TECHNICAL DATA & SERVICE MANUAL
Contents
1. gt EIE BRN iJ FS HUMIDITY SENSOR HUM Ha BLK 11 BLK as 7 0 Ail BRN Fs a PYEL P REC BLK 2 2 BLK 2 ROOM TH T ALK ROOM E amp A ALK AP WHT gt SPCWHT El monga monna Camo ELK COIL TH 10 4 FUNCTIONS 4 1 Operation Functions B Functions of the main unit controller Used to stop the unit when the remote controller is Unavailable Used when service inspection is performed During normal operation Starts operation from the remote controller Emergency operation When the remote con troller is unavailable moving this switch from ihe OFF position to the ON position starts automatic operation AUTO 23 set temp Used when operating performance checked Used when pump down is carried aut Cperates at the rated frequency At this time the main unitlamp flashes and the remote controller signal cannot be received his function is for shop displays Ordinarily itis not used Used during servicing ll AUTO cooling heating operation Selecting the operation mode 8 TEST 4 DEMO e When AUTO mode is selected the microprocessor calculates the difference between the set temperature and the room temperature and automatically switches to Cooling or Heating moda temp amp Set temp e COOL temp Set temp HEAT As shown by the example in the figure below with AUTO2. B Defrost detection and release e Heverse Cycle Defrosting Defrosting Sequence Heating operation e Outdoor fan e 4way valve ON Defrost detection occurs in either of the following cases he temperature of the heat exchanger remains at or below the L1 line for 3 minutes after the start of HEAT operation he temperature of the heat exchanger remains at or below the Le line for 120 minutes after the start of HEAT operation Outdoor heat exchanger temp Ambient temp Frosting area Reverse cycle defrosting operation e Compressor minute after itis stopped compressor is ON Outdoor fan OFF Indoor fan OFF 4way valve OFF e Operation lamp Repeatedly switches between red and orange illumination Releasing of defrosting e Outdoor heating exchanger temp is over 20 C e operation lasts 12 minutes maximum 2 minutes after itis stopped compressor is ON 4 way valve is OM Outdoor fan is NOTE If the air conditioner is turned off during the defrosting cycle it will continue defrosting and turn itself off after defrosting is completed 14 BI CT Peak current cut off control his function prevents the circuit breaker or fuse from operating to open the circuit This function works when electrical current has increased due to an increase in the cooling heating load or to a decrease in the power supply voltage In these cases operation frequency is
3. REFRIGERANT TUBING SIDE CEILING NUTS AND WASHERS FRESH AIR INTAKE PORT REFRIGERANT TUBING SIDE oS I D 18mm CONDENSATE DRAIN PIPING REFRIGERANT TUBING JOINT TA NARROW TUBE 270 PRESPLITTING 0D 635mm 174 5 30 REFRIGERANT TUBING JOINT WIDE TUBE CAF97 127R5l CAF98 128MR5I o d 9 52 3 8 CAF187R5 o d 12 7 1 2 3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams CAF 97 127 R5IAA Opa TEE WHT ues 3 ho 4 az TRANSFORMER E Cak p H j wa OUTDOOR UNIT 2 GRN YEL B RED 5 PLATE 5511 of hf mipis GRILLE ASSY tas haf mms IND LAMP LAMP 2 gt SPtWHT 1 n x i EE t DEMO SH 9 e WHT tt DEMO SW t WHT 2 2PC WHT 5 HUM it 2P REO 212 c SPLELK A FLAP2 o BRN SPtWHT 1 UH m 5 o EE 7 F5 T ROOM TH p 95 BLK 1 1 R OM COIL BLK 2 2 4PCWHT gt BLK E E CDNTRDLLER BLK 4 4 CDIL TH S RES ari fi sue WHT FROM Ter GRY 2 SPCGEK TRANS OUTDOOR UNIT 2 GRN YEL WHT ips POWER TERMINAL TR R TRANSF ORMER PLATE CONTROLLE mnn YEL PNK BRN BRN BLU GRY SH Hl BLK VLT 3P BLK GRY ORG v RED TEL WHT BLK GRN YEL LAMP 1 01 SPART 1 T Ww DEMO SW s gt gt 0 WHT 1 amp WHT e z 2P WHT LAMP z Ofi gt 2 gt ei BRN Hi me rate
