ARGO 235H
Contents
1. PST ELECTRIC WIRING DIAGRA De THI ERN 2 KN CIN COIL s TT aux re gt C ea m m BLE a BLK o8 g P THe T ROOM 1 2 1 2 1 4 2 2 1 MOPS O O P13B BLK o BL PEN Hs GEN YEL JO GND D C R E GPHPTEL os COS P1FEH BLU B AIR SENSOR 5 R 250VAC T R BLK PCB P2 amp S E ur IT Es FMO ME 4 4 Bk 2 2 TR Mu en 313 FLP an REO 11 SE RED SUE 111 111 a z TO DISPLAY P1 F PLS E EE 1 2 2 2 2 8 176 16 SHEET z rss 12 7 B s 4 3 2 5 4 3 2 1 L 1 2 EN A yhess 11 E 1 1 gt WAT STANDARD La NLT 212 FACTORY li One SETTING B iB TES C WHT a l lels 4 3 2 eee roe s Y s z s s a 3 2 1 a IND e ASST 111F WHT N Lel je B 2p wer RED RED BLE _ COLLEGAMENTI CONTROLLO RISCALDAMENTO ACQUA CALDA ACCESSORIO ELECTRIC WIRING FOR HOT WATER CONTROL ACCESSORY PCB Controller SW IND ASSY Indicator assy FMI Indoor fan motor TH1 2 3 4 5 Thermistor TR Pow2. SA T ae 7 PCB P26 5 5 WAT 11 E MO Sirja aja e a TR Sedes e YEL FLP 3 og RED m 5 0 5 Eek tft een 515 RED are TO DISPLAY 1 F B7 geji i Hern 212 n a PC u 1 TO 16 slalala 1 3 110 12 5 4 3 2 1 5 4 3 41 12 EZ II THa iR E LOUT COIL I TE At aN TERE Wee 113 BLK AE HE M C2 TI N JAN gpk E 1 2 BLK r 1 x O gt 05 EE x az WHT 11 E STANDARD LS VLT PIE ULT FACTORY L ORG 086 Peay eee TELLE L BLK 8 7 e 5 a 3 2 1 EREIJE TM m 3 7 s5 s 4 3 2 1 Een 5 a BLK ASSY r 22 le Ep mT RED RED ALK lt 2 COLLEGAMENTI CONTROLLO RISCALDAMENTO ACQUA CALDA ACCESSORIO ELECTRIC WIRING FOR HOT WATER CONTROL ACCESSORY PCB Controller SW IND ASSY Indicator assy FMI Indoor fan motor TH1 2 3 4 5 Thermistor TR Power transformer TP Terminal plate CM Compressor motor HWC Hot water control OLR1 Overload relay Limit water thermostat FMO Outdoor fan motor EWV Water electric valve C1 2 3 Capacitor FS Float switch PC Condensate pump motor FLP Flap motor 20S 4 way valve F1 Fuse PCB FMO Controller Outdoor fan motor 23 TROUBLESHOOTING CHECK BEFORE AND AFTER TROUBLESHOOTING A Check power supply wiring e WARNING If the following troubleshooting must be done with power being supplied be careful about any uninsulated live part that can cause ELECTR
3. 60 19 23 27 31 35 39 43 outdoor air D B temp C Power input 115 gt indoor air D B temp 32 27 110 105 100 95 90 85 80 75 19 23 27 31 35 39 43 outdoor air D B temp C E E R 160 140 indoor air D B temp C 120 100 80 60 40 19 23 27 31 35 39 43 outdoor air D B temp C Heating characteristics Outdoor relative humidity 85 Capacity 130 120 indoor air D B temp 20 C 110 100 90 80 70 60 10 6 2 2 6 10 outdoor air D B temp C Power input 115 110 indoor air D B temp 20 C 105 100 95 90 85 80 10 6 2 2 6 10 outdoor air D B temp indoor air D B temp 20 C 10 6 2 2 6 10 outdoor air D B temp C KEN REFRIGERANT FLOW DIAGRAM COOLING MODEL ARGO 245C Heat exchanger Heat exchanger tt ID Capillary tube Strainer REFRIGERANT FLOW DIAGRAM HEAT PUMP MODEL ARGO 235H Heat exchanger Heat exchanger CHD CHD Strainer Capillary Check Strainer tube valve Cooling cycle Heating cycle FUNCTION 1 Cool Mode Operation RT SPT c over 3 min over 3 min Se ON Dod E coMP fore mm M at AMD MES p i ON AE OFAN Boer aC MEE i over 30 sec H s M E L ON RV forF
4. Outdoor air intake temp ue 32 C DB 23 C WB 19 C DB 14 C WB Heat 24 C DB 18 C WB eating 8 C DB 9 C WB Dr 32 C BS 8096 R U 43 C DB y 16 C BS 80 R U 16 C DB sSUOISUSWIP 082 a AINO LINN dW d 1 503 30H NIVHO 31 5 30 02 5 01123 02 3015 1H914 NOII23NNOO 831108 5 01123 02 3015 1437 117 01123 02 831108 DIMENSIONAL DATA PERFORMANCE CHARTS ARGO 245C Cooling only model Conditions Power source 230 V 1 50 Hz Single phase Indoor air velocity High speed Cooling characteristics Indoor relative humidity 48 Capacity 140 130 120 indoor air D B temp 110 100 90 80 70 60 19 23 27 31 35 39 43 outdoor air D B temp C Power input 120 indoor air D B temp C 2 115 27 110 105 100 95 90 85 19 23 27 31 35 39 43 outdoor air D B temp C E E R z 160 z indoor air temp C 140 120 100 80 60 19 23 27 31 35 39 43 outdoor air temp ARGO 235H Heat pump model Conditions Power source 230 V 1 50 Hz Single phase Indoor air velocity High speed Cooling characteristics Indoor relative humidity 48 Capacity 140 130 120 indoor air D B temp C 110 100 90 80 70
