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Room Air Conditioning Conditioning Conditioning Conditioning

1. REVERSING VALVE ALTERNATE COMPRESSOR TERMINAL ORIENTATION MAY VARY RED THERMOSTAT BLUE BLACK OR WHITE ANTICIPATOR RESISTOR SMOOTH CONDUCTOR OR BROWN RIBBED CONDUCTOR OR BLUE TO CAPACITOR BRACKET CHASSIS X CLOSED 0 OPEN SWITCH POSITION CIRCUIT OFF 0 LOW COOL MEDIUM COOL HIGH COOL HIGH HEAT MEDIUM HEAT LOW HEAT 4 X e X o 0000000 0 000 FAN ONLY CAPACIT A MEDIUM LEGEND AR ANTICIPATOR RESISTOR MS MONEY SAVER CAP CAPACITOR COMPR COMPRESSOR FAN MOTOR I OVERLOAD PROTECTOR nose REVERSING VALVE INDOOR THERMOSTAT OUTDOOR THERMOSTAT COMPRESSOR WIRE HARNESS OVERLOAD PROTECTOR TO INNERWALL MOTOR MOUNT LEREN OR GREEN YELLOW GROUND LEAD COMBINATION TERMINAL PLASTIC INSULATOR PART NO 619 142 17 TESTING THE ELECTRONIC CONTROL 2001 XQ BOARDS amp QME BOARDS Checking Room Temperature 1 Check the room temperature at the electronic control pad by pressing at the same time the FAN SPEED button and the temperature UP button on XQ models 2 Check the room temperature at the electronic control pad by pressing at the same time the FAN SPEED
2. W Timer Stop Start On Off off to cancel the timer function Once the on and off times have been selected they will remain in memory However if the power is interrupted set the CLOCK TIME again e For complete operating instructions refer to the Operating Guide 68 Friedrich 920 117 00 12 00 QUICK REFERENCE GUIDE XSTAR Room Air Conditioner TO START UNIT Touch the POWER ON OFF button The unit will automatically be in regular COOLING mode with the temperature set at 75 F 24 C and the fan speed at F1 SLEEP On Off TO ADJUST TEMPERATURE COOLER Touch W and hold until the display shows the desired room temperature DISPLAY WARMER Touch A and hold until the display shows the desired room temperature V Exhaust X STAR Super High Efficiency TO ADJUST THE FAN SPEED Touch FAN SPEED until the display shows the desired fan speed F1 is the lowest setting SLEEP SETTING LOW F2 is MED Speed MoneySaver is HIGH and SF is SMART FAN With DISPLAY Fan Only SMART FAN on the fan speed will adjust au A RAM FAN Clock tomatically to maintain the desired comfort SPEED Timer Set On Off Hour Star level Stop Temp Hour Vent Shut TO SET THE CLOCK 56 Touch SET HOUR Clock light On then press W or A until the hour closest to the actual time appears in the display Make sure you set A M and P M properly DISPLA
3. AR and 4 Cool Position between terminals 3 2 12 M S AR and 5 Heat Position between terminals 1 2 4 M S AR and 6 Med Heat Position between terminals 1 2 and 4 M and M S AR and ve LL J umm and 4 LO and M S AR and 8 Fan Only Position between terminals L1 and M Warmer Cooler 7 Lo Cool Position between terminals C and 1 C2 Wait three minutes before restarting 31 Smart Center Electronic Control Center See Figure 26 FILTER ALERT light will come on after 250 hours of use Touch FILTER ALERT to reset TO SET MODE OF OPERATION When unit is first turned on it will be in the COOL mode light on with constant fan Touch MONEYSAVER light on to activate the MoneySaver feature MoneySaver is a feature that cycles the fan with the compressor so that the fan does not run all the time This saves energy and improves dehumidification lf customer prefers a constant fan for more air movement touch MONEYSAVER again and unit will return to constant fan Touch FAN ONLY light on and only the fan will run This feature may be used in conjunction with the FRESH AIR EXHAUST lever to bring outside air into a room or to exhaust stale air Figure 26 ELECTRONIC CONTROL QUIETMASTE
4. 1 Voltmeter 2 Ammeter 3 Ohmmeter 4 E P A Approved Refrigerant Recovery System 5 Vacuum Pump capable of 200 microns or less vacuum 6 Acetylene Welder 7 Electronic Halogen Leak Detector G E Type H 6 or equivalent 8 Accurate refrigerant charge measuring device such as a Balance Scales 1 2 oz accuracy b Charging Board 1 2 oz accuracy 9 High Pressure Gauge 0 400 Ibs 10 Low Pressure Gauge 30 150 Ibs 11 Vacuum Gauge 0 1000 microns EQUIPMENT MUST BE CAPABLE OF 1 Recovery CFC s as low as 5 2 Evacuation from both the high side and low side of the system simultaneously 3 Introducing refrigerant charge into high side of the sys tem 4 Accurately weighing the refrigerant charge actually in troduced into the system 5 Facilities for flowing nitrogen through refrigeration tub ing during all brazing processes 39 HERMETIC COMPONENT REPLACEMENT The following procedure applies when replacing components in the sealed refrigeration circuit or repairing refrigerant leaks Compressor condenser evaporator capillary tube refrigerant leaks etc 1 10 12 40 Recover the refrigerant from the system at the process tube located on the high side of the system by installing aline tap on the process tube Apply gauge from process tube to EPA approved gauges from process tube to EPA approved recovery system Recover CFC s in system to at least 5 Cut the pr
5. 115 45 QSTAR SQ05J10B 5400 115 4 6 507 107 5006108 6200 115 51 564 no 880 115 75 842 25 QSTAR KQo5J10B 5000 115 47 516 97 15 165 fal KQoejiB 6000 115 54 592 101 20 KQossJ0B 8250 115 75 82 98 25 QuietMaster Electronic 55083108 800 115 67 745 tto 20 S809J10B 90 115 72 800 115 17 SS10J10R 10200 115 75 872 117 26 SS12J10AR 1750 115 98 108 110 35 5514108 1400 115 120 1308 107 37 5512308 7 120007200 230 208 5 5 5 7 1143 1091 10 5 11 0 35 8516030 15600 15300 230 208 72 77 1598 1560 9 8 9 8 50 325 15 119 SMi9J30R 3900 19000 230 208 8 9 9 6 1972 1926 9 8 9 9 57 330 M 163 SMi2J30B 2100020500 230 208 10 6 114 2333 2278 9 0 9 0 70 440 154 QuietMaster Deluxe UNE Fe ee ee MEE RS10J10 1000 115 99 110 26 S 115 115 98 1068 no 35 325 S 114 282588 RS14ji0 140 595 120 1357 105 37 400 128 8516030 1560015300 1230 208 7 2 7 7 1598 1560 9 8 9 8 RS19J30 19800 19000
6. between terminals L1 and C V and MS 4 Hi Cool Position between terminals L1 and C H and MS 5 Fan Only Position between terminals L1 and 2 RESISTOR Heat Anticipator SQ Only Failure of the resistor will cause prolonged off and on cycles of the unit When replacing a resistor be sure and use the exact replacement Resistor rating 115 Volts 12500 ohm 1 05 watts 25 Figure 8 ROCKER SWITCH Bi FRONT VIEW BACK VIEW MONEYSAVER SWITCH Rocker Switch See Figure 8 This rocker switch can be depressed to either YES or NO In the YES position you will get the most economical operation Both the fan and the compressor will cycle on and off together maintaining the selected temperature at a more constant level and reducing the humidity more efficiently This control will only operate when the unit is in cooling mode In the NO position the fan will run constantly as long as the unit is in the cooling mode Disconnect leads from switch Depress switch to function being tested 1 When YES is depressed there should be continuity between terminals 1 and 2 2 When NO is depressed there should be continuity between terminals 2 and 3 SYSTEM CONTROL SWITCH KQ Models Only See Figure 9 The KQ Model unit uses a five position control switch to regu late the operation of the unit Function of each position clock wise rotation is as follows System Control P
7. 208 8996 19721926 9 8 9 8 QuietMaster KS10J10 1000 115 9 1 971 103 28 325 5 108 KS12J10 11500 115 105 1150 100 35 325 S 111 KS14J10 14000 115 120 1386 101 37 400 M 128 KS12J30A 12500 12500 230 208 5 8 6 2 1250 1205 __ 10 0 10 0 35 325 s 106 KS18J30B 17600 17300 230 208 82 87 1820 1760 9 7 9 8 55 440 161 KM21J30 20500 20500 230 208 1 03 11 4 2278 2278 9 0 9 0 70 440 154 KL25J30A 25000 2500 j 9 09 0 77 560 1 192 QuietMaster Heavy Dut SL24J30A 24500 24500 230 208 12 3 13 6 2278 2278 230 208 11 9 13 0 2580 2605 9 5 9 4 77 560 192 SL28J30A 28000 27500 230 208 14 0 15 5 3110300 9 089 88 600 L 201 SL33J30 33000 32500 230 208 17 0 18 0 3665 36101 9 0 9 0 11 0 700 1 216 Twintemp HeatPump 1 __ vQosJi0A 6200 530 115 57 620 100 20 140 o 78 Y309J10 900 890 115 72 785 62 65 115 17 5 113 VL24J35A 24000 23800 23000 22800 230 208 12 0 13 0 2665 2645 7 6 8 3 1720 1700 9 0 9 0 70 L 198 TwinTemp Electric Heat EL33J35 33000 33000 17300 14300 230 208 17 0 18 0 3665 3610 24 0 22 4 5500 4650 9 0 9 0 Casement SC06H10D 60 115 67 75 402465
8. KQ05J10A 1 KQ06J10A 1 KQ08J10A 1 YQ06J10A 1 KQ05J10A 3 KQ06J10A 3 BTUH Cooling 5300 6200 7900 6200 E E R Cooling SPECIFICATIONS Volts Amperes Cooling Total Watts Cooling Hertz Fuse Breaker Size Fan RPM Evaporator Air CFM Exhaust Air CFM Dehumidification Pts Hr 1 5 2 0 2 5 2 0 Width 1934 1934 1934 1934 Height 14 14 14 14 Depth Minimum Ext Into Room Minimum Ext to Outside Net Weight 76 76 82 80 Shipping Weight 81 81 87 85 PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL COMP Mais wore d oe Tor AIR DROP F ROTOR AMPS OZ FLUID OZ KQ05J10A 1 56 34 23 66 76 5 265 5 2 29 0 12 0 R 22 9 8 KQ06J10A 3 58 02 21 98 72 5 265 5 8 35 0 13 0 R 22 9 8 260 KQ08J10A 1 51 43 28 57 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity Use Sunisco 4GDID Refrigerant Oil or Atmos 60 PERFORMANCE DATA DISCHARGE 56 1 EVAPORATOR AIR a TEMP F TEMP E CHEN OPERATING SUCTION 72 EER com so amperes Goong 68 we To R 22 CHARGE IN 14 Lu ie E EE INN Minimum Ext To Outside Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with Net Weight 95 F Outside Air Temperature at 40 Relative Humidity PERFORMANCE DATA VOLTS BTUH CFM HEAT RISE EL i HIGH SPEED PERFORMANCE DATA RATINGS LOCKED ROTOR AMPS Hea
9. Mod CI Cl 4 Temperature Fan Smart Center Smart Center ELECTRONIC CONTROL SYSTEM 32 TO ADJUST TEMPERATURE COOLER Touch COOLER to see setting touch again to change WARMER Touch WARMER to see setting touch again to change Touch F C to show desired temperature in Fahrenheit or Celsius TO ADJUST FAN SPEED Touch SPEED to see current setting Touch again to change speed F1 is lowest setting sleep setting F2 is LOW is MED and F4 is HIGH TO ACTIVATE SMART FAN Touch SMART FAN light on Smart Fan will adjust the fan speed automatically to maintain the desired comfort level For example if the outside doors in the home are open for an extended period of time or more people enter a room Smart Fan may adjust to a higher fan speed to compensate for the increased heat load This keeps from having to adjust the fan speed on your own or from having to change the desired temperature you have selected Smart Fan will also run to test temperature if the off cycle is long TO SET HOUR CLOCK Touch SET HOUR CLOCK to see setting To change touch and hold until hour closest to the actual time appears in the display MAKE SURE A M AND P M ARE SET PROPERLY Minutes will NOT show on display TO SET THE TIMER NOTE SET HOUR CLOCK before attempting to set timer functions The TIMER ON OFF times can be set a minimum of one hour apart and maximum of twenty three hours apart STOP TIME To
10. TEST Disconnect leads from control switch See Figure 22 There must be continuity as follows Figure 22 POSITION OFF 1 LL COOL 2 LO COOL 3 MED COOL 4 HICOOL 5 FAN 6 OPEN X CLOSED 30 System Control Switch Figure 23 SYSTEM CONTROL SWITCH See Figure 23 Heat Pump amp Electric Heat Models An eight position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating at low medium or high speed in the cooling or heating mode The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel 1 Off Position everything is off 2 Lo Cool Position fan operates on low speed compressor is on 3 Med Cool Position fan operates on medium speed compressor is on 4 Cool Position fan operates on high speed compressor is on 5 Hi Heat Position fan operates on high speed compressor or electric heater is on 6 Med Heat Position fan operates on medium speed compressor or electric heater is on SYSTEM CONTROL SWITCH See Figure 24 7 Lo Heat Position fan operates on low speed Heat Pump amp Electric Heat Models compressor or electric heater is on An eight position control switch is used to regulate the 8 Fan Only Position operates on medium speed operation of the fan motor and compressor The compressor can be opera
11. button and the WARMER button on QME models The indoor temperature will display for 10 seconds Indoor temperature can be viewed in all modes including the TEST mode The display can be changed back to SET temperature by pressing any key except the ON OFF button or after 10 seconds has elapsed Activating Test Mode Activate test mode by pressing at the same time the MODE button and the temperature DOWN button on XQ models LEDs for Hour Start and Stop will blink 1 bps while Test Mode is active Activate test mode by pressing at the same time the MONEY SAVER button and the FILTER ALERT button on QME models LED for the Filter Alert will blink 1 bps while Test Mode is active Test Mode has duration of 90 minutes Test Mode can be activated under any conditions including Off Test Mode is cancelled by pressing the On Off button unplugging the unit or when the 90 minutes is timed out All settings revert to the factory default settings of Cool 75 degrees F Timer and Set Hour features are nonfunctional Test Mode overrides the three minute lockout all delays for compressor and fan motor start speed change and no delay when switching modes Test Mode default settings are ON Money Saver 60 degrees F and High fan speed Activating Error Code Mode Submode of Test Mode Unit has to be in Test Mode to enter Error 1 Code Mode Activate Error Code Mode by pressing the TIMER ON OFF button on XQ models LED for the TIMER
12. 5 0 5 7 7 7 11 0 3 5 Width 25 15 16 25 15 16 25 15 16 28 28 25 15 16 16 Height 15 15 16 15 15 16 17 15 16 20 3 16 20 3 16 15 15 16 17 15 16 Depth 27 3 8 27 3 8 27 3 8 33 5 8 33 5 8 27 3 8 27 3 8 Minimum Ext Into Room 3 1 16 3 1 16 3 1 16 3 3 16 3 3 16 3 1 16 3 1 16 Minimum Ext to Outside 16 15 16 16 15 16 16 15 16 18 15 16 18 15 16 16 15 16 16 15 16 Net Weight PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL COMP DATA TEMP F PRESSURES RATINGS OIL Cooling DISCHARGE TEMP SUCTION DISCHARGE LOCKED CHARGE IN CHARGE IN AIR DROP F ROTOR AMPS OZ FLUID OZ ES12J33 3 5 7 26 3 26 0 11 8 8 2 EMI8J34A 3 om EM18J34A 3 8 7 42 0 43 0 30 0 EL24J35A 3 13 3 57 0 32 0 18 0 EK12J33A 3 6 2 26 3 24 0 11 8 EK18J34A 2 55 0 25 0 73 0 262 8 2 EK18J34A 3 42 0 42 0 30 0 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity PERFORMANCE DATA VOLTS BTUH CFM HEAT RISE Heating HIGH SPEED ES12J33 3 208 8900 208 8900 EM18J34A 1 208 10600 EL24J35A 3 208 14300 208 14300 EK12J33A 3 208 8900 EK18J34A 3 208 10600 14 SPECIFICATIONS Volts Amperes Total Watts Fuse Breaker Size Evaporator Air CFM Fresh Air CFM Exhaust Air CFM Dehumidification Pts HR Minimum Ext Into Room Minimum Ext to Outside Shipping Weight SS08J10R1 SS08J10A1 8200 1 1 6 7 310 Y Y 2 1110 SS09J10A1 SS10J10R1 SS12J10R1 SS12J3