4. C or higher 13 Cold air prevention during heating During heating fan speed is set to LL very low or stopped As the temperature of the indoor heat exchanger rises the fan speed is changed to the set speed Set fan speed At stability of operation At start of operation 25 30 Approx 40 Indoor heat exchanger temperature C NOTE he fan speed is forcibly changed to LL beginning 30 seconds after the thermostat turns At stability of operation refers to operation when the room temperature has approached the set temperature When HEAT operation starts the indoor fan is stopped until the temperature of the indoor heat exchanger reaches 20 C or higher or until the room temperature reaches 15 C or higher E Compressor discharge temperature control This function controls the operation frequency to prevent the compressor discharge temperature from rising more than a specified temperatura Compressor discharge temperature C Area Automatic capacity control When the temperature rises above Point A the operation frequency is reduced at a specified rate Area Further frequency increase is prohibited When the temperature falls below Point B prevention of a rise in frequency is released and the air conditioner operates as in a area The compressor will stop if the temperature of the compressor discharge exceeds 120 C due to shortage of gas or other reason
5. coolingheating operation the mode changes between Heating and Cooling mode according to changes in the relationship between the current room temperature and the set temperature Example of operation in AUTO mode with the set room temperature at 2290 Room temp compez Operation mode 11 NE SENSOR DRY During DRY operation the system adjusts the room temperature and fan speed according to the conditions in the room in order to maintain a comfortable room enviranment SENSOR DRY operation DRAY operation is as shown in the figure below Load COOL zone Conditions are monitored at all times when the room temperature is below 15 C DAY A The compressor operation frequency varies The indoor fan operates with 1 1 fluctuation DAY B The compressor operates at low operating frequency The indoor fan operates with 1 1 fluctuation Monitoring operation takes place when the room temperature is below 15 C or more than 3 C below the set temperatura When the monitoring range is entered the compressor stops and the indoor fan operates with 1 f fluctuation NOTE The sensor Dry operation during the Low Ambient Cooling Mode outside air temperature 15 C or lower is as follows DHY A and DRY B The compressor operates cycle of 3 minutes ON and 6 minutes OFF repeatedly B PAM oc control n order to further improve inverter performance control is switched between PYM control at l
6. 20 C BLU BRN 33 9 39 1 BLU BLK 325 374 BLK GRY 78 7 90 5 GRY RED 49 7 57 2 RED WHT YEL 155 178 oafety devices Type Internal thermal protector Operating temp 150 10 Automatic Run capacitor 2 400 Stepping motor MP24GA2 DC 12 V 400 7 Aluminium plate fin Copper tube 1 1 3 0 258 DATA SUBJECT TO CHANGE WITHOUT NOTICE CAF 187 R5IAA Controller PCB Part No CB XRV184EH Controls Microprocessor Control circuit fuse 250 V 3 15A Remote Control Unit RCS 4MHVPNW4EX Fan amp Fan Motor Type Centrifugal fan Dia and lenght 1 0 280 L 166 Fan motor model Q ty K35407 M01972 1 No of poles rpm 230 V High 2nd 3rd Low 4 950 790 700 300 Running Amps 0 27 Power input 61 Coil resistance Ambient temp 20 C BLU BRN 33 9 39 1 BLU BLK 325 374 BLK GRY 78 7 90 5 GRY RED 49 7 57 2 RED WHT YEL 155 178 safety devices Type Internal thermal protector Operating temp Open 150 10 Close Automatic Run capacitor 2 400 Stepping motor MP24GA2 DC 12 V 400 7 Aluminium plate fin Copper tube 1 1 3 0 258 DATA SUBJECT TO CHANGE WITHOUT NOTICE 1 3 Other Component Specifications CAF 97 127 R5IAA CAF 98 128 MR5IAA CAF 187 R5IAA Rating Primary AC 230 V 50 60 Hz Secondary 13 7V 0 4A Capacity 5 48 VA Coil resistance Q at 25 C Primary WHT
7. Outdoor Units 1 Checking the indoor unit Check tame unit operation Use the remote controller to operate the The rated voltage must be present between inter unit wirings 1 and 2 unit in TEST run mode To determine Connect a 5 k ohm resistor between inter unit winngs 2 and 3 When the whether the mode is currently in voltage at both ends is measured approximately 12 to 15V DC must TEST run mode check the 3 indicator be output and the multimeter pointer must bounce once every 8 lamps on the unit If all 5 are blinking seconds the current mode is TEST run Or instead of measuring the voltage you can insert an LED jig and check that the LED flickers once every 8 seconds i there are no problems with the above then check the outdoor unit e the Test run procedure refer to 5 1 How to Test Run the Air Conditioner ux the outdoor unit O trol Check items unit operation ml the rated voltage between outdoor he control panel LED red must illuminate unit terminals 1 and 2 Short circuit the outdoor unit COM terminal The compressor fan motor and 4 way valve must all turn on to the T RUN terminal f there are no problems with the above then check the indoor unit 9 Using the TEST T RUN terminals TEST T RUN terminals T RUN Testrun compressor and fan motor turn ON TEST MV Compresses time to 1 60th accelerates operation by 60 times fas