5. Check fuse on PCB Ass y in the unit for continuity Measure rasistance of indoor fan motor winding FMI 5 Check setting temperature COOL Is room temperature too low Try to lower setting temperature by temperature setting button Unit still does not run Try to use another remote control unit Remote control unit is defective If fuse blows there is a possibility of short circuit OK PCB Ass y in indoor unit is defective HEAT 15 room temperature too high Try to raise setting temperature by temperature setting button Unit still does not run Try to use another remote control unit Remote oontrol unit is defective 28 POOR COOLING OR POOR HEATING Only if IFEEL is selected Check position of remote control unit Change position of remote control Cool or warm air from air conditioner unit reaches position directly Measure temperatures of suction and discharge air of air conditioner Possibility of gas shortage Charge refrigerant gas Temperature difference between suction and discharge air is large enough approx 15 or more Air filter is clogged Clean filter Set fan speed to either high or Review cooling or heating load esti A mate if performance of air conditio Reduce cooling or heating load or neris normal install an additional unit H EXCESSIVE COOLING OR HEATING Only if IFEEL is selected Remote
6. In Cool Mode the operation of the Compressor COMP Outdoor Fan OFAN and Indoor Fan IFAN are determined by the difference between the Room Temperature RT and the Set Point Temperature SPT as in the graph above Notes a In this graph the IFAN is operating in the Auto Fan Speed setting If the user has selected the low medium or high fan speed the IFAN will run constantly at that speed only b In addition to the value of RT SPT the operations of the relays are also controlled by protection delays For example a the minimum On Off time of the COMP is 3 min and 3 min respectively and b the IFAN can change speed only after it has operated at the same speed for 30 sec in autofan setting and 1 sec for H M L setting 11 2 Heat Mode Operation RT SPT c am nd IFAN Note 1 Nota 2 The Heat Mode operation is similar to the Cool Mode operation The COMP OFAN and IFAN are mainly controlled by the value of RT SPT In the graph above the IFAN is operating in Auto Fan speed mode Therefore tha IFAN speed changes automatically according to the RT SPT Note 1 The 30s IFAN operation is for purging the heat from the in coil after COMP has stopped Note 2 The IFAN will not be turned on until the in coil temperature is high enough as shown in the graph below to prevent the unit from supplying cool air IFAN Speed ICT In ooil Tempera
7. TECHNICAL DATA amp SERVICE MANUAL ARGO 245C Cooling only model ARGO 235H Heat pump model 0 8180 405 1 01 2006 Table of contents KM SPECIFICATIONS 1 Unit specifications 2 Major Component specifications KEN OPERATING RANGE Kel DIMENSIONAL DATA NEN PERFORMANCE CHARTS E REFRIGERANT FLOW DIAGRAMS MLM FUNCTIONS 1 Cool Mode Operation Heat Mode Operation Auto Cool Heat Mode Operation Dry Mode Operation Fan Mode Operation Protection Operations in Cool and Dry Modes Sleep Function Daily Timer Function IFEEL Function 2 3 4 5 6 7 Protection Operations in Heat Mode 8 9 10 11 Manual Unit control and Led indicators KEM ELECTRIC WIRING DIAGRAMS TROUBLESHOOTING Nl REFRIGERANT CHARGE NU CHECKING ELECTRAL COMPONENTS 1 Measurement of Insulation Resistance 2 Checking Continuity of Fuse on PCS Ass y 3 Checking Motor Capacitor KN BOILER CONNECTION KIT 1 Specifications and operating limits 2 Performance charts 3 Component specifications 4 Hydraulic connections and valves Page 31 32 33 34 35 37 WM SPECIFICATIONS 1 UNIT SPECIFICATIONS Power source 220 240V 50Hz PERFORMANCES COOLING COOLING Capacity air BTU h 8360 8020 conditioner Capacity hot water 7160 system 2 1 Air circulation high med low m h 330 300 280 Moisture removal hi