13. 7th rows of tubes from the Z bottom of the coil at dimension shown Figure 30 Ee Basepan top edge THERMOSTAT BULB LOCATION YQ and SC Models Only Thermostat sensor holder 020 to be positioned between the 4th and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown Z Figure 31 um Basepan top edge i 7 500 gt Ny 500 DEFROST THERMOSTAT Heat Pump Models Only See Figure 32 This thermostat is single pole double throw with contacts between terminals 2 and 3 closing on temperature rise and contacts between terminals 2 and 1 closing on temperature fall When the contacts between terminals 2 and 1 make power is supplied to the heater element This control is dual purpose control that acts as an outdoor thermostat and defrost control When the sensing bulb attached to the condenser coil senses enough icing on the outdoor coil it will interrupt power to the compressor and supply power to the heating element until the coil temperature reaches above 43 then the heater will shut off and the unit will resume operating in the reverse cycle mode When the outdoor coil temperature drops below 20 the unit will operate in electric heat mode continuously until the outdoor coil temperature rises above 43 The fan motor will not turn off when defrost occurs and the 4 way valve will not reve
14. CONTROL SWITCH SC Model Only Figure 14 1 Disconnect leads control switch 2 Check continuity between all switch positions shown in Figure 14 SYSTEM CONTROL SWITCH WS Models See Figure 15 A five position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating at low medium or high speed The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel SYSTEM CONTROL SWITCH TEST Disconnect leads from control switch See Figure 16 There must be continuity as follows 1 Position no continuity between terminals 2 Lo Cool Position between terminals L1 and C LO and MS 3 Med Cool Position between terminals L1 and C V and MS 4 Hi Cool Position between terminals L1 and C H and MS 5 Fan Only Position between terminals L1 and 2 28 System Control Panel WS Models WaliMaster Figure 15 EXHAUST ili CLOSED WARMER COOLER Figure 16 System Control Switch WS Models SYSTEM CONTROL SWITCH WE amp WY Models See Figure 17 An eight position switch is used to regulate the operation of the fan motor compressor and electric heater The unit can be operated in cooling or heating mode with the compressor or electric heater on and the fan motor operating on low medium or h
15. FOR MODELS RS10J101 RS10J103 RS12J101 RS12J103 RS15J301 RM18J30 RM15J101 RM18J302 RM18J303 COMPRESSOR C 5 R ORIENTATION MAY VARY DEPENDING UPON MANUFACTURER ALTERNATE COMPRESSOR PROTECTOR COMPRESSOR WIRE HARNESS ANTICIPATOR RESISTOR CAPACITOR TO CAPACITOR BRACKET WIRE COLOR NOTE FOR ANTICIPATOR RESISTOR WIRING DIAGRAM SYSTEM SWITCH SWITCH ROCKER THERMOSTAT SMOOTH CONDUCTOR MOTOR WIRE HARNESS TO CAPACITOR MULTI BRACKET PIN CONNECTOR TO INNER WALL MOTOR MOUNT 115V 60 HZ WHITE 230 208V BLACK 220 240 BLACK OPEN SWITCH LOGIC CLOSED M 8 ow COOL Fi 5 5 MED COC A 51 a ES e of e EA ON 15 Pop ofo e Ei LEGEND ANTICIPATOR RESISTOR MONEYSAVER ROCKER SWITCH CAPACITOR COMPRESSOR FAN MOTOR D OVERLOAD PROTECTOR SYSTEM SWITCH INDOOR THERMOSTAT gt GROUND LEAD COMBINATION TERMINAL PLASTIC INSULATOR PART NO REV 618 200 17 00 Wiring Diagram for Models SQ05J10A 1 SQ06J10A 1 5007 10 1 SQ08J10B 1 WIRING DIAGRAM COMPRESSOR SWITCH SYSTEM HARNESS COMPR MOLDED ANTICIPATOR RESISTOR SMOOTH CONDUCTOR SUPPLY CORD THERMOSTAT CAPACITOR TO CAPACITOR BRACKET TO INNERWALL MOTOR MOUNT 5 b 3 a z o o e ul tn m ra SWITCH LOGIC eee LE
16. ON OFF will flash 1 bps while Error Code Mode is active Pressing the TEMP HR button will display 00 Consecutive presses will scroll through all error codes logged Press the TEMP HR button to see the reverse order of all error codes logged When the end of logged error codes is reached the temperature set point will appear Activate Error Code Mode by pressing at the same time the A C START button and the ON OFF button on QME models LED for the TIMER ON OFF will flash 1 bps while Error Code Mode is active Pressing the WARMER button will display 00 Consecutive presses will scroll through all error codes logged Press the COOLER button to see the reverse order of all error codes logged When the end of logged error codes is reached the temperature set point will appear IMPORTANT Error Codes are cleared from the log by exiting from Error Code Mode To exit on XQ models press Timer On Off button To exit QME models press A C Start and On Off buttons Or unplug unit to exit Error Code Mode Plug unit in after 5 seconds to resume normal operation of unit Friedrich 920 044 01 11 2000 QUICK REFERENCE GUIDE QuietMaster Electronic Room Air Conditioner TO START UNIT Touch the ON OFF button The unit will automatically be in regular COOLING mode with the temperature set at 75 F 24 C and the fan speed at F1 SLEEP NOTE Should the FILTER ALERT light flash when you first turn the unit on touch
17. Remove overload 2 Allow time for overload to reset before attempting to test 3 Apply ohmmeter probes to terminals on overload wires There should be continuity through the overload TERMINAL OVERLOAD Internal Some model compressors are equipped with an internal overload The overload is embedded in the motor windings to sense the winding temperature and or current draw The overload is connected in series with the common motor terminal Should the internal temperature and or current draw become excessive the contacts in the overload will open turning off the compressor The overload will automatically reset but may require several hours before the heat is dissipated 24 CHECKING THE INTERNAL OVERLOAD See Figure 4 Figure 4 Internal Overload LINE BREAK INTERNAL OVERLOAD OHMMETER With no power to unit remove the leads from the com pressor terminals 2 Using an ohmmeter test continuity between terminals C S and C R If not continuous the compressor over load is open and the compressor must be replaced FAN MOTOR Asingle phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan A self resetting overload is located inside the motor to protect against high temperature and high amperage conditions See Figure 5 Figure 5 Fan Motor FAN MOTOR TEST 1 Determine that capacitor is serviceable 2 Disconnect fan motor wires from fan speed switch or system s
18. TO CORRECT Loss of charge in thermostat bulb Place jumper across thermostat terminals to check Thermostat does not if unit operates If unit operates replace thermostat turn unit on Check as above Loose or broken parts in thermostat Refer to appropriate wiring diagram PROBLEM POSSIBLE CAUSE TO CORRECT Poorly installed unit Refer to Installation Instructions for proper installation Fan blade striking chassis Reposition adjust motor mount mpr r vibrating Noisy operation ompressor vibrating Check that compressor grommets have not deteriorated Check that compressor mounting parts are not missing mproperly mounted or loose cabine heck assembly and parts for looseness rubbing parts and rattling PROBLEM POSSIBLE CAUSE TO CORRECT Evaporator drain pan overflowing Clean obstructed drain trough Condensation forming on base pan Water leaks into room replace Poor installation resulting in rain Check Installation Instructions Reseal as required Dirty evaporator coil clean Very high humidity PROBLEM POSSIBLE CAUSE TO CORRECT Thermostat differential too narrow Replace thermostat Plenum gasket not sealing allowing Check gasket Reposition or replace Thermostat short discharge air to short cycle thermostat filter Tubular insulation missing from top of Replace tubular insulation on bulb thermostat bulb Applicable models Thermostat bulb touching thermostat Adjust bulb bra
19. and must be replaced Figure 2 Typical Ground Test OHMMETER ROTARY COMPRESSOR TOP VIEW CHECKING COMPRESSOR EFFICIENCY The reason for compressor inefficiency is normally due to broken or damaged suction and or discharge valves reducing the ability of the compressor to pump refrigerant gas This condition can be checked as follows 1 Install a piercing valve on the suction and discharge or liquid process tube 2 Attach gauges to the high and low sides of the system 3 Start the system and run a cooling or heating performance test If test shows A Below normal high side pressure B Above normal low side pressure C Low temperature difference across coil The compressor valves are faulty replace the compressor THERMAL OVERLOAD External Some compressors are equipped with an external overload which is located in the compressor terminal box adjacent to the compressor body See Figure 3 23 The overload is wired in series with the common motor terminal The overload senses both major amperage and compressor temperature High motor temperature or amperage heats the disc causing it to open and break the circuit to the common motor terminal Figure 3 External Overload OVERLOAD Heat generated within the compressor shell is usually due to 1 High amperage 2 Lowrefrigerant charge 3 Frequentrecycling 4 Dirty condenser TERMINAL OVERLOAD TEST Compressor External Type 1
20. cut out temperature The heat anticipator is energized in the heating mode regardless of whether fan is placed in the automatic MoneySaver or constant run position RANGE Cooling Model Thermostat 60 F 2 to 92 F 4 TEST Cooling Heating Models Remove wires from thermostat and check continuity between terminal 2 common and 3 for cooling Check between terminals 2 common and 1 for heating Also check that contacts in thermostat open after placing in either position NOTE Temperature must be within range listed to check thermostat Refer to the troubleshooting section in this manual for additional information on thermostat testing THERMOSTAT ADJUSTMENT No attempt should be made to adjust thermostat Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the calibration it is suggested that the thermostat be replaced rather than calibrated Thermostat bulb must be straight to insure proper performance THERMOSTAT BULB LOCATION The position of the bulb is important in order for the thermostat to function properly The bulb of the thermostat should be located approximately 45 to a maximum of 60 from horizontal Also do not allow the thermostat bulb to touch the evaporator coil See Figures 30 and 31 THERMOSTAT BULB LOCATION SQ Models Only Thermostat sensor holder 020 and anticipator 4712D 140 to be positioned between the 4th and 5th and 6th and
21. leak recharge system Pressure differential too high Pilot valve okay Dirt in one bleeder hole Recheck system Deenergize solenoid raise head pressure reenergize solenoid to break dirt loose If unsuccessful remove valve wash out Check on air before installing If no movement replace valve add strainer to discharge tube mount valve horizontally Piston cup leak Clogged pilot tubes Stop unit After pressures equalize restart with solenoid energized If valve shifts reattempt with compressor running If still no shift replace valve Raise head pressure operate solenoid to free If still no shift replace valve Both ports of pilot open Back seat port did not close Raise head pressure operate solenoid to free partially clogged port If still no shift replace valve Defective Compressor Not enough pressure differential at start of stroke or not enough flow to maintain pressure differential Check unit for correct operating pressures and charge Raise head pressure If no shift use valve with smaller port Body damage Replace valve Both ports of pilot open Raise head pressure operate solenoid If no shift replace valve Body damage Replace valve Valve hung up at mid stroke Pumping volume of compressor not sufficient to maintain reversal Raise head pressure operate solenoid If no shift use valve with smaller ports Both ports of pilot op
22. mer seme umm Dum Dt AIR DROP F ROTOR AMPS OUNCES FLUID OZ WS07A10D 2 67 30 WS09A10D 2 oo 40 2 2 2 2 2 82 95 3 308 38 Bd E WE EUN Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity 6 7 4 5 4 9 5 7 6 3 6 3 6 8 17 SPECIFICATIONS weosasso wEizassD wEisAssD wvosasap wvizasse BTUH Cooling 9000 11500 12500 9000 11300 P NE NM Heating 11000 11000 11000 8200 10800 9 0 8 7 Volts 230 6 3 6 8 Heating al Watts i O O N 230 230 230 208 208 208 R R Amperes Heating 16 0 16 0 16 0 14 7 14 7 14 7 980 1255 1415 980 2950 2950 2950 840 Fuse Breaker Size 20 Amps Resistance Watts Heater BTUH N o N o N NI o N T oz N IS o alo N C AJN 3 27 27 27 16 3 4 16 3 4 16 3 4 16 3 4 16 3 4 16 3 4 16 3 4 16 3 4 27 16 3 4 16 3 4 7 1 2 9 16 7 1 2 7 1 2 9 16 9 16 Net Weight 84 hipping Weight 103 107 lt R R 116 i DISCHARGE TEMP SUCTION DISCHARGE LOCKED CHARGE IN CHARGE IN AIR DROP F ROTOR AMPS OUNCES FLUID OZ K K 0 PEN 0 3 11 8 Ra Rating Conditio
23. undersized Check heat rise across coil Refer to perfor mance data sheet on heat rise at various outdoor ambients If heat rise is satisfactory check if insulation can be added to attic or walls PROBLEM POSSIBLE CAUSE TO CORRECT Incorrect wiring Refer to applicable wiring Defective solenoid coil Check for continuity of coil Reversing valve fails to shift Block condenser coil and switch unit to cooling Allow pressure to build up in system then switch to heating If valve fails to shift replace valve Inoperative system switch Check for continuity of system switch POSSIBLE CAUSE TO CORRECT Outdoor thermostat does not cut off Defective thermostat replace Unit cools when heat is called for compressor at the preselected tempera ture and bring on the heating element Unit does not heat adequately Fresh air or exhaust door open Check if operating properly Instruct customer on proper use of control Clean as recommended in Manual Refer to performance data sheet on heat rise at various outdoor ambients If heat rise is satisfactory check if insulation can be added to attic or walls PROBLEM POSSIBLE CAUSE TO CORRECT Refer to applicable wiring diagram Unit cools when Defective solenoid coil Check for continuity of coil heat is called for Block condenser coil and switch unit to cooling Allow pressure to build up in the system then switch to heating If valve fails t