8. WHT 307 10 Secondary BRN BRN 1 8 10 Thermal cut off temp 150 C Thermistor Coil sensor TH1 DTN C583G3U TKS121B Resistance KO 0 188 0 4 Thermistor Room sensor 2 DTN C502H3T TKS128B Resistance KO 25 C 5 0 396 Thermistor Humidity sensor TH3 C7 M3 SY Resistance KO 25 C 60 RH 5 RH 31 0 Drain pump Model PC 309564003 Rating Voltage 220 240 V 50 Hz Input 14 W Total head capacity 0 4 l min Safety float switch D Model BI 1300 2725 Contact rating 230 V AC DC 0 5 A Indoor air temp sensor Indoor heat exchanger sensor 200 180 O O A O N O eo O O Resistance N Co gt Resistance O A O 10 15 20 25 30 35 40 5 Temperature N eo eo 0 10 20 30 40 50 60 70 80 90 Temperature C Humidity sensor 1000 30 35 40 45 50 55 60 65 70 75 80 85 90 Relative humidity 96 e e P Resistance 2 DIMENSIONAL DATA 70 57 5 SUSPENSION SUSPENSION BRACKET 544 7 o CEILING a LXX LZS o o MNS SS 730 FRESH AIR INTAKE SIDE SUSPENSION BRACKET ELECTRICAL COMPONENT BOX SIDE mM co SUSPENSION BOLT
9. 4 Noise Malfunction and Electromagnetic Interference 7 CHECKING ELECTRICAL COMPONENTS 7 1 Measurement of Insulation Resistance 7 2 Checking Continuity of Fuse on PCB Ass y 7 3 Checking Motor Capacitor 10 10 11 11 12 13 14 15 16 16 17 17 18 19 20 21 21 22 22 1 SPECIFICATIONS 1 1 Unit Specifications CAF 97 127 R5IAA CAF 98 128 MR5IAA 220 240 V 50 Hz Voltage 230 V Performance Capacity Air circulation High Med Low Controls Temperature controls oee catalogue with the requested matching 700 600 500 Microprocessor thermostat Control unit Wireless remote control unit Timer ON OFF 24 hours amp Daily program 1 hour OFF Fan speed and Auto 1 Hi Airflow direction Auto Air Filter Washable Anti Mold Power noise level High Med Low 53 49 46 Refrigerant tubing connections Flare type Refrigerant Narrow tube 6 35 1 4 tube diameter Wide tube 9 52 3 8 Refrigerant R410A Refrigerant tube kit Air clean filter Dimensions amp Weight Dimensions Unit Height Width Depth Optional Ceiling panel Height Width Depth Package dimensions Unit Height Width Depth Volume Ceiling panel Height Width Depth Volume Unit Net Shipping Ceiling panel Net Shipping CAF 187 R5IAA 220 240 50 Hz Voltage 230 V Performance Capacity oee cat
10. B BLINKING o OPR TMR 5RV CODE DIAGNOSIS CONTENTS ROOM TEMPERATURE SENSOR TROUBLE OR SHORT CIRCUIT IN SENSOR POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT TERMINAL PRESS F1T LOCATION INDOOR HEAT EXCHANGER TEMP SENSOR TROUBLE FOR HUMIDITY SENSOR THIS REPRESENTS SHORT CIRCUIT DETECTION ONLY 3 HUMIDITY SENSOR TROUBLE 3 INDOOR PCB FAILURE x 1 OPEN OR SHORT CIRCUIT IN SENSOR 2 POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT TERMINAL PRESS FIT LOCATION 3 OUTDOOR PCB FAILURE Dx p v ES OUTDOOR CURRENT SENSOR ERROR OUTDOOR PCB FAILURE 1 INDOOR QUTDODR COMMUNICATIONS TROUBLE S MIRING 2 AC POWER FAILURE 3 BLOWN FUSE 4 POWER RELAY FAILURE SERIAL COMMUNICATIONS TROUBLE INDOOR OR OUTDOOR PCB FAILURE M IN ine OR POWER TR FAILURE 2 OUTDOOR FAN NOT OPERATING 0 E 1 HIC CIRCUIT TROUBLE 3 INSTANTANEOUS POWER STOPPAGE 4 SERVICE VALVE NOT OPENED PDHER TR CIRCUIT TROUBLE 5 QUTOGOR FAN BLOCKED CONTINUOUS OVERLOAD OPERATION 7 COMPRESSOR FAILURE OUTDOOR FAILURE Ea OUTDOOR UNIT EXTERNAL ROM TROUBLE EXTERNAL ROM DATA FAILURE 2 QUTBOOR PCB FA LURE CURRENT PEAK CUT INSTANTANEOUS POWER STOPPAGE 2 HIC DR POWER TR FAILURE 3 OUTDODR FAILURE PAM CIRCUIT TROUBLE ACTIVE CIRCUIT TROUBLE 1 OUTDOOR PCB FAILURE 2 OUTDOOR POWER VOLTAGE TROUBLE 1 ELECTRIC EXPANSION VALVE FAILURE 2 CAPILLARY TUBE CHOKED 3 INSUFFICIENT GAS RERE TA PREVENTION E LURE 4 CONTINVOUS OVERLOAD O
11. DEX France T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728