8. control unit is placed where it detect room temperature pr Change position of remote control party unit 29 I IF ASENSOR IS DEFECTIVE ICT indoor coil sensor OCT outdoor coil sensor RT room ambient temperature are defective e Stand by lamp on front side of indoor 5 Thennistor ICT and and RT are unit is blinking 7 defective e Replace thermistor Allarm signal Stanby lamp on the front side of the indoor unit will blink when the thermistor is defective At the same time the outdoor unit will stop Indoor operate only for ventilation sensor N N 4 N N N N 2 a a o 30 REFRIGERANT CHARGE pO ARGO 245C ARGO 235H REFRIGERANT CHARGE R410A 600 g 520 g IMPORTANT In order to recharge the unit use the high pressure side gate Preliminary operation after refrigerant charge To distribute the oil to all the moving sliding portions run the compressor for at least 3 seconds within 15 minutes after refrigerant charge 31 1 CHECKING ELECTRICAL COMPONENTS Measurement of Insulation Resistance EATHER LINE The insulation is in good condition if the resi P d t sta a b c nce exceeds 1MOhm i CLIP pocos N TESTER Fig 1 PROBE f Power Supply Wires R Clamp the earthed wire of the power supply wires e with the lead clip of the insulation resistance tester and measure the resistance by p
9. formation will be detected by i Compare the OCT with a Deicing Dynamic Temperature Threshold and ii Detect the drop in ICT which accompany the ice formation b The Static Temp Detection will be done by comparing the OCT with a Deicing Static Temperature Threshold The Deicing Data Record is used to determine the time delay between two deicing cycles In general the time delay will be increased if the last deicing cycle can be completed quickly 18 2 Indoor Coil High Pressure Protection in Heat Mode The in coil high pressure protection prevents the build up of high pressure at the in coil during heating operation ICT c 66 l 61 oe 1 l I 55 Je 2 2 2 2 2 2 2 2 2 ir 00 j 52 Re geet ree cr jaa PETI I I l 1 l U COMP 1 1 COMP 15 forced OFF OFF I I l I ANY OFAN OF AN is forced OFF OFF 19 8 Sleep Function Room temperature is automatically controlled to compensate for body temperature variations while sleeping This mode of operation is designed for maximal comfort in both COOL and HEAT modes RT 1 Unitis turned to SB slee eration 3 7 12 Hours Sleep operation i after Sleep 6 3 4 SPT 2 SP
10. unit will operate in on state After the COMP has been working for 15 min it is forced off for 3 5 min Note 1 COMP is forced off in Dry on state Note 2 COMP is forced to operate in Dry off state 14 5 Fan Mode Operation In Fan Mode the indoor fan is turned on to improve the air circulation in the room COMP and OFAN remain OFF all the time Note If the user has selected the Auto Fan Speed setting the IFAN speed would be selected by the unit automatically according to the difference between RT and SPT as in Cool Mode 6 Protection operations in Cool and Dry Mode 1 Indoor Coil Defrost Protection The in coil defrost protection can prevent the ice formation at the in coil when the ambient temperature is low ICT one dt meet nn ON l l FAN t1 5 min minimum for each COMP starting 12 OFAN cycling alternate between ON and OFF every 30 sec for 20 min maximum t3 COMP and OFAN stop for 10 min 15 2 Outdoor Coil High Pressure Protection The out coil high pressure protection prevent the build up of high pressure at the out coil during cooling operation OCT c 21 55 COMP OFAN IF AN OPER LED Note 1 In some applications the outdoor fan and the compressor are controlled together by the COMP relay output from the controller In this case it will take more time for the out coil to cool down during the high pressure protectio