24. unit Restart unit several times after allowing pressures to stabilize Pinch off process tubes cut and solder the ends Remove pinch off tool and leak check the process tube ends SPECIAL PROCEDURE IN THE CASE OF COMPRESSOR MOTOR BURNOUT 1 Recover all refrigerant and oil from the system 2 Remove compressor capillary tube and filter drier from the system 3 Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent to remove all contamination from system Inspect suction and discharge line for carbon deposits Remove and clean if necessary 4 Reassemble the system including new drier strainer and capillary tube 5 Proceed with processing as outlined under hermetic component replacement ROTARY COMPRESSOR SPECIAL TROUBLESHOOTING AND SERVICE Basically troubleshooting and servicing rotary compressors is the same as on the reciprocating compressor with only a few exceptions 1 Because of the spinning motion of the rotary the mounts are critical If vibration is present check the mounts carefully 2 electrical terminals on the rotary are in a different order than the reciprocating compressors The terminal markings are on the cover gasket Use your wiring diagram to insure correct connections REFRIGERANT CHARGING NOTE BECAUSE THE RAC SYSTEM IS A SEALED SYSTEM SERVICE PROCESS TUBES WILL HAVE TO BE INSTALLED FIRST INSTALL A LINE TAP AND REMOVE REFRIGERANT FROM SYSTEM M
25. 0 Suction Head PSIG 70 F Inside 62 F Outside 66 315 61 325 70 F Inside 57 F Outside 59 290 70 F Inside 52 F Outside 53 275 70 Inside 47 F Outside 49 255 70 F Inside 42 F Outside 45 240 70 F Inside 37 F Outside 41 220 70 F Inside 35 F Outside Heating Element comes on at 35 F outside ambient and compressor shuts off AHAM Rating Conditions 20 Refrigeration System Sequence of Operation A good understanding of the basic operation of the refrigeration system is essential for the service technician Without this understanding accurate troubleshooting of refrigeration system problems will be more difficult and time consuming if not in some cases entirely impossible The refrigeration system uses four basic principles laws in its operation they are as follows 1 always flows from a warmer body to a cooler body 2 Heat must be added to or removed from a substance before a change in state can occur 3 Flow is always from a higher pressure area to a lower pressure area 4 The temperature at which a liquid or gas changes state is dependent upon the pressure The refrigeration cycle begins at the compressor Starting the compressor creates a low pressure in the suction line which draws refrigerant gas vapor into the compressor The compressor then compresses this refrigerant raising its pressure and its heat intensity Temperature The refrigerant leaves the compres
26. 0 ao km1sgaoa2 KMiBJSOAS 550 240 730 262 40 40 199 KM21J304 seo 240 750 260 5 sso 460 seo KL25J30AT KL25J30A3 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity 269 288 293 280 262 260 SPECIFICATIONS ns104J101 RS10J103 RS12J101 RS12J103 154301 15 101 RM18J302 RM18J303 BTUH 15 000 18 500 18 500 10 000 10 000 12 000 12 000 15 000 14 500 18 300 18 300 10 0 10 0 Volts 115 115 115 115 230 115 230 230 208 208 208 208 Amperes 8 3 8 3 10 2 10 2 6 9 12 0 8 4 8 4 7 5 9 0 9 0 Total Watts 910 910 1145 1145 1565 1380 1850 1850 1565 1380 1830 1830 Fuse Breaker Size Evaporator Air CFM 300 300 3 400 45 Yes 2 6 es Exhaust Air CFM Yes 2 6 EYE ves Ye De Dehumidification Pts HR 3 5 25 15 16 25 15 16 25 15 16 15 15 16 15 15 16 15 15 16 15 15 16 15 15 16 17 15 16 17 15 16 17 15 16 27 3 8 27 3 8 27 3 8 27 3 8 27 3 8 27 3 8 27 3 8 27 3 8 Minimum Ext Into Room 3 1 16 3 1 16 3 1 16 3 1 16 3 1 16 3 1 16 3 1 16 3 1 16 Minimum Ext to Outside 16 15 16 16 15 16 116 15 16 16 15 16 16 15 16 116 15 16 16 15 16 16 15 16 PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL COMP DATA TEMP F PRESSURES RATINGS OIL Cooling DISCHARGE TEMP SUCTION DISCHARGE LOCKED CHARGE IN CHARGE IN AIR DROP F ROT
27. 0 250 WSC 121 Installation Information Sleeve Dimensions Depth Depth Minimum Minimum Thru the wall with Hoodto Extension Extension Window Width Finished Hole Sleeve Height Width Front Louvers Into Room Outside Minimum Maximum Height Width 4 4 S M 1715 16 25 15 16 27 3 8 8 3 4 3 1 16 16 15 16 27 7 8 2 18 3 8 26 3 16 L 20 3 16 28 33 5 8 16 1 2 3 3 16 18 15 16 29 7 8 2 20 3 8 28 1 4 SC 1013 16 14 11 16 27 9 7 8 2 1 2 15 1 2 14 3 4 17 7 8 11 1 8 14 15 16 WSC 16 3 4 27 7 1 2 9 16 17 1 4 27 1 4 Maximum Height Unit Performance Sheets SPECIFICATIONS 5400 11 0 115 6300 10 8 115 5 2 585 4 4 4 90 15 15 1115 160 Yes i 5 19 76 1 14 219 5 Shipping Weight Lbs 8 10 PERFORMANCE DATA Cooling SQ05J10A 1 SQ06J10A 1 Q07J10A 1 SQ08J10AB 1 EVAPORATOR AIR TEMP F PRESSURES DISCHARGE TEMP AIR DROP F OPERATING 51 45 50 41 29 59 29 50 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity Use Sunisco 4GDID Refrigerant Oil or Atmos 60 50 50 Q05J10A 1 SQO6J10A 1 SQO7J10A 1 5008 10 1 8000 8000 0 S 7100 10 3 115 1 5 5 0 5 15 1115 140 Yes Ye 5 19 19 9 2 7 1 6 2 21 ss 5 7 84 ELECTRICAL RATINGS REFRIG OIL ROTOR AMPS Oz FLUID OZ oe 34 0 10
28. 00465 87 20 140 56 70 Sleeve dimensions are listed on the following page These heat pumps have supplemental electric should operated below 37F D As an EneRGY Star partner Friedrich Air Conditioning co has determined that the selected ENERGY Star M models meet the ENERGY STAR A requirements for energy efficiency WallMaster Thru the wall Specifications Room Moisture Side Energy Removal n AE Cooling Heating Efficiency Pints Hr Circulation Capacity Capacity Volts Cooling Cooling Heating Heating Ratio CFM BTU Hr BTU H Rated Amps Watts Amps Watts EE WS07A10D 7000 115 6 7 735 8 5 1 4 260 93 WS09A10D 9000 115 9 0 980 9 2 2 0 260 WSC 103 WS12A10D 11500 115 11 5 1280 9 0 290 WSC 112 WS09A30D 9000 8800 230 208 4 5 4 9 980 980 9 2 9 0 2 1 260 WSC 101 WS12A30D 11500 11300 230 208 5 7 6 3 1280 1255 9 0 9 0 2 9 290 WSC 109 WS13A30D 12500 12300 230 208 6 3 6 8 1435 1415 8 7 8 7 4 0 250 WSC 119 WY09A33D 9000 8800 8200 8200 230 208 4 5 4 8 1000 980 4 1 4 2 870 840 9 0 9 0 2 1 270 WSC 107 WY12A33E 11300 10900 10800 10500 230 208 5 8 6 2 1315 1280 5 4 5 7 1200 1165 8 6 8 5 2 9 290 WSC 116 WE09A33D 9000 8800 11000 9100 230 208 4 5 4 9 980 980 16 0 14 7 3550 2950 9 2 9 0 2 1 260 WSC 103 WE12A33D 11500 11300 11000 9100 230 208 5 7 6 3 1280 1255 16 0 14 7 3550 2950 9 0 9 0 2 9 290 WSC 111 WE13A33D 12500 12300 11000 9100 230 208 6 3 6 8 1435 1415 16 0 14 7 3550 2950 8 7 8 7 4
29. 0A1 SS10J10A1 SS12J10A1 SS12J30A SS12J10A3 9200 10200 12000 12000 12000 11 55 1 10 5 5 800 870 1145 1145 1090 1110 1095 1120 1110 0 300 o om ms as Ye 5 Ye 3 Ye Ye 0 8 15 7 45 15 es es 0 EVAPORATOR AIR DATA OPERATING ELECTRICAL COMP TEMP F PRESSURES RATINGS OIL SS08J10R1 SS08J10A 1 61 4 18 6 86 5 262 6 7 33 0 11 8 SS09J10A 1 Cooling DISCHARGE TEMP SUCTION DISCHARGE LOCKED CHARGE IN CHARGE IN AIR DROP F ROTOR AMPS FLUID OZ APAPA SS10J10A 1 57 22 22 78 77 5 266 0 1 GP SS12J10A 1 57 22 22 78 77 5 266 10 2 54 0 11 SS12J10A 3 SS12J30A 1 SS12J30A 3 OZ 24 4 25 0 8 8 22 8 77 0 260 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity 15 SM14J10B1 SS15J30A1 SM18J30A2 SM21J30A4 SL24J30A3 SL28J30A SL33J302 SPECIFICATIONS SM18J30A3 SL24J30A1 BTUH 14000 15000 18200 21000 24000 28000 33000 15000 18000 20500 24000 27500 32500 Total Watts 1565 1850 2333 2610 3110 3670 1555 1830 2278 2640 3090 3640 60 60 60 60 60 60 o Size 15 15 20 20 DICIT RUNE 1110 1120 1100 1100 325 425 560 600 Yes Yes Yes Yes Yes Yes Yes Yes 5 0 5 7 77 8 8 25 15 16 25 15 16 25 15 16 25 15 16 28 17 15 16 15 15 16 17 15 16 17 15 16 20 3 16 20 3 16 20 3 16 27 3 8 27 3 8 27 3 8 27 3 8 33 5 8 33 5 8 33 5 8 Minimum Ext Into
30. 17200 23000 22800 70 F Inside 35 F Outside 10700 8900 13000 10600 17300 14300 Evaporator Air Temperature Rise 70 F Inside 47 F Outside 31 38 24 74 31 71 70 F Inside 35 F Outside 28 69 23 87 24 46 20 22 24 38 20 16 AMPS 70 F Inside 47 F Outside 6 7 6 0 6 5 8 5 9 0 10 4 11 5 70 F Inside 35 F Outside 16 0 14 7 19 5 17 0 24 0 22 4 Watts 70 F Inside 47 F Outside 760 1340 1300 1880 1820 2350 2340 70 F Inside 35 F Outside 3500 2900 5500 4650 5500 4650 Suction Head PSIG 70 F Inside 47 F Outside 53 5 222 52 5 251 53 225 54 236 5 Do not operate below 37 ambient Heating element comes on at 35 F outside ambient and compressor shuts off 13 SPECIFICATIONS ES12J33 1 ES15J33A 1 EM18J34A 2 EL24J35A 1 EL33J35 2 EK12J33A 1 EK18J34A 2 ES12J33 3 EM18J34A 3 EL24J35A 2 EK12J33A 3 EK18J34A 3 BTUH Cooling 12000 15000 18500 24000 33000 12500 18000 12000 15000 18300 24000 32500 12500 18000 BTUH Heating 10700 10700 13000 17300 17300 10700 13000 8900 8900 10600 14300 14300 8900 10600 10 9 5 9 6 E E R Cooling E E R Heating Volts Amperes Cooling Amperes Heating 1 7 Total Watts Cooling 2610 1090 1655 1830 2640 3610 1250 1875 Hertz 60 60 60 60 60 60 60 Fuse Breaker Size 20 20 30 30 30 20 30 Fan RPM 1120 1100 1120 1100 1100 1080 1120 Evaporator Air CFM 325 330 425 560 700 325 440 Fresh Air CFM Yes Yes Yes Yes Yes Yes Exhaust Air CFM Yes Yes Yes Yes Yes Yes Dehumidification Pts Hr 3 5
31. ACKET OR BLUE 220 240V 50HZ BLACK MOTOR MOUNT SCHEMATIC RIBBED CONDUCTOR SWITCH LOGIC ea LEGEND AR ANTICIPATOR RESISTOR SWITCH POSITION CIRCUIT MS MONEY SAVER ROCKER SWITCH CAP CAPACITOR ORP COMPR COMPRESSOR GROUND LEAD lor ooo MTR MOTOR e COMBINATION TERMINAL OVLD OVERLOAD PROTECTOR PLASTIC INSULATOR x o o x o SYS SW SYSTEM SWITCH IDT INDOOR THERMOSTAT PART NO FAN ONLY Jolxjololo 618 200 00 WIRING DIAGRAM FOR MODELS ES12J33 ES15J33A EM18J34A EL24J35 EL33J35 EK12J33A EK18J34A 2 amp EK18J34A 3 WIRING DIAGRAM LLI 3 RED SYSTEM SWITCH ALTERNATE COMPRESSOR C S R ORIENTATION VARY DEPENDING UPON MANUFACTURER COMPRESSOR WIRE HARNESS OVERLOAD PROTECTOR PURPLE 6 WAY MULTI PIN CONNECTOR MOTOR WIRE ANTICIPATOR HARNESS RESISTOR 3 ir Li MOTOR MOUNT TO CAPACITOR TO CAPACITOR BRACKET CAPACITOR BRACKET CHASSIS MEDIUM PEN WITCH POSITION CIRCUIT ANTICIPATOR RESISTOR HEATER MONEY SAVER ROCKER SWITCH HEATER LIMIT THERMAL MOTOR GROUND LEAD OVERLOAD PROTECTOR COMBINATION TERMINAL SYSTEM SWITCH PLASTIC INSULATOR INDOOR THERMOSTAT PART NO REV 618 200 01 MEDIUM COOL HIGH COOL HIGH HEAT ojo MEDIUM HEAT Jo x LOW HEAT olo F
32. AKE NECESSARY SEALED SYSTEM REPAIRS AND VACUUM SYSTEM CRIMP PROCESS TUBE LINE AND SOLDER END SHUT DO NOT LEAVE A SERVICE VALVE IN THE SEALED SYSTEM Proper refrigerant charge is essential to proper unit operation Operating a unit with an improper refrigerant charge will result in reduced performance capacity and or efficiency Accordingly the use of proper charging methods during servicing will insure that the unit is functioning as designed and that its compressor will not be damaged Too much refrigerant overcharge in the system is just as bad if not worse than not enough refrigerant undercharge They both can be the source of certain compressor failures if they remain uncorrected for any period of time Quite often other problems such as low air refrigerant charge problems The refrigerant circuit diagnosis chart will assist you in properly diagnosing these systems An overcharged unit will at times return liquid refrigerant slugging back to the suction side of the compressor eventually causing a mechanical failure within the compressor This mechanical failure can manifest itself as valve failure bearing failure and or other mechanical failure The specific type of failure will be influenced by the amount of liquid being returned and the length of time the slugging continues Not enough refrigerant Undercharge on the other hand will cause the temperature of the suction gas to increase to the point where it does no
33. AN ONLY x of 02885858568 WIRING DIAGRAM FOR MODELS YS13J33 YM18J34A amp YL24J35A WIRING DIAGRAM REVERSING VALVE ALTERNATE COMPRESSOR COMPRESSOR OVERLOAD C 5 R ORIENTATION PROTECTOR MAY VARY DEPENDING UPON MANUFACTURER COMPRESSOR WIRE HARNESS DEFROST MN BAK _ ______ X BLUE ____ LORANGE PURPLE BLUE 6 MULTI PIN CONNECTOR MOTOR WIRE ANTICIPATOR HARNESS RESISTOR SMOOTH CONDUCTOR SUPPLY CORD 3 z jag z MOTOR MOUNT TO CAPACITOR TO CAPACITOR BRACKET CAPACITOR HEATER BRAGKET 77 TO CHASSIS MEDIUM SWITCH LOGIC LEGEND POSITION AR ANTICIPATOR RESISTOR HEATER ST M MONEY SAVER HEATER LIMIT FE CAPACITOR THERMAL FUSE COMPR COMPRESSOR okopo MTR FAN MOTOR GROUND LEAD IO Dx SJEL 2174 21 COMBINATION TERMINAL OVERLOAD 64 x Ter es RV REVERSING VALVE PLASTIC INSULATOR aa Ko DX OLX IDT INDOOR THERMOSTAT PART NO REM ra fas ODT OUTDOOR THERMOSTAT 618 200 02 aag OO 88 PKPPP MEDIUM HEAT LOW HEAT FISSE a as a alle aZ WIRING DIAGRAM FOR MODEL YS09J10A SUPPLY CORD DI SWITCH LOGIC THERMOSTAT WIRING DIAGRAM DEFROST
34. ERS ANSI AHAM RAC i 1992 The consumer through the AHAM Room Air Conditioner Certification Program can be certain that the AHAM Certification Seal accurately states the unit s cooling and heating capacity rating the amperes and the energy efficiency ratio COMPONENTS OPERATION amp TESTING WARNING DISCONNECT ELECTRICAL POWER TO UNIT BEFORE SERVICING OR TESTING COMPRESSORS Compressors are single phase 115 or 230 208 volt depending on the model unit All compressor motors are permanent split capacitor type using only a running capacitor across the start and run terminal All compressors are internally spring mounted and externally mounted on rubber isolators WINDING TEST Remove compressor terminal box cover and disconnect wires from terminals Using an ohmmeter check continuity across the following See Figure 1 1 Terminal C and S no continuity open winding replace compressor 2 Terminal C and R no continuity open winding replace compressor 3 Terminal R and S no continuity open winding replace compressor Compressor Winding Test Figure 1 OHMMETER ROTARY COMPRESSOR TOP VIEW GROUND TEST Use an ohmmeter set on its highest scale Touch one lead to the compressor body clean point of contact as a good con nection is a must and the other probe in turn to each com pressor terminal see Figure 2 If a reading is obtained the compressor is grounded