12. PERATION 5 OUTDOOR FAN NOT OPERATING OUTDOOR PCB FAILURE bal X Ch C oOo w X e m c eic x X m M xt x m mim Io X m D INDOOR FAN OPERATION TROVBLE FAN MOTOR FAILURE 2 CONNECTOR CONTACT FAILURE 3 INDOOR PCB FAILURE See 1 4 WAY VALVE FAILURE HEAT PUMP MODELS ONLY 2 OUTDOOR PCB FAILURE GASS LOSS PREVENTION 1 SERVICE VALVE NOT OPENED 2 NSUFFICIENT GAS DC COMPRESSOR DRIVE CIRCUIT TROUBLE OPEN PHASE 2 OUTDOOR PCB FAILURE OUTDOOR DC FAN OPERATION TROUBLE 1 FAN MOTOR FAILURE 2 CONNECTOR CONTACT FAILURE 3 OUTDOOR PCB FAILURE OUTDOOR SYSTEM COMMUN CAT ONS FAILURE OUTDOOR H PRESSURE SW DLR OPERATION WIRING 2 BLOWN FUSE 3 POWER RELAY FAILURE 4 OPEN PHASE OPEN PHASE OUTDOOR OR PCB FAILURE B COMPRESSOR FAILURE it ET3 FREEZING PREVENTION OPERATION INDOOR FAN SYSTEM FAILURE 2 NSVFFICIENT GAS 3 OPERATION AT LOW TEMPERATURE 19 d e J xt m e eo i 5 T TI At i 0 e x x p rm ho ee x xps E 4 2 If the self diagnostics function fails to operate No indicators illuminate and the Check the indoor unit indoor fan does not rotate Check the power voltage Blown Is the fuse blown Normal Heplace the circuit Replace the controller board or the fuse 18 6 3 Checking the Indoor and
13. TECHNICAL DATA amp SERVICE MANUAL CAF97R5IAA CAF127R51IAA CAF187R5IAA INDOOR UNIT Technibel ny CL ti lt CAF98MR5IAA CAF128MR5IAA SPLIT SYSTEM AIR CONDITIONER 38 7106 005 38 7106 006 187851 38 7106 007 CAF98MRSIAA 38 106 015 CAF128MR5IAA 38 106 016 A 0 8180 533 1 06 2008 1 This product does not contain any hazardous substances prohibited by the RoHS Directive A N WARNING You are requestedto use RoHS compliant parts for maintenance or repair You are requested to use lead free solder IMPORTANT Please read before installation This air conditioning system meets strict safety and operating standards For the installer or service person it is important to install or service the system so that it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning Follow each installation or repair step exactly as shown Observe all local state and national electrical codes e Pay close attention to all warning and caution notices given in this manual The unit must be supplied with a dedicated electrical line AN EA This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death AN CAUTION This symbol refers to a hazard or unsafe practice which can result in personal injury or produ
14. TIMER button c At the same time press the ACL reset button once Use a pointed object such as the tip of a pen to press the ACL button e After a few seconds appears and oP 1 blinks in the remote controller display area d Release the 1HR TIMER button e Release the HIGH POWER button 2 Start Cooling mode test run by pressing the ON OFF operation button of the remote controller This starts the fan producing uncooled forced air with the 3 indicator lamps OPERATION lamp TIMER lamp and SERVICE lamp on the main unit blinking After 3minutes the system shifts into cooling operation and cool air will start to be felt Cool mode test run is unaffected by the room temperature 3 Press the ON OFF operation button of the remote controller again to stop the test run 4 Finally press the ACL reset button of the remote controller to release it from Test Run mode to return to normal mode and oP 1 will disappear from the remote controller display area IMPORTANT After the test run is completed be sure to press the ACL reset button to return to normal mode The air conditioner will not operate correctly if this is not done display HIGH POWER button ON OFF E TIMER operation utton button 6 TROUBLESHOOTING 6 1 Precaution before Performing Inspection or Repair Aiter checking the self diagnostics monitor turn the power OFF before starting inspection or repair e High capaci
15. alogue with the requested matching Air circulation High Med Low 790 660 580 Controls Temperature controls Microprocessor thermostat Control unit Wireless remote control unit Timer ON OFF 24 hours amp Daily program 1 hour OFF Fan speed and Auto 1 Hi Airflow direction Auto Air Filter Washable Anti Mold Power noise level High Med Low 54 49 46 Refrigerant tubing connections Flare type Refrigerant Narrow tube in 6 35 1 4 tube diameter Wide tube in 12 7 1 2 Refrigerant R410A Refrigerant tube kit Air clean filter Optional Dimensions amp Weight Dimensions Unit Height Width Depth Ceiling panel Height Width Depth Package dimensions Unit Height Width Depth Volume Ceiling panel Height Width Depth Volume Unit Net Shipping Ceiling panel Net Shipping 1 2 Major Component Specifications CAF 97 127 R5IAA CAF 98 128 MR5IAA Controller PCB CAF97R5I CB XRV93EH CB XRV123EH CB XMRV94EH CAF128MR5I CB XMRV124EH Controls Microprocessor Control circuit fuse 250 3 15 Remote Control Unit CAF97 127R5l RCS 4HVPN4EX CAF98 128MR5I RCS 4MHVPN4EX RCS 4MHVPNW4EX Fan amp Fan Motor Type Centrifugal fan Dia and lenght 1 0 280 L 166 Fan motor model Q ty K35407 M01972 1 No of poles rpm 230 V High 2nd 3rd Low 4 870 720 600 270 Running Amps 0 27 Power input 61 Coil resistance Ambient temp