11. IC SHOCK B Check power supply e Check that voltage is in specified range 10 of the rating e Check that power is being supplied SYSTEMATIC CHART OF TROUBLESHOOTING AIR CONDITIONER DOES NOT OPERATE Circuit breaker trips or fuse blows e When circuit breaker is set to ON it trips in a few moments Resetting is not possible e Measure insulation resistance there is a possibility of ground fault If resistance value is 1 MOhm or less insu lation is defective Circuit breaker trips in several minutes after turning air conditioner ON 1 There is a possibility of short circuit Check capadty of circuit breaker Replace it with suitable one Capacity of circuit breaker is suitable Larger capacity YES Measure resistance of compressor motor winding YES Measure resistance of outdoor fan motor winding 2 The unit does not run Power is not supplied Check power supply Is power being supplied to wall receptacle Check fuse on PCB Ass y Check fuse on PCB Ass y for continuity If fuse blows there is a possibility of short circuit Measure resistance of indoor fan motor winding Circuit breaker is tripped Reset the breaker Wait for recovery or contact power company Power failure 24 c Water level alarm Operation lamp is blinking Malfunctioning of the condensate drainage system NOTE In case of emergency the air conditioner can work by dra
12. STOR ROOMSENSOR TH as alternative CONTROLLER AWC Differentia IL Mg 71 THERMISTOR ROOMSENSOR TH Resistance at 25 k LIMIT WATER THERMOSTAT TM loIoillldAl iA 30 C 1 Thermostat Setting 1 1 WATER ELECTRIC VALVE EWV 1 7 Power consumpion Continous Start up Full stroke time at 50 C Actuator stem Actuator stem 4 lectrical rating 0 1 6 250Vac 1 Water HEAT EXCHANGER COL A 4 Aluminium plate fin Copper tube 36 3 HYDRAULIC CONNECTIONS AND VALVES 4 HOT WATER COIL 2 1 2 GAS CONTROL VALVE 3 1 2 GAS HOLDER 4 1 2 GAS WATER ELECTRIC VALVE 4 Actuator 4 Actuator stem down stem up SCOT Jo 4 2 3 way NO ByPass 37 argoclima s p a Via Varese 90 21013 Gallarate Va Italy Tel 39 0331 755111 Fax 39 0331 776240 www argoclima it
13. T 1 SPT SPT 1 SPT 2 Pee 5 3 J bee pev Start 1 2 3 4 7 12 Time Hr Sleep 9 Daily Timer Function There are 2 independent timers ON Timer and OFF Timer Unit can be programmed to be ON and OFF automatically at preset time everyday by using a remote controller The resolutions of the ON OFF timers are 10 min 10 IFEEL Function There are 2 independent timers ON Timer and OFF Timer Unit can be programmed to be ON and OFF automatically at preset time everyday by using a remote controller The resolutions of the ON OFF timers are 10 min 20 11 Manual Unit Control and LED indicators RECEIVER _ TIMER LAMP 4 STANDBY LAMP 9 OPERATION LAMP A OPERATION BUTTON UA The push button switch and the LED indicators on display panel let the user to control the unit operation without a R C Remote Controller Their operations are provided below Push Button Switch Use to cycle the operation mode of the A C unit among COOL HEAT and OFF modes without using the R C Every time this switch is pressed the next operation mode is selected OPERATION in order BUTTON Off gt Cool mode gt Heat mode gt Off gt for heat pump model Off gt Cool mode gt Off gt for cooling only model The A C will start in Auto IFAN speed and Flap mode as the last setting The temperature setting is 22 C for cooling and 28 C for heat