35. GEND ANTICIPATOR RESISTOR MONEY SAVER ROCKER SWITCH CAPACITOR COMPRESSOR GROUND LEAD FAN MOTOR COMBINATION TERMINAL OVERLOAD PROTECTOR e PLASTIC INSULATOR SYSTEM SWITCH INDOOR THERMOSTAT PART NO REV 617 581 09 01 WIRING DIAGRAM FOR MODELS KQ05J10A 1 KQ05J10A 3 KQ06J10A 1 KQ06J10A 3 KQ08J10A 1 COMPRESSOR NOTE WIRING AT THE RUN AND START TERMINALS IS OPPOSITE OF THE WIRING USED WITH TECHMSEH OR COPELAND COMPRESSORS RED RIBBED CONDUCTOR MOTOR TO GROUND SUPPLY CORD SYSTEM SWITCH SEQUENCE ____ ____ ALLOPEN SCHEMATIC HI FAN L1 H LO FAN L1 L LOW COOL 11 1 11 COOL L1 H L1 9 SYSTEM SWITCH D wm T STAT BLACK 2 FAN MOTOR CAPACITOR at BROWN F c H 5 7 b 3 COMPRESSOR 23617 581 04 R RIBBED CONNECTOR 617 581 04 WIRING DIAGRAM FOR MODEL YQO6J10A 1 COMPRESSOR CAUTION FOLLOW WIRING DIAGRAM EXACTLY WHEN WIRING THE COMPRESSOA THE RUN AND START TERM POSITIONS VARY FROM CONVENTIONAL PRACTICE SOLENOID BLACK CAPACITOR THERMOSTAT TO GROUND SCREW IR SUPPLY CORD 9 COMBINATION TERMINAL SCHEMATIC SYSTEM 3 THERMOSTAT 0 4 COMPRESSOR Ora 2 SOLENOIDS C OVLD H HO RUN CAPACITOR SYSTEM SWITCH SEQUENCE OFF ALL OPEN TO 1 CLOSE HI COOL C TO 1 C TO 3 CLOSE LO COOL C TO 2 C
36. Hoorn Air Conditioning SERVICE Manual Table of Contents Typical Unit Components Refrigerant Charging Introduction Undercharged Refrigerant Systems Unit Identification Overcharged Refrigerant Systems Unit Specifications Restricted Refrigerant System Unit Performance Routine Maintenance Refrigeration Sequence of Operation Troubleshooting Electrical Rating Tables Wiring Diagrams Compressor RS 618 200 17 Thermal Overload External 617 581 09 Thermal Overload Internal 617 581 04 Fan Motor 617 581 05 System Switches Controls 614 406 00 Thermostats Indoor SS SM 618 200 03 Thermostats Defrost SL 618 200 00 Resistor Heat Anticipator KS KM KL 618 200 00 Capacitor Run ES EM EL EK 618 200 01 Check Valve YS13 YL 618 200 02 Heat Pump Reversing Valve YS09 619 142 17 Solenoid Coil Heat Pump Models Testing XQ and QME Boards Valve Drain Pan Quick Reference Guide QuietMaster Heating Element Quick Reference Guide XStar Sealed Refrigeration Repairs Typical Unit Components Compressor Capillary Tube Reversing Valve N if so equipped Liquid Filter Driers Condenser Coil Front Cover 5 Discharge Air LU Nae Outdoor Grille System Switches Evaporator Coil N Sleeve Return Air Grille Filter Blower Whee Blower Motor Condenser Fan Blade INTRODUCTION This service manual is designed to be used in conjunction wit
37. M POSSIBLE CAUSE TO CORRECT Defective motor Check and replace Fan motor does nor Open or shorted capacitor Replace capacitor and check operate in Constant heck if drain pan valve is open If not replace or UM oose connections heck all connections Check voltage to fan motor position PROBLEM POSSIBLE CAUSE TO CORRECT Heating capillary tube partially restricted Check for partially starved outer coil Replace Check valve leaking internally heating capillary tube Switch unit several times from heating to cooling Check temperature rise across coil Refer to specifi cation sheet for correct temperature rise Reversing valve failing to shift Deenergize solenoid coil raise head pressure completely bypassing hot gas energize solenoid to break loose If valve fails to make complete shift replace valve Cooling adequate heating insufficient 53 PROBLEM POSSIBLE CAUSE TO CORRECT Compressor will not Outdoor thermostat Refer to the heating data on applicable models for turn off and operate on Applicable models the preselected temperature the compressor shuts heating element only off and the electric element is energized during low outside ambients PROBLEM POSSIBLE CAUSE TO CORRECT Fuse link Check fuse link for continuity If defective replace Compressor shuts off Check amperage draw of element If no amperage on outdoor thermostat Heating element shorted replace Defect
38. ODELS SL24J30A 1 SL24J30A 3 SL28J30A 1 amp SL33J30 2 WIRING DIAGRAM COMPRESSOR C S R ORIENTATION MAY VARY DEPENDING UPON MANUFACTURER RED BLACK ALTERNATE COMPRESSOR OVERLOAD PROTECTOR COMPRESSOR WIRE HARNESS ORANGE ROCKER SWITCH SEE WIRE COLOR NOTE ANTICIPATOR RESISTOR CAPACITOR SMOOTH CONDUCTOR OR BROWN SUPPLY CORD TO CAPACITOR BRACKET 6 WAY MULTI WIRE COLOR NOTE FOR PIN CONNECTOR ANTICIPATOR RESISTOR 115V 60HZ WHITE 230 208 60HZ BLACK TO INNERWALL 220 240V 50HZ BLACK MOTOR MOUNT SCHEMATIC RIBBED CONDUCTOR OR BLUE SWITCH LOGIC X LEGEND AR ANTICIPATOR RESISTOR SWITCH POSITION CIRCUIT MS MONEY SAVER ROCKER SWITCH CAP CAPACITOR 1 COMPR COMPRESSOR GROUND LEAD MTR FAN MOTOR COMBINATION TERMINAL OVLD OVERLOAD PROTECTOR PLASTIC INSULATOR SYS SW SYSTEM SWITCH coor IDT INDOOR THERMOSTAT PART NO REV FAN ONLY Jolxjololo 618 200 00 Wiring Diagram for KS KM amp KL Models WIRING DIAGRAM C S R ORIENTATION MAY VARY DEPENDING UPON MANUFACTURER ALTERNATE COMPRESSOR OVERLOAD PROTECTOR COMPRESSOR WIRE HARNESS w 2 lt x e 6 WAY MULTI WIRE COLOR NOTE FOR PIN CONNECTOR ANTICIPATOR RESISTOR 115V 60HZ WHITE 230 208 60HZ BLACK TO INNERWALL SEE WIRE COLOR NOTE ANTICIPATOR RESISTOR CAPACITOR SUPPLY CORD SMOOTH CONDUCTOR OR BROWN TO CAPACITOR BR
39. OR AMPS 02 FLUID OZ RS10J10 1 RS10J10 3 RS12J10 RS12J10 3 102 RS15J301 RM18J302 RM18J303 RM15J10 1 56 35 23 65 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity Shipping Weight 11 SPECIFICATIONS YS09J10 1 Hertz ing 7 2 6 7 60 Fuse Breaker Size Resistance Heater Width 1110 300 Yes 1 7 2515 16 1515 16 273 8 Minimum Ext Into Room 31 16 Minimum Ext to Outside 1615 16 Net Weight 113 YS13J33 1 13000 13000 325 Yes 3 5 2515 16 1515 16 273 8 31 16 1615 16 117 128 YM18J34A 2 17500 17500 16500 16300 9 4 9 4 9 6 9 6 230 208 8 3 9 1 7 6 8 3 1860 1860 60 30 19 5 17 0 4200 3500 13000 10600 1120 425 Yes 52 2515 16 1715 16 273 8 31 16 1615 16 166 153 YL24J35A 1 24000 23800 203 16 335 8 33 16 1815 16 198 217 Shipping Weight 124 PERFORMANCE DATA TEMP F EVAPORATOR AIR OPERATING ELECTRICAL PRESSURES RATINGS Cooling DISCHARGE TEMP SUCTION DISCHARGE LOCKED CHARGE IN CHARGE IN AIR DROP F ROTOR AMPS OZ FLUID OZ 272 3 0 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity 12 PERFORMANCE DATA YS09J10 1 YS13J33 1 YM18J34A 2 YL24J35A 1 Heating 70 F Inside 47 F Outside 8300 12400 12300 17200
40. RMOSTAT SQ amp KQ Models See Figure 27 Thermostat is used to cycle the compressor on and off at the comfort level desired The thermostat has a range from 60 2 F to 90 4 F with a differential of 5 F Turning the knob clockwise lowers the indoor room temperature setting while turning the knob counter clockwise raises the indoor temperature TEST Remove wires turn thermostat to its coldest position Check for continuity between the two terminals Turn thermostat to warmest position check continuity to see if contacts open NOTE Temperature must be in range listed to check thermostat Figure 27 THERMOSTAT YQ Model Only See Figure 28 This thermostat is single pole double throw cross ambient with a range of 60 to 92 F and a differential of 2 F Terminal 2 is common Figure 28 THERMOSTAT YQ Models Only TEST 1 Remove leads from thermostat 2 Turn thermostat knob clockwise to its coldest position 3 Test for continuity between the two terminals Contacts should be closed gt Turn thermostat knob counterclockwise to its warmest position 5 Test for continuity contacts should be open NOTE The thermostat must be within the temperature range listed to open and close Figure 29 THERMOSTAT SC Model Only To maintain the comfort level desired a cross ambient type thermostat is used The thermostat has a range from 65 2 F to 87 3 F The thermostat bulb is p
41. Room 3 1 16 3 1 16 3 1 16 3 3 16 3 3 16 3 3 16 3 3 16 Minimum Ext to Outside 16 15 16 16 15 16 16 15 16 16 15 16 18 15 16 18 15 16 18 15 16 LI Weight PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL COMP DATA TEMP F PRESSURES RATINGS Cooling DISCHARGE TEMP SUCTION DISCHARGE LOCKED 2 AIR DROP F ROTOR AMPS FLUID OZ SM14J10B1 56 34 23 66 40 0 SM18J30A2 54 56 25 44 74 0 SM18J30A3 SL24J30A1 54 86 25 14 73 5 SM24J30A3 5125430 1 6232 27 68 Rating Conditions 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity 16 SPECIFICATIONS wsozatoo wsosaro ws12a10D_ WSOSAGOD WSt2A30D WS13A30D BTUH 7000 9000 9000 11500 12500 9 0 87 S a Volts 230 230 230 Amperes 6 7 5 7 6 3 od pae er EE 980 1415 Hetz 60 60 60 60 60 Fuse Breaker Size 15 15 15 15 15 15 145 0 1275 1140 1275 1275 vaporator 20 2 260 20 250 resh Air CFM POE Yes 5 TI D c 3 Q o o 5 79 o I 16 3 16 3 16 3 16 3 4 16 3 4 16 34 785 5 4 83 93 w n 100 109 no 2 3 g 3 m 5 2 3 3 3 m o o c 4 2 o hipping Weight EVAPORATOR AIR OPERATING ELECTRICAL COMP
42. T button on QME models LED for the Filter Alert will blink 1 bps while Test Mode is active Test Mode has duration of 90 minutes Test Mode can be activated under any conditions including Off Test Mode is cancelled by pressing the On Off button unplugging the unit or when the 90 minutes is timed out All settings revert to the factory default settings of Cool 75 degrees F Timer and Set Hour features are nonfunctional Test Mode overrides the three minute lockout all delays for compressor and fan motor start speed change and no delay when switching modes Test Mode default settings are ON Money Saver 60 degrees F and High fan speed Activating Error Code Mode Submode of Test Mode Unit has to be in Test Mode to enter Error Code Mode 1 Activate Error Code Mode by pressing the TIMER ON OFF button on XQ models LED for the TIMER ON OFF will flash 1 bps while Error Code Mode is active Pressing the TEMP HR button will display 00 Consecutive presses will scroll through all error codes logged Press the TEMP HR button to see the reverse order of all error codes logged When the end of logged error codes is reached the temperature set point will appear Activate Error Code Mode by pressing at the same time the A C START button and the ON OFF button on QME models LED for the TIMER ON OFF will flash 1 bps while Error Code Mode is active Pressing the WARMER button will display 00 Consecutive presses will scr
43. TO 3 CLOSE LO HEAT C TO 2 C TO 4 CLOSE HI HEAT TO 1 C TO 4 CLOSE SWITCH DEFROST CONTROL T STAT LINE 617 581 05 WIRING DIAGRAM FOR MODEL SCO6H10D BLUE CAPACITOR WHITE FAN MOTOR COMPRESSOR SYSTEM SWITCH SEQUENCE CLOSED CONTACTS ALL L1 1 L1 2 L1 1 OPEN Li C Li c FAN MOTOR 63 RUN CAPACITOR BLACK CAUTION FOLLOW WIRING DIAGRAM EXACTLY WHEN WIRING THE COMPRESSOR THE RUN AND START TERMINAL POSITIONS VARY FROM CONVENTIONAL PRACTICE SUPPLY Cone TO GROUND SCREW SYSTEM SWITCH SYSTEM SEITCH THERMOSTAT OVERLOAD COMPRESSOR LINE 614 406 00 WIRING DIAGRAM FOR MODELS SS08J10A 1 SS08J10R 1 SS09J10A 1 SS10J10A 1 SS10J10R 1 SS12J10A 1 SS12J30A 1 SS12J30A 3 SS12J10R 3 SS12J10R 2 SS15J30A 1 SM14J10B 1 SM18J30A 2 SM18J30A 3 amp SM21J30A 4 COMPRESSOR TATION C S R ORIEN VARY DEPENDING UPON MANUFACTURER RELAY RELAY OVERLOAD PROTECTOR COMPRESSOR SUPPLY CORD WIRE HARNESS MOTOR WIRE HARNESS TO CAPACITOR 6 WAY MULTI BRACKET u ha CONNECTOR TO INNERWALL TD CHASSIS MOTOR MOUNT NEUTRAL 115 V SCHEMATIC L2 208 230 L1 COMPR HERM ELECTRONIC CONTROL CAP LEGEND CAP CAPACITOR COMPR COMPRESSOR e COMBINATION TERMINAL T FAN MOTOR o li GROUND LEAD OVLD OVERLOAD PROTECTOR PART NO REV 618 200 03 WIRING DIAGRAM FOR M
44. Y Minutes will NOT show on the display lll m Start Hour p Stop PM A TO SET THE TIMER START TIME After the clock time has been set press SET HOUR START light on then press and Wuntil the hour you want the unit to come on appears in the display STOP TIME After the start time has been set press SET HOUR STOP light on then press A and W until the hour you want the unit to shut off appears in the display DISPLAY Touch TIMER ON light on to activate the timer function Touch TIMER OFF light off to cancel the timer function Once the on and off times have been selected they will remain 7 On Off H Stop memory However if the power is interrupted set the CLOCK TIME again e For complete operating instructions refer to the Operating Guide 69 70 FRIEDRICH AIR CONDITIONING CO e Post Office Box 1540 e San Antonio Texas 78295 1540 e 4200 N Pan Am Expressway e San Antonio Texas 78218 5212 210 357 4400 FAX 210 357 4480 Visit us on the Internet at www friedrich com Printed in the U S A RACServMn 01 02
45. anel KQ Models Only Figure 9 26 1 Off Turns everything off 2 Hi Fan Maximum circulation of filtered room air no cooling 3 Low Fan Fan runs slower for less circulation of filtered room air 4 Low Cool Fan runs slowly for quiet operation when maximum cooling is not needed 5 Hi Cool Highest fan speed for maximum cool ing System Control Switch KQ Models Only Figure 10 SYSTEM CONTROL SWITCH TEST See Figure 19 Turn knob to phase of switch to be tested There must be continuity as follows 1 Hi Fan Position between terminals L1 and H 2 Low Fan Position between terminals L1 and L 3 Low Cool Position between terminals L1 and L and 4 Hi Cool Position between terminals L1 and H and GM SYSTEM CONTROL SWITCH YQ Model Only See Figure 11 System Control Switch YQ Models Only Figure 12 The YQ Model unit uses a six position control switch to regulate the operation of the unit see Figure 9 Function of each position Clockwise rotation is as follows Figure 11 SYSTEM CONTROL PANEL YQ Model Only 5 Hi Heat Position between terminals C and 1 and NO and 4 ROTARY SYSTEM SWITCH SC Model See Figure 13 1 Off Turns everything off rotary four position switch is used to turn on the unit and 2 Fan Only To circulate filtered room air but no cooling select the operat
46. ches 161 6 F or a short circuit occurs in the heating element Once the fuse link separates a new fuse link must be installed NOTE Always replace with the exact replacement The heater element has a high limit control This control is a bimetal thermostat mounted in the top of the heating element Figure 39 HEATING ELEMENT Should the fan motor fail or filter become clogged the high limit control will open and interrupt power to the heater before reaching an unsafe temperature condition The control is designed to open at 110 F 6 F Test continuity below 110 F and for open above 110 F The heating element for the Y model is energized by an outdoor thermostat The outdoor thermostat is adjusted at a predetermined temperature to bring on the heating element and turn off the compressor The room thermostat will then control the cycling of the element when the selected indoor temperature is reached Testing of the elements can be made with an ohmmeter across the terminals after the connecting wires have been removed A cold resistance reading of approximately 14 5 ohms for the 3 3 KW heater 11 9 ohms for the 4 0 KW heater and 9 15 ohms for the 5 2 KW heater should be registered SEALED REFRIGERATION SYSTEM REPAIRS IMPORTANT ANY SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRES THE INSTALLATION OF A SUCTION LINE DRIER IN THE SUCTION LINE BETWEEN THE EVAPORATOR AND THE REVERSING VALVE EQUIPMENT REQUIRED