16. by hand and then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run NOTE Depending on the system type liquid and gas lines may be either narrow or wide Therefore to avoid confusion the refrigerant tubing for your particular model is specified as narrow tube for liquid wide tube for gas When servicing Turn the power OFF at the main power board before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after the work remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced Ventilate the room during the installation or testing the refrigeration system make sure that after the installation no gas leaks are present because this could produce toxic gas and dangerous if in contact with flames or heat sources Table of Contents 1 SPECIFICATIONS 1 1 Unit specifications 1 2 Major Component specifications 1 3 Other Component specifications 2 DIMENSIONAL DATA 3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 4 FUNCTION 4 1 Operation Functions 4 2 Protective Functions 4 3 Drain Pump and Float Switch 5 TEST RUN 5 1 How to Test Run the Air Conditioner 6 TROUBLESHOOTING 6 1 Precaution before Performing Inspection or Repair 6 2 Method of Self Diagnostics 6 3 Checking the Indoor and Outdoor Units 6
17. ct or property damage If necessary get help These instructions are all you need for most installation sites and maintenance conditions If you require help for a special problem contact our sale service outlet or your certified dealer for additional instructions In case of improper installation The manufacturer shall in no way be responsible for improper installation or maintenance service including failure to follow the instructions in this document SPECIAL PRECAUTIONS During installation connect before the refrigerant system and then the wiring one proceed in the reverse orden when removing the units RZ when wiring ELECTRICAL SHOCK CAN CAUSE SEVERE AAN PERSONAL INJURY OR DEATH ONLY QUALIFIED EXPERIENCED ELECTRICIANS SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked to ensure the grounding e Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections and inadequate grounding can cause accidental injury and death Ground the unit following local electrical codes The Yellow Green wire cannot be used for any connection different from the ground connection Connect all wiring tightly Loose wiring may cause overheating at connection points and a possible fire hazard Do not allow wiring to touch the refrigerant
18. d below 1 Noise malfunction This refers to the application of high frequency noise to the signal wires resulting in abnormal signal pulses and malfunction Locations near broadcast stations where Either of the following trouble may occur The fundamental conceptis to make the there are strong electromagnetic waves 1 The unit may stop suddenly during system less susceptible to noise Locations near amateur radio short wave operation Insulate for noise or statians 2 Indicator lamps may flicker distance fram the noise source Locations near electronic sewing machines 1 Use shielded wires and arc welding machines 2 Move unit away from the noise source 2 Electromagnetic interference This refers to noise generated by high speed switching of the microcomputer and compressor This noise radiates through space and returns to the electric wiring affecting any wireless devices televisions radios etc located nearby 1 4 television or radio is located near the 1 Noise appears in the television picture 1 Select a separate power source AIG and ASC wiring or the picture is distorted Keep the A C and wiring atleast meter 2 The antenna cable for a television or 2 Static occurs in the radio sound away from wireless devices and antenna cables radio is located close to the A G and A C wiring 3 Locations where television and radio signals are weak Ghange the wireless device s antenna to a nigh sensiti