14. brass pipe Resistance at 25 C kQ 10 3 HERMISTOR ROOM SENSOR TH2 EEn Resistance at 25 C kQ Resistance at 25 C kQ 10 1 HERMISTOR OUTDOOR AIR SENSOR 5 esistance at 25 C 10 x 5 umper P7 Resistance at 25 C 4 7 5 W 0 5 5 K35406 MO2024 Coil resistance at 25 C GRY WHT 545 630 WHT VLT 922105 VLT ORG 62 71 GRY BRN 78 90 Safety device Internal bimetallic type Setting UF FAN amp FAN MOTOR FMO _____ O Coil resistance at 25 C Q BLU BRN 74x 5 BLU BLK 66x 5 Safety device Internal bimetallic type Open C 150 5K E Close Coil resistance at 20 C Q C R 3 863 Q 5 3 309 uF 30 Operating Open TO EE temperature Close CEC CONDENSATE PC ISAFETYFLOATSWITCH FS FLAP MOTOR FLP 2 4 WAYS VALVE 205 Model 5416 Coil rating 220 50 26 Coil resistence Ambient temp 20 Qh 14404 5 Alunimium plate fin copper tube 0 107 HEAT EXCHANGER COIL CONDENSER SSL Seat Coil Rows Fin pitch mm Face area THERMOSTATIC VALVE DRAIN PAN DP 25 1101 07 or DP 25 1107 B8 CC Close NS 546 OPERATING RANGE Cooling only model J Temperature indoor air miake temp Outdoor air miake temp 19 C DB 14 C WB 16 C BS 80 RU Heat pump model Temperature 1ndoorairintake temp
15. er transformer TP Terminal plate CM Compressor motor HWC Hot water control OLR1 Overload relay Limit water thermostat FMO Outdoor fan motor EWV Water electric valve C1 2 3 Capacitor FS Float switch PC Condensate pump motor FLP Flap motor 20S 4 way valve F1 Fuse PCB FMO Controller Outdoor fan motor 22 2 Heat pump model ARGO 235H pihan ELECIRIC WIRING DIAGRA dio tenten ELLEI SEN m 12 Dy s Gem BLK Pi O BLK zz Ly GEN YEL BLK mom BLU 1 7 on BLK o g BLu 1 2 A oe GRN VEL ROOM 1 2 IJE 1 4 gt 2 fa NOPS OR P138 BLE o BLU RM P5 NPS LEVEL 1ME COM MO RED P4 QU Oe M SEN ze SRN YEL 06ND 5 E En ALK ac GRM YEL M 8 CEO P17QI BLU s 2025 ENSOR 5 5 BLE 2
16. g range of the multimeter to the maximum value The capacitor is good if the pointer bounces to a great extent and the gradually returns to its origi nal position The range of deflection and deflection time deffer according to capacity of the capacitor FUSE PCB ASSY Fig 5 FUSE Fig 6 MULTIMETER COMPRESSOR MOTOR CAPACITOR FAN MOTOR CAPACITOR Fig 7 33 HH BOILER CONNECTION KIT Typical installation Hot water coil Existing water connections By installer ar 1 2 Gas Female i diameter Electric water valve Controller By installer E Air conditioner Boiler connection Kit unit 1 SPECIFICATIONS Standard conditions Valve and tubes including OPERATING LIMITS Max pressure ba 40 34 2 5 Performance on different conditions Capacity ruduction factor High speed 1 Med speed 0 96 Low speed 0 93 Pressure drop kPa Capacity 140 120 100 80 60 40 20 0 8 let water t mp outlet4water temp f WATER FLOW AND PRESSURE DROP 3 WAY VALVE AND PIPE INCLUDING N 100 150 200 250 300 Water f Pressure drop kPa 35 3 COMPONENT SPECIFICATIONS Boiler connection kit CONTROLLER AWC Thermostat Setting Differentia THERMI
17. gh speed Cooling 1 h Dry 27 C 60 R U liters 24h Dry 30 80 R U liters 24h ELECTRICAL RATINGS Voltage rating 220 240 Available voltage range 198 264 Running Ampere air conditioner Running Ampere hot water system 0 10 Power input air conditioner Power input hot water system 27 Power factor Compressor locked rotor amperes 17 FEATURES Controls temperature control Microprocessor Thermostat Control unit Wireless remote control unit Timer ON OFF 24 hours and program Fan speed air conditioner 3 Auto Fan speed hot water system Airflow direction Auto manual for hot water system Indoor Manual Air filter Washable easy access Compressor Rotary hermetic Refrig Stand Charge at shipmen R410A 600g 5209 Refrigerant control Capillary tube Sound pressure 45 43 41 level 42 39 32 Ducts diameter 2pcs mm 162 Water connections diameter 1 2 Gas Condensate drain system Not requested By duct DIMENSIONS AND WEIGHT Height Widht Depht Holes diameter in the wall 2 Net weight Data can be changed without notice NOTE Rating conditions Cooling outside air temp 35 C DB indoor air temp 27 C DB 19 C WB Heating outside air temp 7 C DB 6 C WB indoor air temp 20 C DB 2 MAJOR COMPONENT SPECIFICATIONS ONTROLLER PCB LE Jumper Setting J1 J8 see Electric waring diagram 374208021 THERMISTOR COIL SENSOR TH1 NTC with