47. cket bulb support bracket Applicable models PROBLEM POSSIBLE CAUSE Refer to appropriate wiring diagram Anticipator resistor wire disconnected at thermostat or system switch Disconnect plug from outlet Remove resistor from Anticipator resister shorted or open bracket Insert plug and depress Cool and Fan Applicable models Auto MoneySaver buttons Place thermostat to warmest setting Feel resistor for temperature If no heat replace resistor Replace thermostat Prolonged off cycles automatic operation Partial loss of charge in thermostat bulb causing a wide differential PROBLEM POSSIBLE CAUSE TO CORRECT Switches from Thermostat sticking Change room thermostat cooling to heating Incorrect wiring Refer to appropriate wiring diagram 48 PROBLEM POSSIBLE CAUSE TO CORRECT Evaporator drain pan cracked or Repair clean or replace as required obstructed Outside water leaks Water in compressor area Detach shroud from pan and coil Clean and remove old sealer Reseal reinstall and check Obstructed condenser coil Fan blade and slinger ring improperly Adjust fan blade to 1 2 clearance from condenser positioned coil PROBLEM POSSIBLE CAUSE TO CORRECT Insufficient air circulation in air condi Adjust louvers for best possible air circulation High indoor Oversized unit Operate in Fan Auto MoneySaver position humidity Inadequa
48. cooling to heating block the air flow through the outdoor coil and allow the discharge pressure to build in the system Then switch the system from heating to cooling If the valve is stuck in the heating position block the air flow through the indoor coil and allow discharge pressure to build in the system Then switch the system from heating to cooling Should the valve fail to shift in either position after increasing the discharge pressure replace the valve NOTE When brazing a reversing valve into the system it is of extreme importance that the temperature of the valve does not exceed 250 F at any time Wrap the reversing valve with a large rag saturated with water Re wet the rag and thoroughly cool the valve after each brazing operation of the four joints involved The wet rag around the reversing valve will eliminate conduction of heat to the valve body when brazing the line connection 38 SOLENOID COIL Heat Pump Models Only See Figure 37 The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle Should the reversing valve fail to shift during the heating cycle test the solenoid coil TO TEST 1 Disconnect power to unit 2 Disconnect coil leads 3 Attach probes of an ohmmeter to each coil lead and check for continuity NOTE Do not start unit with solenoid coil removed from valve or do not re
49. d to the pilot valve body The center pilot tube is the common pilot tube and is connected to the center suction line The outside tubes are connected to each end of the main valve body The pilot valve consists of a needle valve and spring When the solenoid is de energized the spring tension closes one pilot port while the other remains open When the solenoid is energized the opposite end is closed The piston in the main valve is pressure operated and will always travel in the direction of the open pilot tube port which provides a path to the center tube Pressure which will increase in the opposite side of the valve will escape through a bleed port located in each piston When de energized the valve will be in the cooling position 37 REVERSING VALVE Figure 37 TESTING REVERSING VALVE Occasionally the reversing valve may stick in the heating or cooling position or in the mid position When stuck in the mid position part of the discharge gas from the compressor is directed back to the suction side resulting in excessively high suction pressure Check the operation of the valve by starting the system and switching the operation from Cooling to Heating and then back to Cooling Do not hammer on valve If valve fails to change its position test the voltage to the valve coil while the system is in the heating cycle If voltage to coil is satisfactory replace reversing valve Should the valve fail to shift from
50. ed coil Check temperature split continually across coil Check for oil at silver soldered connections Check for partially iced coil Check split across coil Check Does not cycle off for low running amperage remain closed PROBLEM POSSIBLE CAUSE TO CORRECT Thermostat contacts stuck Replace thermostat Thermostat does not Thermostat set at coldest point Turn to higher temperature setting to see if the unit turn unit off cycles off Incorrect wiring Refer to appropriate wiring diagram Unit undersized for area to be cooled Refer to Sizing Chart PROBLEM POSSIBLE CAUSE TO CORRECT Overload inoperative Opens too soon Check operation of unit Replace overload if system operation is satisfactory Compressor attempts to start before Allow a minimum of two 2 minutes for pressures system pressures are equalized to equalize before attempting to restart Instruct customer of waiting period Low or fluctuating voltage Check voltage with unit operating Check for other Compressor attempts appliances on circuit Air conditioner should be on to start or runs for separate circuit for proper voltage and be fused short periods only separatel Cycles on overload Refer to appropriate wiring diagram correct rating Check for proper fan speed or blocked condenser condenser coil Check for kinked discharge line or restricted Compressor running abnormally hot condenser Check amperage PROBLEM POSSIBLE CAUSE
51. en Piston needle on end of slide leaking Raise head pressure operate solenoid If no shift repl lve Operate valve several times then recheck If excessive leak replace valve Pilot needle and piston needle leaking Pressure differential too high Clogged pilot tube Operate valve several times then recheck If excessive leak replace valve top unit Will reverse during equalization period Recheck system Raise head pressure operate solenoid to free dirt If still no shift replace valve Dirt in bleeder hole Raise head pressure operate solenoid Remove valve and wash out Check on air before reinstalling if no movement replace valve Add strainer to discharge tube Mount valve horizontally Piston cup leak Defective pilot Stop unit After pressures equalize restart with solenoid deenergized If valve shifts reattempt with compressor running If it still will not reverse while running replace the valve Replace valve Defective compressor air before reinstalling or replace valve Add strainer and filter drier to discharge tube between valve and compressor 45 TROUBLESHOOTING COOLING PROBLEM POSSIBLE CAUSE TO CORRECT Compressor does not run PROBLEM Low voltage Check for voltage at compressor 115 volt and 230 volt units will operate at 10 voltage variance Thermostat not set cold enough or inoperative Set thermostat t
52. er Slugged with Refrigerant Restricted Refrigerant System A quick check for either condition begins at the evaporator With a partial restriction there may be gurgling sounds at the metering device entrance to the evaporator The evaporator in a partial restriction could be partially frosted or have an ice ball close to the entrance of the metering device Frost may continue on the suction line back to the compressor Often a partial restriction of any type can be found by feel as there is a temperature difference from one side of the restriction to the other With a complete restriction there will be no sound at the metering device entrance An amperage check of the compressor with a partial restriction may show normal current when compared to the unit specification With a complete restriction the current drawn may be considerably less than normal as the compressor is running in a deep vacuum no load Much of the area of the condenser will be relatively cool since most or all of the liquid refrigerant will be stored there The following conditions are based primarily on a system in the cooling mode Indoor Coil Troubleshooting a restricted refrigerant system can be difficult The following procedures are the more common problems and solutions to these problems There are two types of refrigerant restrictions Partial restrictions and complete restrictions A partial restriction allows some of the refrigerant to ci
53. er Fan Operates pitted or burned heating element does High limit control open Check continuity if open replace not come on Open thermal fuse Check continuity Check reason for failure Open or shorted element Check voltage across heater terminals Check amperage draw of heater Tighten all terminals PROBLEM POSSIBLE CAUSE TO CORRECT Restricted filter Clean as recommended in Owner s Manual Cycling high limit control Control is set to open at 155 F 5 F and close at Heating inadequate 130 F 8 F If cycling prematurely replace control Check position of fresh air door control slide Adjust Exhaust or fresh air door open cable if door does not close properly PROBLEM POSSIBLE CAUSE TO CORRECT Fan relay contacts open Check continuity of fan relay NOTE Some models Fan operates in Con have the fan relay energized during the heating stant position but not in cycle while others do not Automatic Money noperative system switch Check continuity between terminals L2 and 3 of Saver the system switch Check connections on system switch and fan relay PROBLEM POSSIBLE CAUSE TO CORRECT Heat anticipator resistor shorted Disconnect power to unit Remove resistor from thermostat bulb block Plug in unit and allow to Long off and on operate Feel resistor for heat If no heat is felt cycles replace resistor Defective thermostat Replace thermostat and check operation PROBLE
54. essure vapor The refrigerant then returns to the compressor where the cycle is repeated J aN Discharge Line Condenser Coil Compressor Liquid Line Electrical Rating Tables Circuit Rating Breaker or T D Fuse ALL KQ SQ and XQ MODELS KS10J10 KS12J10A KM14J10 RS10J10 RS12J10A RM14J10 SS08J10R SS09J10B SS10J10R SS12J10AR SM14J10R SCO6H10D YQ06J10A YS09J10 WS07A10D WS09A10D WS12A10D KS12J30A KM18J30B RS16J30 RM19J30 5512 30 SS16J30 SM19J30R WS09A30D WS12A30D WS13A30D KM21J30 KL25J30A SM21J30B SL24J30A SL28J30A ES12J33 EK12J33A ES16J33 YS13J33 WE09A33D WE12A33D WE13A33D WY09A33D WY12A33E SL33J30 EM19J34 EK18J34B EL24J35A EL33J35 YM18J34A YL24J35A Plug Face NEMA Appearance Facing Blades 125V 15A 250V 15A 250V 20A 250V 30A Optional 30 Amp Kit 618 869 00 is recommended in 208 Volt power supply areas that fall below 208 Volts For more information call the Friedrich Service Department Due to a program of continuing improvement specifications are subject to change without notice Wire Size Use ONLY wiring size recommended for single outlet branch circuit Fuse Circuit Breaker Use ONLY type and size fuse or HACR circuit breaker indicated on unit s rating plate Proper current protection to the unit is the responsibility of the owner Grounding Unit MUST be grounded from branch circuit through se
55. fan operating at low medium or high speed The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel SYSTEM CONTROL SWITCH TEST See Figure 20 Disconnect leads from control switch There must be continuity as follows 1 Off Position no continuity between terminals Lo Cool Position between terminals L1 and C LO and MS Med Cool Position between terminals L1 and MS Hi Cool Position between terminals L1 and C H and MS Fan Only Position between terminals L1 2 Figure 19 System Control Panel Used by all Small Medium and Large chassis units KS SS KM SM KL SL 0 0 MASTER e De Warmer Cooler Wait three minutes before restarting Figure 20 System Control Switch 29 SYSTEM CONTROL SWITCH See Figure 21 A six position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating at low medium or high speed The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel Figure 21 System Control Panel Used on Deluxe Series RS amp RM QU IET MAS T E DELUXE gt Slee V Setting Cool BE or Warmer Cooler Wait three minutes before restarting SYSTEM CONTROL SWITCH
56. gure 35 CAPACITOR HOOK UP FAN MOTOR COMPRESSOR r RED DOT RUN CAPACITOR 3 For dual rated apply an ohmmeter lead to common C terminal and the other probe to the compressor HERM terminal A satisfactory capacitor will cause a deflection on the pointer then gradually move back to infinity 4 Reverse the leads of the probe and momentarily touch the capacitor terminals The deflection of the pointer should be two times that of the first check if the capacitor is good 5 Repeat steps 3 and 4 to check fan motor capacitor NOTE A shorted capacitor will indicate a low resistance and the pointer will move to the 0 end of the scale and remain there as long as the probes are connected An open capacitor will show no movement of the pointer when placed across the terminals of the capacitor CHECK VALVE See Figure 36 A unique two way check valve is used on the reverse cycle heat pumps It is pressure operated and used to direct the flow of refrigerant through a single filter drier and to the proper capillary tube during either the heating or cooling cycle Figure36 ONE WAY CHECK VALVE Heat Pump Models NOTE The slide check inside the valve is made of teflon Should it become necessary to replace the check valve place a wet cloth around the valve to prevent overheating during the brazing operation CHECK VALVE OPERATION In the cooling mode of operation high pressure liquid enters the check va