19. en done 1 test run appears blinking in the remote controller clock display area Step 2 Next press the 1 HR TIMER button once to change the display from 1 to 3 self diagnostics The display continues to blink Step 3 Finally press the ON OFF button to engage self diagnostics mode ON OFF button 1HR TIMER button he self diagnostics function utilizes the 3 indicator lamps on the main unit in combinations of ON lamps blinking lamps and OFF lamps to report the existence of sensor trouble or a protective operation The lamps blink or remain OWN for 5 seconds then turn OFF for 2 seconds 5elf diagnostics is completed when the buzzer sounds 3 short beeps A maximum of self diagnostics reports are displayed for 5 seconds each beginning with the most recent report Following this display the lamps turn OFF In order to view the self diagnostics results again press the ON OFF button again The 3lamps remain OFF if no trouble has occurred lt IMPORTANT gt After self diagnostics is completed be sure to press the ACL reset button to return to normal mode The air conditioner will not operate if this is not done ACL reset button 17 1 Self diagnostics lamps OPERATION lamp TIMER lamp OPER TIMER SERVICE lamp Since the indications cover various units the corresponding parts listed below may not be present in some models INDICATION ON ND U 3
20. ow operation speeds and PAM control at high operation speeds making the most effective use of power Ei HIGH POWER This function acts to raise the power but keeps the AC system in ihe same operating mode This function is set with the HIGH POWER button on the remote controller It can be set regardless of the temperature and fan speed settings e HIGH POWER operation from remote controller The unit operates at maximum output for 30 minutes regardless of the desired temperatura The fan speed is 1 step above High Frequency EV Start End NOTE When HIGH POWER operation ends the unit operates at low Hz for 5 minutes regardless of the thermostat OFF conditions Whenin DRY mode operationis in the cooling zona E Lamp colors OPERATION lamp HEAT operation Hed DRY operation Orange COOL operation Green FAN operation Green DEFROSTING operation Hed and Orange alternately TIMER lamp Green QUIET lamp Green ION lamp Green B Timer backup Operation stops if there are no operator controls tor 25 hours or longer after unit operation switched fram OFF to CN by use of ON timer operation 12 NIGHT SETBACK When NIGHT SETBACK operation is set the temperature and fan speed settings will be adjusted automatically to allow comfortable sleep When NIGHT SETBAGK operation is set I2 mark appears on ihe remote controller The main unit display lamp also becomes dimmer e COOL and DRY mode
21. probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin power plug Local supply Insulation tester NOTE The shape of the power plug may differ from that of the air conditioner which you are servicing Fig 1 Clip Copper Insulation tube or lester metallic part Fig 2 Copper tube or metallic part Insulation tester Fig 3 From fan motor compressor and other parts went A Metallic part Insulation tes ter _ Fig 4 21 7 2 Checking Continuity of fuse on PCB Assy Remove the PCB Ass y from the electrical Fuse component box Then pull out the fuse from the PCB Assy Fig 5 RS Check for continuity using a multimeter as shown in Fig 8 Ass y Fig 5 Fuse Fig 6 7 3 Checking Motor Capacitor Remove the lead wires from the capacitor terminals and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value Multimeter The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original position The range of deflection and deflection tme differ according to the capacity of the capacitor Compressor motor capacitor Fan motor capacitor Fig 7 22 t Technibel em te R D 28 Reyrieux BP 131 01601 Tr voux CE