18. ing mode WARNING the OFF position does not disconnect the power Use the main power switch to turn off power completely Led indicators TIMER LAMP 1 Lights up during Timer and sleep operation 2 Blinks continuously in case of any wiring trouble 1 Lights up when the Air conditioner is connected to power and STANDBY ready to receive the Remote Control command LAMP 2 Blinks continuously in case of any thermistor failure 1 Lights up in Operation mode Note OFF in standby mode 2 Blinks for 0 5 sec to announce that a R C infrared signal has OPERATION been received and stored LAMP 3 Blinks continuously during OCT outdoor coil temp High pressure protection Mode Deicing in Heating Mode 4 Blinks continuously in case of FS Float Switch trips for high water level 12 Recovery from Power Failure Last unit settings SPT operation mode louver settings etc are saved in the EEPROM in the unit In case of power failure these settings are restored automatically 21 1 Cooling only model ARGO 245C ELECTRIC WIRING DIAGRAMS
19. ining the condensate from the little pipe into a rather short container extract the little pipe and remove the cap The condensate drain system is obstructed Remove the obstruction Check electrical components connec tions and continuity of internal wiring DEFECTIVE Chack limit float switch FS Replace limit float switch FS DEFECTIVE Check drain pump motor PC Replace drain pump D Unit and compressor do not run The unit does not run when air conditioner is in following conditions When the room temperature is below the setting temperature During freeze prevention Check setting temperature Try to lower setting temperature by tem perature setting button The unit does not run Is room temperature too low NO Check room sensor thermistor TH2 PCB assy is defective E SOME PART OF AIR CONDITIONER DOES NOT OPERATE 1 ONLY INDOOR FAN DOES NOT RUN Check fan casing for Remove foreign Fan cannot be foreign matter on inside matter or repair turned Check fan rotation Turn fan gently once or twice by hand Check fan motor capacitor OK Measure resistance of fan motor winding Fan motor burnout or foreing matter in bearing Repair or replace DEFECTIVE Replace DEFECTIVE Replace fan motor 2 ONLY OUTDOOR FAN DOES NOT RUN Check fan casing for Remove foreig
20. lacing a probe on either of the power wires Fig 1 Then measure the resistance between the earthed wire and the other power wires Fig 1 TERMINAL PLATE Unit Clamp an aluminium plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on N terminal and then on L terminal the terminal plate Fig 2 COPPER TUBE OR METALLIC PART Fig 2 Measurement of Insulation Resistance for Electrical Parts CLIP Disconnect the lead wires of the disired electric part from terminal plate PCB Ass y capacitor etc Similarly disconnect the connector Then measure the insuration resistance Fig 1 to 4 EE TUBE OR INSULATION Refer to Electric Wiring Diagram METALLIC PART TESTER Fig 3 elf the probe cannot enter the poles because the FROM FAN MOTOR COMPRESSOR hole is too narrow then use a probe with a thinner AND OTHER PARTS pin METALLIC an PART PROBE N CLIP INSULATION TESTER Fig 4 32 2 Checking Continuity of Fuse on PCB Ass y Remove PCB Ass y from electrical component box Fig 5 Then pull out the fuse from PCB Ass y Check continuity of fuse by the multimeter Fig 6 3 Checking Motor Capacitor Remove the lead wires from the capacitor termi nals and then place a probe on the capacitor ter minals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measurin