57. h the installation manuals provided with each air conditioning system component This service manual was written to assist the professional RAC service technician to quickly and accurately diagnose and repair malfunctions This manual will deal with subjects in a general nature i e All text will not pertain to all models IMPORTANT It will be necessary for you to accurately identify the unit you are servicing so you can be certain of a proper diagnosis and repair See Unit Identification The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required in installation and repair and who is equipped with the proper tools and test instruments Installation or repairs made by unqualified persons can result in hazards subjecting the unqualified person making such repairs to the risk of injury or electrical shock which can be serious or even fatal not only to them but also to persons being served by the equipment If you install or perform service on equipment you must assume responsibility for any bodily injury or property damage which may result to you or others Friedrich Air Conditioning Company will not be responsible for any injury or property damage arising from improper installation service and or service procedures UNIT IDENTIFICATION Model Number Code 1st Digit Function S Straight Cool Value Series C Straight Cool Budget Ser
58. ies Y Heat Pump E Electric Heat K Straight Cool Challenger Series W Thru the Wall WallMaster Series 2nd Digit C Casement P PowerMiser Portable Q Q Star M Medium Chassis L Large Chassis W Built In H HazardGard 3rd and 4th Digit Approximate BTU HR Cooling Heating BTU Hr capacity listed in the Specification Performance Data Section Serial Number Decade Manufactured L 0 C 3 F 6 A 1 D 4 G 7 B 2 E 5 H 8 Year Manufactured A 1 D 4 G 7 B 2 E 5 H 8 C 3 F 6 J 9 Month Manufactured A Jan D Apr G Jul B Feb E May H Aug C Mar F Jun J Sep K Oct L Nov M Dec 5006 10 A 8th Digit Engineering Major change 7th Digit Options 0 Straight Cool amp Heat Pump Models 1 1 KW Heat Strip Normal 3 KW Heat Strip Normal 4 4 KW Heat Strip Normal 5 5 KW Heat Strip Normal 8 8 KW Heat Strip Normal eth Digit Voltage 1 115 Volts 2 230 Volts 3 230 208 Volts 5th Digit Alphabetical Modifier 00001 Production Run Number PRODUCT LINE S RAC P PTAC E EAC V VPAK H Split Room Air Conditioner Specifications ENERGY STAR Compliant Cooling Heating Capacity Capacity Volts Cooling Cooling Heating Heating BTU Hr BTU H Rated Amps Watts Amps Watts XSTAR xQ05J10 540 115 46 507 107 xQ06J10 60 115 51 564 no xQ07J10 70 115 65 103 xaoso eso
59. igh speed The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel System Control Panel WE amp WY Models WallMaster EXHAUST cn CLOSED Figure 17 COOLER WARMER SYSTEM CONTROL SWITCH TEST See Figure 18 Disconnect leads from control switch Turn control to position being tested There must be continuity as follows 1 Off Position no continuity between terminals 2 Lo Cool Position between terminals C and 3 C2 and 21 LO and M S AR and 3 Med Cool Position between terminals and 3 Co and pan M and M S AR and 4 Cool Position between terminals 3 C2 2 H and M S AR and 5 Heat Position between terminals 1 C2 4 M S AR and 6 Med Heat Position between terminals 1 Go and 4 M and M S AR and 7 Lo Cool Position between terminals 1 2 4 LO and M S AR and 8 Fan Only Position between terminals L1 and Figure 18 System Control Switch amp WY Models Heat Pump amp Electric Heat Models SYSTEM CONTROL SWITCH KS SS KM SM KL SL Models See Figure 19 A five position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the
60. ill operate Replace probe NOTE All Error Code displays for Frost amp Indoor Probe will allow unit to operate Unit may or will ice up if faulty components not replaced FROST PROBE SENSOR disables compressor at 35 degrees F INDOOR PROBE SENSOR Control range is 60 degrees F to 90 degrees F 2 degrees F Indoor temperature will be displayed by pressing QME Units The Fan Speed button and the Warmer button XQ Units The Fan Speed button and the Temp Up button The indoor temperature will be displayed for 10 seconds The display will change back to the Set Point temperature by pressing any key button except for the On Off button The indoor temperature can be viewed in all modes including test mode Filter Alert The Filter Alert indicator turns on after the fan motor has been operating for 250 hours The Filter Alert indicator is reset by pressing the Filter Alert button one time only Power failures will not reset the 250 hour timer All time elapsed is stored in memory and resumes counting after power is restored Keep Alive The electronic control has a memory to retain all functions and status as set up by the user in the event of a power failure Once power is restored to the unit there is a two second delay before the fan comes on and approximately three minutes delay before the compressor is activated 33 providing that the mode was set for cooling and the set point temperature has not been met in the room THE
61. ing the evaporator coil In the case of the capillary tube this is accomplished by design through size and length of device and the pressure difference present across the device Since the evaporator coil is under a lower pressure due to the suction created by the compressor than the liquid line the liquid refrigerant leaves the metering device entering the evaporatorcoil As it enters the evaporator coil the larger area and lower pressure allows the refrigerant to expand and lower its temperature heat intensity This expansion is often referred to as boiling Since the unit s blower is moving Indoor air across the finned surface of the evaporator coil the expanding refrigerant absorbs some of that heat This results in a lowering of the indoor air temperature hence the cooling effect The expansion and absorbing of heat cause the liquid refrigerant to evaporate i e change to a gas Once the refrigerant has been evaporated changed to a gas it is heated even further by the air that continues to flow across the evaporator coil The particular system design determines at exactly what point in the evaporator the change of state i e liquid to a gas takes place In all cases however the refrigerant must be totally evaporated changed to a gas before leaving the evaporator coil The low pressure Suction created by the compressor causes the refrigerant to leave the evaporator through the suction line as a cool low pr
62. ion desired Switch selection is as follows or heating 3 Hi Cool Fan runs continuously compressor goes on Figure 13 SYSTEM CONTROL PANEL and off to maintain the selected room temperature SC Model Only 4 Lo Cool Fan runs continuously compressor goes on and off to maintain the selected room temperature 5 Lo Heat Fan Runs continuously heating turns on and off to maintain the selected room temperature 6 Hi Heat Fan Runs continuously heating turns on and off to maintain the selected room temperature SYSTEM CONTROL SWITCH TEST See Figure 12 Turn knob to phase of switch to be tested There must be continuity as follows 1 Cool Turns on the compressor and fan at high speed 1 Fan Only Position between terminals C and 1 2 Hi Cool Position between terminals C and 1 2 Lo Cool Turns on the compressor and fan at low and 3 speed 3 Lo Cool Position between terminals C and 2 and So FOR Only Tums ORA C and 3 4 Off Turns everything off P The switching arrangement of the control is as follows See 4 Lo Heat Position between terminals C and 2 and Figure 14 4 1 Off All contacts open 2 HiFan Contacts closed between terminals L1 and 1 27 3 Hi Cool Contacts closed between terminals L1 to 1 and L1 and C 4 Lo Cool Contacts are closed between terminals L1 to 2 and L1 to C SYSTEM
63. ive coil Test coil for continuity Troubleshooting Chart Cooling REFRIGERANT SYSTEM DIAGNOSIS COOLING High Suction Pressure Low Head Pressure High Head Pressure Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions Low Air Flow Across High Air Flow Across Refrigerant System Low Air Flow Across Indoor Coil Indoor Coil Restriction Outdoor Coil Refrigerant System Reversing Valve not Reversing Valve not Overcharged Restriction Fully Seated Fully Seated Undercharged Overcharged Undercharged Noncondensables air in System Defective Compressor Defective Compressor 54 Troubleshooting Chart Heating REFRIGERANT SYSTEM DIAGNOSIS HEATING High Suction Pressure Low Head Pressure High Head Pressure Low Airflow la a Too Refrigerant System Outdoor Ambient Too High Across Outdoor Coil for Operation in Heating Restriction For Operation In Heating Refrigerant System Reversing Valve not Reversing Valve not Low Airflow Across Restriction Fully Seated Fully Seated Indoor Coil Undercharged Overcharged Undercharged Overcharged Defective Compressor Defective Compressor Md air in Electrical Troubleshooting Chart HEAT PUMP HEAT PUMP SYSTEM COOLS WHEN HEATING IS DESIRED Is Line Voltage Is the Selector Switch Present at the Solenoid Set for Heat Is the Solenoid Coil Good Replace the Solenoid Coil YES Reversing Valve Stuck Replace the Reversing Valve 55 WIRING DIAGRAM
64. leaning coils Cover all electrical components to protect them from water or spray Allow the unit to dry thoroughly before reinstalling it in the sleeve NOTE Do not use a caustic coil cleaning agent on coils or base pan Use a biodegradable cleaning agent and degreaser Inspect the indoor blower housing evaporator blade condenser fan blade and condenser shroud periodically yearly or bi yearly and clean of all debris lint dirt mold fungus etc Clean the blower housing area and blower wheel with an antibacterial antifungal cleaner Use a biodegradable cleaning agent and degreaser on condenser fan and condenser shroud Use warm or cold water when rinsing these items Allow all items to dry thoroughly before reinstalling them Periodically at least yearly or bi yearly inspect all control components both electrical and mechanical as well as the power supply Use proper testing instruments voltmeter ohmmeter ammeter wattmeter etc to perform electrical tests Use an air conditioning or refrigeration thermometer to check room outdoor and coil operating temperatures Use a sling psychrometer to measure wet bulb temperatures indoors and outdoors Inspect the surrounding area inside and outside to ensure that the units clearances have not been compromised or altered Inspect the sleeve and drain system periodically at least yearly or bi yearly and clean of all obstructions and debris Clean both areas with an antibacterial and a
65. lve forcing the slide to close the opposite port liquid line to the indoor coil Refer to refrigerant flow chart This directs the refrigerant through the filter drier and cooling capillary tube to the indoor coil In the heating mode of operation high pressure refrigerant enters the check valve from the opposite direction closing the port liquid line to the outdoor coil The flow path of the refrigerant is then through the filter drier and heating capillary to the outdoor coil Failure of the slide in the check valve to seat properly in either mode of operation will cause flooding of the cooling coil This is due to the refrigerant bypassing the heating or cooling capillary tube and entering the liquid line HEAT PUMPS REVERSING VALVE See Figure 37 A reversing valve is used to change the refrigerant flow within the system to permit heating or cooling The reversing valve consists of a main valve body which houses the slide and piston plus a pilot valve which is activated by a solenoid There are three tubes connected to one side of the main valve body and one tube on the opposite side The single tube is connected to the compressor discharge line The center tube on the opposite side is the common suction line to the compressor The outside tubes are connected to the indoor and outdoor coils The pivot valve is responsible for directing the refrigerant flow to the indoor or outdoor coil There are three small tubes connecte
66. move coil after unit is in operation This will cause the coil to burn out VALVE DRAIN PAN See Figure 38 During the cooling mode of operation condensate which collects in the drain pan is picked up by the condenser fan blade and sprayed onto the condenser coil This assists in cooling the refrigerant plus evaporating the water During the heating mode of operation it is necessary that water be removed to prevent it from freezing during cold outside temperatures This could cause the condenser fan blade to freeze in the accumulated water and prevent it from turning To provide a means of draining this water a bellows type drain valve is installed over a drain opening in the base pan This valve is temperature sensitive and will open when the outside temperature reaches 40 F The valve will close gradually as the temperature rises above 40 F to fully close at 60 F BELLOWS ASSEMBLY DRAIN PAN VALVE Figure 38 HEATING ELEMENT See Figure 39 All heat pumps and electric heat models are equipped with a heating element with the exception of the YS09J10 The YS ES and EK12 models are equipped with a 3 3 KW element The YM EM and EK18 models are equipped with a 4 0 KW element The YL and EL models are equipped with a 5 2 KW element The heating element contains a fuse link and a heater limit switch The fuse link is in series with the power supply and will open and interrupt the power when the temperature rea
67. ns 80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity PERFORMANCE VOLTS BTUH CFM HEAT RISE DATA Heating HIGH SPEED WE09A33D 230 11000 260 39 0 208 9100 WE12A33D 230 11000 290 35 0 208 9100 WE13A33D 230 11000 250 40 0 208 9100 19 PERFORMANCE DATA WY09A33D WY12A33E Heating BTUH 70 F Inside 62 F Outside 70 F Inside 57 F Outside 930 70 F Inside 52 F Outside 70 Inside 47 F Outside 10800 10400 70 F Inside 42 F Outside 10000 70 F Inside 37 F Outside 9000 70 F Inside 35 F Outside 11000 9100 Evaporator Air Temperature Rise 70 F Inside 62 F Outside 37 60 70 F Inside 57 F Outside 30 75 70 F Inside 52 F Outside 2910020 Q70 F Inside 47 F Outside 27 10 26 80 32 70 31 50 70 F Inside 42 F Outside 2540 70 F Inside 37 F Outside 2250 27 30 70 F Inside 35 F Outside 33 30 27 60 70 F Inside 62 F Outside 40 70 F Inside 57 F Outside 70 Inside 52 Outside 70 F Inside 47 F Outside 70 F Inside 42 F Outside 70 F Inside 37 F Outside 34 70 F Inside 35 F Outside 16 0 14 7 16 0 14 7 Watts 70 F Inside 62 F Outside 70 F Inside 57 F Outside 70 F Inside 52 F Outside 800 760 70 Inside 47 F Outside 835 810 1175 1155 70 F Inside 42 F Outside 70 F Inside 37 F Outside 760050 1070 70 Inside 35 Outside 3550 2950 3550 295