22. reduced or operation is interrupted auto matically to control the electrical current tor operation When the cause of the increase in electrical current 15 rectified ihe system will resume operation in the original moda A J cooing Diy Heating Peak current cut off trips VIE Electrical current setting for COOL operation is used during DEFROST operation E Operation Cut Off Control in abnormal ambient temperature he following three protective actions are available to prevent ihe compressor from operating with abnormal loads At that time they initiate thermo off stopping the outdoor unit of the air conditioner Mode Cooling Themo off Themo on ambient temp t ambient temp Low ambient lemp 990 E 18 C cut off e Mode Heating Themo off Themo on t ambient temp t ambient temp High ambient temp gt 25 C te 2490 cut off Low ambient temp B 4 3 Drain Pump and Float Switch 3 min Compressor Drain Pump Float Switch Either in Heating or another mode or the unit is stopped when the float switch is turned ON the drain pump operates for 20 minutes minimum 5 TEST RUN 5 1 How to Test Run the Air Conditioner After turning on power to the air conditioner use the remote controller and follow the steps below to conduct the test run 1 Set the remote controller in Test Run mode a Press and hold the HIGH POWER button b Then press and hold the 1HR
23. s When the night setback mode is selected the air conditioner automatically raises the temperature setting 1 C when 30 minutes have passed after the selection was made and then another 1 C after another 30 minutes have passed regardless of the indoor temperature when night setback was selected This enables you to save anergy without sacrificing comfort This function is convenient when gentle cooling is needed Setting temperature Press the NIGHT SETBACK button HEAT mode When the night setback mode is selected the air conditioner automatically lowers the temperature setting 2 5 when 30 minutes have passed after the selection was made and then another 2 C after another 30 minutes have passed regardless of the indoor temperature when night setback was selected This enables you to save energy without sacrificing comfort This function is convenient when gentle heating is needed Setting p temperature 2 C 4 F 2 C 4 F Press the NIGHT SETBACK button 4 2 Protective Functions Overload prevention during heating During HEAT operation the temperature of the indoor heat exchanger is used to control the frequency and lessen the load on the compressor before the protective device is activated Indoor heat exchanger A Control start B Control end Indoor heat exchanger temperature C a Area Automatic capacity control b When Point A has been exceeded the operation frequency is reduced by a cer
24. tain proportion c rea Frequenoy increase is prohibited d At Point B and below overload prevention is ended and control is the same as in the a area B Freeze prevention During COOL or DRY operation freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below 1 Freeze prevention operation is engaged when the temperature of the indoor heat exchanger is below 6 C 2 Restart after freeze prevention operation occurs when the temperature of the indoor heat exchanger reaches 8 C or above indoor heat exchanger temperature C Area Automatic capacity control When temperature drops below Point the operation frequency is reduced by a certain proportion rea Frequenoy increase is prohibited When the temperature reaches Point or above freezing prevention is ended and control is the same as in the a area When the temperature drops to below 2 C continuously for 2 minutes or longer the compressor stops Once the freeze condition is detected the air conditioner will work less than the maximum frequency until it is turned off The Freeze Prevention Control during the Low Ambient Cooling Mode outside air temperature 15 C or lower 15 as follows he compressor stops when the temperature of indoor heat exchanger becomes less than 2 C he compressor restarts when the temperature of indoor heat exchanger becomes 8