21. n Fan cannot be foreign matter on inside matter or repair turned Check fan rotation Turn fan gently once or twice by hand Check fan motor capacitor OK Measure resistance of fan motor winding Fan motor burnout or foreing matter in bearing Repair or replace DEFECTIVE DEFECTIVE Replace fan motor 3 ONLY COMPRESSOR MOTOR DOES NOT RUN Check overload relay OLB It his tripped YES Measure resistance of compres sor motor winding OK Check compressor motor capaci Is temperature of compressor tor abnormally high YES OK Charge refrigerant gas Replace the compressor YES NO possibility of locked rotor 26 F AIR CONDITIONER OPERATES BUT ABNORMALITIES ARE OBSERVED HEAT PUMP MODEL 1 Operation does not switch from heat to cool or cool to heat Remote control unit may be defactive Receiver Ass y may be defective Measure resistance of solenoid coil winding 20 S 4 way valve 2 Check OPERATION BUTTON on the unit The unit PCB Ass e Push the button switch does not run is defectiv 3 Check remote control unit Try to run using another remote control unit YES First remote control unit is defective Check for residue buildup on transmitter NO Pim tratta of remote control unit i Check for residue buildup on remote NO EE control receiver on front of unit 27 4 Check fuse on PCB Ass y in the unit
22. n because the outdoor fan will be turned off with the compressor instead of working as in the graph above 16 7 Protection Operations in Heat Mode 1 Outdoor Coil Deice Protection The deice process is controlled by an Ice Detection Algorithm IDA The IDA is a unique control algorithm incorporated to maintain optimal utilization of the heat pump capacity especially in below zero outdoor temperature condition The out coil deicing will be activated nct only by static temperature detection as normally done but also while ice forming is detected on the out coil COMP to ON Di 40 or 19 Dr 5 Activate DDt setting Start counting TLD DTF ODT and OTF information from Deicing Dynamic Threshold sating routina OTF 1 TLO DI SO amp OCT during last 3 minutes amp OCT DST during last 3 minutes J 40 dog Dakar sea Notes LOT DT TimeD 17 The following routine runs continuously while is working in Heat Mode The routine outputs Deicing Dynamic Threshold DDT and Deicer Threshold Flag DTF to the main Deicer routine 1st COMP start OR deice complete Reset TLD cnt to 0 DTF 0 IFAN OF AN speed change Reset SCT cnt to 0 DTF 0 DDT OCT TempD DTF 1 DDT and DTF information to main algorithm ee Explanation The Ice Forming Detection will be done by two algorithms a In Dynamic Temp Detection the ice
23. ture Hi Med or Low fan speed whichis selected by the user In Auto Fan Speed Mode the fan speed is selected by the unit automatically instead 3 4 ICT pel indoor fan is forced to operate at low speed 12 3 Auto Cool Heat Mode Operation RT SPT ec COMP OFAN OFF RV OFF Auto Heat Mode Auto Cool Mode Auto Heat Mode In Auto Mode the unit switches between the Auto Cooling Mode and Auto Heating Mode automatically to maintain the room temperature RT at the set point temperature SPT 13 4 Dry Mode Operation RT SPT Pe 2 1 50 Time min CRY LOW IFAN ort i 5 minutes COMP ON time i ON i i o h i i COMP amp OFAN OFF i Max 15 minutes 35 min i Max 15 minutes emn Nolte 1 Pt Nde 2 In Dry Mode the unit operates in a mild cool mode to lower the humidity of the room In order to maintain a high efficiency in the drying operation without over lowering the room temperature excessively the Dry Mode is different from the Cool Mode in two ways The IFAN is forced to operate at low speed only And the IFAN is turned off with the COMP b The unit operates in either the Dry on state or the Dry off state If RT the unit will operate in Dry off state After the COMP has stopped working for 15 min it is forced to operate for 6 min If RT gt SPT the
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