68. ntifungal cleaner Rinse both items thoroughly with water and ensure that the drain outlets are operating correctly Check the sealant around the sleeve and reseal areas as needed Clean the front cover when needed Use a mild detergent Wash and rinse with warm water Allow it to dry thoroughly before reinstalling it in the chassis NORMAL FUNCTION OF VALVE VALVE OPERATING CONDITION Normal Cooling Normal Heating MALFUNCTION OF VALVE Valve will not shift from cool to heat Valve will not shift from cool to heat Starts to shift but does not complete reversal Apparent leap in heating Will not shift from heat to cool Valve operated satisfactorily PRIOR to compressor motor burnout caused by dirt and small greasy particles inside the valve TO CORRECT Remove valve thoroughly wash it out Check on TROUBLESHOOTING TOUCH TEST CHART TO SERVICE REVERSING VALVES from Compressor SUCTION TUBE to Compressor Tube to INSIDE Tube to OUTSIDE Capillary Tube DISCHARGE TUBE LEFT Pilot RIGHT Pilot N A TVB Hot Cool TVB as 1 Check Electrical circuit and coil Capillary Tube lt vo NOTES TEMPERATURE OF VALVE BODY WARMER THAN VALVE BODY POSSIBLE CAUSES CORRECTIONS No voltage to coil Repair electrical circuit Defective coil Replace coil Check refrigeration charge Low charge Repair
69. o coldest position Test thermostat and replace if inoperative Compressor hums but cuts off on overload Hard start compressor Direct test compressor If compressor starts add starting components Open or shorted compressor windings Check for continuity and resistance Open overload Test overload protector and replace if inoperative Open capacitor Test capacitor and replace if inoperative Inoperative system switch Test for continuity in all positions Replace if inoperative Broken loose or incorrect wiring POSSIBLE CAUSE Refer to appropriate wiring diagram to check wiring TO CORRECT Fan motor does not run PROBLEM Inoperative system switch Test switch and replace in inoperative Broken loose or incorrect wiring Refer to applicable wiring diagram Open Capacitor Test capacitor and replace if inoperative Fan speed switch open Test switch and replace if inoperative Inoperative fan motor POSSIBLE CAUSE Test fan motor and replace if inoperative Be sure internal overload has had time to reset TO CORRECT Does not cool or cools only slightly PROBLEM Undersized unit Refer to Sizing Charts Thermostat open or inoperative Set to coldest position Test thermostat and replace if necessary Dirty filter Clean as recommended in Owner s Manual Dirty or plugged condenser or evaporat
70. o shift replace valve PROBLEM POSSIBLE CAUSE TO CORRECT Heating capillary tube partially Check for partially starved outer coil Replace heating restricted capillary tube Cooling adequate 4 heating insufficient Check valve leaking internally Switch unit several times from heating to cooling Check temperature rise across the coil Refer to specification sheet for correct temperature rise Reversing valve failing to shift Deenergize solenoid coil raise head pressure ener completely bypassing hot gas gize solenoid to break loose If valve fails to make complete shift replace valve 51 PROBLEM POSSIBLE CAUSE TO CORRECT Compressor will not turn Outdoor thermostat Refer to the heating data on applicable models for off and operate on heating Applicable models the preselected temperature the compressor shuts element only during low off and the electric element is energized outside ambients PROBLEM POSSIBLE CAUSE TO CORRECT Fuse link Check fuse link for continuity If defective replace Check amperage draw of element If no amperage ompressor shuts off on elementddes hot heat E Check voltage to element If voltage is okay check Heat relay or heater contactor coil open 52 Troubleshooting Heating Cooling Electric Models PROBLEM POSSIBLE CAUSE TO CORRECT Check continuity of coll Heater relay or contactor stuck open Inspect test continuity with ohmmet
71. ocess tube below pinch off on the suction side of the compressor Connect the line from the nitrogen tank to the suction process tube Drift dry nitrogen through the system and un solder the more distant connection first Filter drier high side process tube etc Replace inoperative component and always install a new filter drier Drift dry nitrogen through the system when making these connections Pressurize system to 30 PSIG with proper refrigerant and boost refrigerant pressure to 150 PSIG with dry nitrogen Leak test complete system with electric halogen leak detector correcting any leaks found Reduce the system to zero gauge pressure Connect vacuum pump to high side and low side of system with deep vacuum hoses or copper tubing Do not use regular hoses Evacuate system to maximum absolute holding pressure of 200 microns or less NOTE This process can be speeded up by use of heat lamps or by breaking the vacuum with refrigerant or dry nitrogen at 5 000 microns Pressure system to 5 PSIG and leave in system a minimum of 10 minutes Release refrigerant and proceed with evacuation of a pressure of 200 microns or less Break vacuum by charging system from the high side with the correct amount of refrigerant specified This will prevent boiling the oil out of the crankcase NOTE If the entire charge will not enter the high side allow the remainder to enter the low side in small increments while operating the
72. oll through all error codes logged Press the COOLER button to see the reverse order of all error codes logged When the end of logged error codes is reached the temperature set point will appear IMPORTANT Error Codes are cleared from the log by exiting from Error Code Mode To exit on XQ models press Timer On Off button To exit QME models press A C Start and On Off buttons Or unplug unit to exit Error Code Mode Plug unit in after 5 seconds to resume normal operation of unit TESTING THE ELECTRONIC CONTROL ERROR CODE LISTINGS E1 SHORT CYCLE SITUATION Defined as compressor powered on before the three minute time delay ten times in one hour Investigate and correct short cycling problem E2 KEYBOARD STUCK ERROR If key button s are pressed continuously for twenty seconds or more If MODE key is stuck unit will default to cool Exit Error Code Mode to see if error E2 is no longer displayed and unit is functioning Replace board if 22 still displays after exiting Error Code Mode E3 FROST PROBE OPEN Normal operation is allowed Ohm frost probe Replace probe if ohm value not read If ohm value present replace board E4 FROST PROBE SHORT Normal operation allowed Replace probe E5 INDOOR PROBE OPEN Control assumes indoor ambient temperature is 90 degree F and unit will operate Ohm indoor probe Replace probe if ohm value not read E6 INDOOR PROBE SHORT Control assumes ambient temperature is 90 degree F and unit w
73. or coil Use steam or detergents to clean Poor air circulation in area being cooled Adjust discharge air louvers Use high fan speed Fresh air or exhaust air door open on applicable models Close doors Instruct customer on use of this feature Low capacity undercharge Check for leak and make repair Compressor not pumping properly Check amperage draw against nameplate If not conclusive make pressure test TO CORRECT Unit does not run Fuse blown or circuit tripped Replace fuse reset breaker If repeats check fuse or breaker size Check for shorts in unit wiring and Power cord not plugged in System switch in Off position Set switch correctly Inoperative system switch Loose or disconnected wiring at switch or Check wiring and connections Reconnect per wiring other components 46 Dirty filter Clean as recommended in Owner s Manual Restricted air flow Check for dirty or obstructed coil clean as re freezes up Test for shorted thermostat or stuck contacts Short of refrigerant Partially restricted capillary De ice coil Check temperature differential across coil Touch test coil return bends for same tempera ture Test for low running current PROBLEM POSSIBLE CAUSE TO CORRECT Excessive heat load Unit undersized Test cooling performance of unit Replace with larger unit Compressor runs Restriction in line Check for partially ic
74. orted Disconnect power to unit Remove resistor from Applicable models thermostat bulb block Plug in unit and allow to Room temperature operate Feel resistor for heat If no heat is felt uneven replace resistor Heating cycle Wide differential partial loss of Replace thermostat and check thermostat bulb charge Incorrect wiring Refer to appropriate wiring diagram Resistor is energized during the on cycle of compressor or fan Incorrect wiring Refer to appropriate wiring diagram Defrost control timer motor not advanc Check for voltage at TM and TM1 on timer If Defrost control out of calibration If outside coil temperature is 25 F or below and preselected time limit has elapsed replace the defrost control Vetrost control contacts stuck If the contacts remain closed between terminals 2 and 3 of the defrost control after preselected time interval has passed replace control Defrost control bulb removed from coil Reinstall and assure that good bulb to coil contact is or not making good coil contact made 50 PROBLEM POSSIBLE CAUSE TO CORRECT Outdoor thermostat does not cut off Defective thermostat replace Unit does not heat compressor at the preselected tem adequately perature and bring on heating element Fresh air or exhaust door open Check if operating properly Instruct customer on proper use of control Dirty filter Clean as recommended in Owner s Manual Unit
75. ositioned in front of the evaporator coil to sense the return air temperature Thermo stat malfunction or erratic operation is covered in the trouble shooting section of this manual TEST 1 Remove leads from thermostat 2 Turn thermostat knob clockwise to its coldest position 3 Test for continuity between the two terminals Contacts should be closed 4 Turn thermostat knob counterclockwise to its warmest position 5 Test for continuity contacts should be open NOTE The thermostat must be within the temperature range listed to open and close THERMOSTAT Models ES YS EM YM EL YL See Figure 29 A cross ambient thermostat is used on all heat pump and electric heat units In addition to cycling the unit in a heating or cooling operation the thermostat will terminate the cooling cycle in the event ice forms on the evaporator coil in this case the thermostat functions as a de ice control A resistor anticipator is positioned within a plastic block to supply a small amount of heat to the bulb area to prevent long off cycles in the Cool Fan Auto MoneySaver position see Figure 8 Acurrent feedback through the fan motor windings during off cycle completes the circuit to the resistor In the heating cycle the heat anticipator is energized to supply a small amount of heat during the on cycle This will open the contacts in the thermostat prematurely to maintain a closer differential between the cut in and
76. rculate through the system With a complete restriction there is no circulation of refrigerant in the system Restricted refrigerant systems display the same symptoms as low charge condition When the unit is shut off the gauges may equalize very slowly Gauges connected to a completely restricted system will run in a deep vacuum When the unit is shut off the gauges will not equalize at all Outdoor Coil Gauges may equalize very slowly Partially Restricted System Accumulator Suction Pressure Indoor Coil Deep Vacuum Outdoor Coil Compressor Gauges will not equalize with unit shut off Completely Restricted System 44 Routine Maintenance NOTE Units are to be inspected and serviced by qualified service personnel only Clean the unit air intake filter at least every 250 to 300 fan hours of operation or when the unit s indicator light is on if so equipped Clean the filters with a mild detergent in warm water and allow to dry thoroughly before reinstalling The indoor coil evaporator coil the outdoor coil condenser coil and base pan should be inspected periodically yearly or bi yearly and cleaned of all debris lint dirt leaves paper etc Clean the coils and base pan with a soft brush and compressed air or vacuum If using a pressure washer be careful not to bend the aluminium fin pack Use a sweeping up and down motion in the direction of the vertical aluminum fin pack when pressure c
77. rse 35 DEFROST THERMOSTAT Heat Pump Models Figure 32 DEFROST BULB LOCATION Heat Pump Models Only See Figure 33 The defrost control bulb must be mounted securely andin the correct location to operate properly Figure 33 DEFROST THERMOSTAT BULB LOCATION All Heat Pump Models See Figure 32 Retainer Slide the bulb end of the thermostat defrost under the retainer as shown RESISTOR Heat Anticipator See Figure 34 Failure of the resistor will cause prolonged off and on cycles of the unit When replacing a resistor be sure and use the exact replacement Resistor ratings are as follows 115 Volt 5 000 ohms 3 watt 230 Volt 20 000 ohms 3 watt RESISTOR Figure 34 CAPACITOR RUN See Figure 35 Arun capacitor is wired across the auxiliary and main winding of a single phase permanent split capacitor motor such as the compressor and fan motor A single capacitor can be used for each motor or a dual rated capacitor can be used for both The capacitor s primary function is to reduce the line current while greatly improving the torque characteristics of a motor The capacitor also reduces the line current to the motor by improving the power factor of the load The line side of the capacitor is marked with a red dot and is wired to the line side of the circuit CAPACITOR TEST 1 Remove capacitor from unit 2 Check for visual damage such as bulges cracks or leaks DUAL RATED RUN Fi