25. ter than normal 3 Checking the serial communications Control 1 Control 2 X OFF iK Blinking Illuminated Short circuit terminals 2 and 4 on Short circuit terminals 2 and 4 on Initial self dia gnostics the indoor unit terminal plate the outdoor unit terminal plate me jan S ae Ios Operation OE ow EE mp X Indoor unit circuit board failure Failure open circuit contact failure eto i ri AX i in the inter unit wirings e urn the power OFF before performing short circuiting procedures i Heter to the previous pages when performing system self diagnostics e So that the check can be made quickly indicators blink at first communication after power e Before performing the above checks perform TEST run operation and check that the rated voltage is output to terminals 1 and 2 on the outdoor unit If itis not output there is a failure related to the indoor unit power P4 L Outdoor unit circuit board failure EXE 19 6 4 Noise Malfunction and Electromagnetic Interference An inverter A C operates using pulse signal control and high frequencies Therefore it is susceptible to the effects of external noise and is likely to cause electromagnetic interference with nearby wireless devices A noise filter is installed for ordinary use preventing these problems However depending on the installation conditions these effects may still occur Please pay attention to the points liste
26. tubing compressor or any moving parts of the fan Do not use multi core cable when wiring the power supply and control lines Use separate cables for each type of line When transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminium fins on the air conditioner can cut your fingers When installing ln a ceiling Make sure the ceiling is strong enough to hold the unit weight It may be necessary to build a strong wooden or metal frame to provide added support a room Properly insulate any tubing run inside a room to prevent sweating which can cause dripping and water damage to walls and floors In moist or uneven locations Use a raised concrete base to provide a solid level foundation for the outdoor unit This prevents damage and abnormal vibrations In area with strong winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a snowy area for heat pump type systems Install the outdoor unit on a raised platform that is higher then drifting snow Provide snow vents When connecting refrigerant tubing e Keep all tubing runs as short as possible Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them screw
27. ty electrolytic capacitors are used inside the outdoor unit controller inverter They retain an electrical charge charging voltage DC 310 even after the power is turned OFF and some time is required for the charge to dissipate Be careful not to touch any electrified parts before the controller LED red turns OFF If the outdoor controller is normal approximately 30 seconds will be required for the charge to dissipate However allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller 6 2 Method of Self Diagnostics Follow the procedure below to perform detailed trouble diagnostics lt Glock display gt f Test run mode oF 7 Self diagnostics mode 1 if the operation lamp blinks every 0 5 seconds immediately when the power is turned ON there is an external ROM OTP data failure on the indoor circuit board or a ROM socket insertion problem or the ROM has not been installed 2 The failure mode is stored in memory even when the power 15 not ON Follow the procedure below to perform diagnostics PROCEDURE After turning on power to the air conditioner use the remote controller and follow the steps below to execute self diagnostics Step 1 Press and hold the remote controller HIGH POVVER button and 1 TIMER button At the same time press the ACL reset button Use a pointed object such as the tip of a pen to press the ACL button When this has be
28. vity antenna Ghange the antenna cable to a BS coaxial cable Use a noise filter for the wireless device Use a signal booster 20 7 CHECKING ELECTRICAL COMPONENTS 7 1 Measurement of insulation Resistance The insulation is in good condition if the resistance exceeds 2M amp Q 7 1 1 Power Supply Wires Clamp the grounding terminal of the power plug with a lead clip of the insulation resistance tester and measure the resistance by placing a probe on both the two power terminals Fig 1 Then also measure the resistance between the grounding and other power terminals Fig 1 7 1 2 Indoor Unit Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate Fig 2 7 1 3 Outdoor Unit Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 7 1 4 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate capacitor etc Similarly disconnect the connector Then measure the insulation resistance Figs 3 and 4 NOTE Refer to Electric Wiring Diagram If the
Download Pdf Manuals
Related Search