78. rvice cord to unit or through separate ground wire provided on permanently connected units Be sure that branch circuit or general purpose outlet is grounded Receptacle The field supplied outlet must match plug on service cord and be within reach of service cord Do NOT alter the service cord or plug Do NOT use an extension cord Refer to the table above for proper receptacle and fuse type FRIEDRICH AIR CONDITIONING CO Post Office Box 1540 e San Antonio Texas 78295 1540 4200 N Pan Am Expressway e San Antonio Texas 78218 5212 210 357 4400 e FAX 210 357 4480 Visit us on the Internet at www friedrich com 22 INSTALLATION NOTES Supply Cord All with right angle plug 6 on 115V 5 on 230 208V Room air conditioners include accessories for window or thru wall installation TwinTemp models include accessories for thru wall installation Window mounting requires use of optional accessory kit as listed below CAUTION Electric shock hazard Turn off electric power before service or installation All electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Electrical Code and all local codes which have jurisdiction Failure to do so can result in property damage personal injury and or death Eon It matters CERTIFIED RATING CAPACITY EER amp AMPERES anufacturers Manufacturer Certified to ASSOCIATION OF HOME APPLIANCE MANUFACTUR
79. s 41 NOTE Heat pump refrigeration drawing Reversing Compressor p Li Valve Accumulator Suction Pressure Much Lower Head Pressure Outdoor Lower Indoor Coil Coil Compressor Running Quieter than Normal Amps Lower Undercharged System Overcharged Refrigerant Systems Compressor amps will be near normal or higher Noncondensables can also cause these symptoms To confirm remove some of the charge if conditions improve system may be overcharged If conditions don t improve Noncondensables are indicated Whenever an overcharged system is indicated always make sure that the problem is not caused by air flow problems Improper air flow over the evaporator coil may indicate some of the same symptoms as an overcharged system An over charge can cause the compressor to fail since it would be slugged with liquid refrigerant The charge for any system is critical When the compressor is noisy suspect an overcharge when you are sure that the air quantity over the evaporator coil is correct Icing of the evaporator will not be encountered because the refrigerant will boil later if at all Gauges connected to system will usually have higher head pressure depending upon amount of overcharge Suction pressure should be slightly higher Indoor Coil Accumulator Suction Pressure Noticeably High QJ Overcharged System Head Pressure Outdoor Slightly Coil Compressor E High
80. sor through the discharge line as a hot high pressure gas vapor The refrigerant enters the condenser coil where it gives up some of its heat The condenser fan moving air across the coil s finned surface facilitates the transfer of heat from the refrigerant to the relatively cooler outdoor air When a sufficient quantity of heat has been removed from the refrigerant gas vapor the refrigerant will condense i e change to a liquid Once the refrigerant has been condensed changed to a liquid it is cooled even further by the air that continues to flow across the condenser coil The RAC design determines at exactly what point in the condenser the change of state i e gas to a liquid takes place In all cases however the refrigerant must be totally condensed changed to a liquid before leaving the condenser coil Suction Line Evaporator Coil 5 Metering Device Refrigerant Strainer Drie am The refrigerant leaves the condenser coil through the liquid line as a warm high pressure liquid It next will pass through the refrigerant drier if so equipped It is the function of the drier to trap any moisture present in the system contaminants andlarge particulate matter The liquid refrigerant next enters the metering device The metering device is a capillary tube The purpose of the metering device is to meter i e control or measure the quantity of refrigerant enter
81. t provide sufficient cooling for the compressor motor When this occurs the motor winding temperature will increase causing the motor to overheat and possibly cycle open the compressor overload protector Continued overheating of the motor windings and or cycling of the overload will eventually lead to compressor motor or overload failure METHOD OF CHARGING The acceptable method for charging the RAC system is the Weighed in Charge Method The weighed in charge method is applicable to all units It is the preferred method to use as it is the most accurate The weighed in method should always be used whenever a charge is removed from a unit such as for a leak repair compressor replacement or when there is no refrigerant charge left in the unit To charge by this method requires the following steps 1 Install a piercing valve to remove refrigerant from the sealed system Piercing valve must be removed from the system before recharging 2 Recover Refrigerant in accordance with EPA regulations 3 Install a process tube to sealed system 4 Make necessary repairs to system 5 Evacuate system to 250 300 microns or less 6 Weigh in refrigerant with the property quantity of R 22 refrigerant 7 Startunit and verify performance 8 Crimp the process tube and solder the end shut NOTE In order to access the sealed system it will be necessary to install Schrader type fittings to the process tubes on the discharge and suc
82. te vapor barrier in building Advise customer structure particularly floors 49 Troubleshooting Heating Heat pumps PROBLEM POSSIBLE CAUSE TO CORRECT Thermostat setting Set thermostat to a warmer position No heating fan operates Compressor not operating Check compressor wiring Check for open internal or external overload Check wiring Defective system switch Testsystemswith 1 Testsystemswith 1 switch PROBLEM POSSIBLE CAUSE TO CORRECT Restricted filter Clean as recommended in Owner s Manual M Outdoor thermostat Check if outdoor thermostat is energizing the heating Insufficient heating Applicable models element at its predetermined temperature setting Check control Fresh air or exhaust door open _____ PROBLEM POSSIBLE CAUSE TO CORRECT Fan operates in Inoperative system switch Check continuity of switch constant position but not in automatic Incorrect wiring Check applicable wiring diagram MoneySaver PROBLEM POSSIBLE CAUSE TO CORRECT Defective thermostat Incorrect differential setting Replace thermostat Temperature varies from Heat anticipator resistor shorted Check voltage to resistor If voltage okay remove comfortable to overly Applicable models resistor from thermostat bulb block With current on warm feel resistor for warmth If no heat can be felt replace anticipator PROBLEM POSSIBLE CAUSE TO CORRECT Heat anticipator resistor sh
83. ted with the fan operating at low medium or high NOTE Heat pump models with electric heat in the heat speed in the cooling or heating mode The fan motor can also position heating element only will be energized when be operated independently on medium speed See switch outdoor temperature is below the operating range of section as indicated on decorative control panel the heat pump 1 Off Position everything is off 2 Lo Cool Position fan operates on low speed Figure 25 SYSTEM CONTROL SWITCH compressor is on Heat Pump amp Electric Heat Models 3 Med Cool Position fan operates on medium speed compressor is on 4 Cool Position fan operates on high speed compressor is on 5 Hi Heat Position fan operates on high speed compressor or electric heater is on 6 Med Heat Position fan operates on medium speed compressor or electric heater is on SYSTEM CONTROL SWITCH TEST See Figure 25 Disconnect leads from control switch Turn control to position being tested There must be continuity as follows Figure24 SYSTEM CONTROL PANEL Heat Pump amp Electric Heat Models 1 Position no continuity between terminals All Small Medium amp Large Chassis units E Cte m TRES YS ES YM EM YL AND EL 2 Lo Cool Position between terminals C and 3 C2 and 9 LO and M S AR and 5 3 Med Cool Position between terminals 3 C2 and 2 M and M S
84. the FILTER ALERT button to turn off the flashing light ON OFF A TO ADJUST TEMPERATURE COOLER Touch COOLER and hold until QUIETMASTE the display shows the desired room temperature WARMER Touch WARMER and hold until the display shows the desired room temperature DISPLAY OE E FAHRENHEIT CELSIUS Touch F C to show the temperature in Celsius touch again to Cooler Power show Fahrenheit Money ADJUST THE FAN SPEED Temperature Touch SPEED 1 4 until the display shows the desired fan speed F1 is the lowest setting SLEEP En SETTING F2 is LOW F3 is MEDIUM F4 is HIGH Touch SMART FAN light on and the fan DISPLAY speed will adjust automatically to maintain the i desired comfort level 5 Touch SPEED 1 4 for manual control of fan 1 4 FAN speeds Smart Center TO SET THE CLOCK TIME Touch SET HOUR CLOCK and hold until the Smart Center 9 hour closest to the actual time appears in the HISSET ELECTRONIC CONTROLS display Make sure you set A M and P M properly Minutes will NOT show on the display Set Hour Clock A TO SET THE TIMER STOP TIME Touch A C STOP and hold until the hour you want the unit to shut off appears in the display START TIME Touch A C START and hold until the hour you want the unit to come on appears in the display DISPLAY Touch TIMER ON light on to activate the timer function Touch TIMER OFF light A C
85. ting YQ06J10A 1 EVAPORATOR SUCTION HEAD CONDITIONS BTUH AIR TEMP RISE WATTS PRESSURE 70 F Inside 57 F Outside 61 285 70 F Inside 52 F eee 58 275 50 ARAM 70 F Inside 47 F Outside 5300 55 57 70 F Inside 45 F Outside 5200 sio 5260 35 70 F Inside 42 F Outside 51 255 SPECIFICATIONS 14 1 KS10J10 1 KS12J10 1 KS12J30A1 KM18J30A2 KM21J304 KL21J30A3 KS10J10 3 KS12J103 KS12J30A3 KM18J30A3 KL25J30A1 BTUH 12500 18000 21000 25000 14000 10000 12000 12500 18000 20500 24700 10 0 9 6 9 0 8 3 10 1 10 3 9 5 10 0 9 6 9 0 8 2 Volts 230 230 230 115 115 115 208 208 208 Amperes 5 8 8 3 10 5 9 1 10 8 6 2 9 1 11 3 1250 1875 2335 Total Watts 1385 1265 1250 1875 2280 12 0 _ eo Fuse Breaker Size Evaporator Air CFM 400 325 Fresh Air CFM Yes Yes Dehumidification Pts HR 37 2 8 3 5 25 15 16 25 15 16 203 16 33 51 Minimum Ext Into Room 3 3 16 Minimum Ext to Outside 18 15 16 PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL COMP DATA TEMP F PRESSURES RATINGS OIL 3 Y Y Yes Ye sr ee os os ss 63 aces 251516 I T EP AIR DROP F ROTOR AMPS OZ FLUID OZ KS10J101 ks1o103 190 790 269 fei 20 ns KS125103 s70 230 70 108 50 250 5 Kst2Ja0AT KS12430A3 570 230 790 2 8 26a 265040 118 21081 2252 750 20 po 60 40
86. tion of the compressor Proper recovery refrigerant procedures need to be adhered to as outlined in EPA Regulations PERSONNEL THIS SHOULD ONLY BE ATTEMPTED BY QUALIFIED SERVICE Undercharged Refrigerant Systems An undercharged system will result in poor performance low pressures etc in both the heating and cooling cycle Whenever you service a unit with an undercharge of refrigerant always suspect a leak The leak must be repaired before charging the unit To check for an undercharged system turn the unit on allow the compressor to run long enough to establish working pressures in the system 15 to 20 minutes During the cooling cycle you can listen carefully at the exit of the metering device into the evaporator an intermittent hissing and gurgling sound indicates a low refrigerant charge Intermittent frosting and thawing of the evaporator is another indication of a low charge however frosting and thawing can also be caused by insufficient air over the evaporator Checks for an undercharged system can be made at the compressor If the compressor seems quieter than normal it is an indication of a low refrigerant charge A check of the amperage drawn by the compressor motor should show a lower reading Check the Unit Specification After the unit has run 10 to 15 minutes check the gauge pressures Gauges connected to system with an undercharge will have low head pressures and substantially low suction pressure
87. uch A C STOP and hold until the hour the unit needs to shut off appears in the display A M or P M START TIME Touch A C START and hold until the hour the unit needs to come on appears in the display A M or P M Touch TIMER ON light on to activate the timer function Touch TIMER OFF light off to cancel the timer function desired Once the on and off times have been selected they will remain in memory and cycle daily until changed or until the unit is subject to a power interruption TESTING THE ELECTRONIC CONTROL 2001 XQ BOARDS amp QME BOARDS Checking Room Temperature 1 Check the room temperature at the electronic control pad by pressing the FAN SPEED button and the temperature UP button at the same time on XQ models 2 Check the room temperature at the electronic control pad by pressing at the same time the FAN SPEED button and the WARMER button on QME models The indoor temperature will display for 10 seconds Indoor temperature can be viewed in all modes including the TEST mode The display can be changed back to SET temperature by pressing any key except the ON OFF button or after 10 seconds has elapsed Activating Test Mode Activate test mode by pressing at the same time the MODE button and the temperature DOWN button on XQ models LEDs for Hour Start and Stop will blink 1 bps while Test Mode is active Activate test mode by pressing at the same time the MONEY SAVER button and the FILTER ALER
88. witch 3 Apply live test cord probes on black wire and common terminal of capacitor Motor should run at high speed 4 Apply live test cord probes on red wire and common terminal of capacitor Motor should run at low speed 5 Apply live test cord probes on each of the remaining wires from the speed switch or system switch to test intermediate speeds If the control is in the MoneySaver mode and the thermostat calls for cooling the fan will start then stop after approximately 2 minutes then the fan and compressor will start together approximately 2 minutes later SYSTEM SWITCH SQ Only Figure 7 System Control Panel SQ Models Only Figure 6 QSTAR Te Super High Efficiency Open Temperature Wait three minutes before restarting SYSTEM CONTROL SWITCH SQ Models See Figure 6 A five position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating at low medium or high speed The fan motor can also be operated independently on medium speed See switch section as indicated on the decorative control panel SYSTEM CONTROL SWITCH TEST See Figure 7 Disconnect the leads from the control switch There must be continuity as follows 1 Off Position no continuity between terminals 2 Lo Cool Position between terminals L1 and Lo and MS 3 Med Cool Position

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