TECHNICAL DATA & SERVICE MANUAL SPLIT SYSTEM AIR
Contents
1. 860 500 11 CD Air intake grille Air outlet 9 Refrigerant liquid line D 9 52 In case of 25 type use the tube connector Refrigerant gas line D 12 7 9 12 type D 15 88 18 25 type amp Drain connection Power supply entry For discharge duct For fresh air intake 9 Suspension bolt mounting Units mm ASR536CL ASR548CL o x 59 124 L 338 30 m lt 860 820 Ceiling opening 48 sn 757 Suspention bolt pitch gt NE Te N N D ES Ae ae JI P D 5 8 5 p T 5 x i fa d kal SE p Y 8 D 5 ci S eg 10 DI Td D i D N Y Pa o Air intake grille Air outlet Refrigerant liquid line 0 9 52 Refrigerant gas line D 19 05 Drain connection 9 Power supply entry v eJ For discharge duct For fresh air intake Suspension bolt mounting 7762. When installing In 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 In 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 Ih 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 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 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 bo
3. Set Operation selector switch to TEST in indoor unit Outdoor unit runs ls room temperature too low Try to run both indoor and outdoor units with another remote control unit Other remote control unit is defective Room sensor in remote control unit is defective C Outdoor unit is abnormal a Checkthe power supply wiring Check negative phase relay 47C Is it actuated Rewire power supply cords 22 Check the compressor motor thermal protector 49C abnormally high YES NO Check compressor motor thermal protector 49C Charge refrigerant gas Check compressor motor magnetic contactor 52C Only the outdoor fan does not run D Check the indoor unit P C B Check P C B Ass y Check voltage between terminals No 2 and No 4 on terminal plate No voltage appears P C B Ass y is defective 23 4 Indoor unit does not run The indoor fan and louver motor do not run P C B Ass y is defective 5 Some parts fail to operate 1 Only indoor fan does not run Check fan casing for foreign matter Remove foreign Fan cannot on inside matter or repair Check fan rotation be rotated Rotate fan gently once or twice by hand Check resistance of fan motor winding OK Check fan motor capacitor OK Fan motor burnout or foreign matter Repair or replace in bearing P C B as
4. 12 3 ELECTRICAL DATA 3 1 Electric Wiring Diagram IND LAMP ASSY 1 SWITCH ASSY 1 2 3 CONNECTOR 4P WHT 2P RED 2P YEL 3P WHT 7P WHT 3P RED 3P GRN COIL ROOM SW ASSY W LESS DPH LM CONTROLLER CR XR254GS SUP PRY SEC DP FS FM 7 3P WHT 5P WHT 2P WHT 2P WHT 3P BLU 3P RED COM M BRN ORG VLT WHT GRY GRN YEL BLK BLK alas ala 1 X2 X3 A4 TERMINAL PLATE 4P TO OUTDOOR UNIT POWER SUPPLY CONNECTOR GRY e e GRY BRN Av v YEL ORG GRY Ael GRN YEL 3 0 0 o PNK PNK GRN YEL r_ GRN YEL EARTH EARTH EARTH TERMINAL TERMINAL TERMINAL 13 3 2 Schematic Diagram CR XR254GS CONTROLLER fe1 amp BIEF ETIL J SYMBOLS DESCRIPTION FMI INDOOR FAN MOTOR 49FMI INDOOR MOTOR THERMAL PROTECTOR RC RUNNING CAPACITOR F01 FUSE DRAIN PUMP DEW PROOF HEATER AUTO LOUVER MOTOR POWER TRANSFORMER RY01 RY06 AUXILIARY RELAY RY08 FLOAT SWITCH THERMISTOR INDOOR
5. Timer Fan speed 3 and Auto Airflow direction Auto Remote control Air Filter Washable easy acces long life 2500 hr Operation sound High Med Low dB A 37 35 31 Refrigerant tubing connections Flare type Refrigerant Narrow tube mm in 6 35 1 4 tube diameter Wide tube mm in 15 88 5 8 Refrigerant R407C Refrigerant control Capillary tube Dimensions amp Weig Dimensions include panel Height Width Depth Package dimensions Ceiling panel Height Width Depth Volume Height Width Depth Volume Weight include panel Ceiling panel Net Shipping Net Shipping DATA SUBJECT TO CHANGE WITHOUT NOTICE ASR536CL Performance Capacity See catalogue with the requested matching Air circulation High Med Low m h Features Controls Temperature controls Microprocessor thermostat Remote Controller Wireless remote control unit Timer ON OFF 24 hours amp Daily program 1 hour OFF Fan speed 3 and Auto Airflow direction Auto Remote control Air Filter Washable easy acces long life 2500 hr Operation sound High Med Low dB A 42 39 35 Refrigerant tubing connections Flare type Refrigerant Narrow tube mm in 9 52 3 8 tube diameter Wide tube mm in 19 05 3 4 Refrigerant R407C Refrigerant control Capillary tube Dimensions amp Weight Dimensions include panel Height Width Depth Package dimensions Height Width Depth Volu
6. narrow tube YES Temperature difference Possibility of insufficient refrigerant Measure temperatures of suction and discharge air of indoor unit is small Charge refrigerant Temperature difference between suction and discharge air is large enough approx 10 deg or more Check clogging of air filter Clean filter Air filter is clogged YES Set fan speed to either s fan speed set to LOW HIGH or MEDIUM Review cooling load estimate Reduce cooling load or if performance of air conditioner replace the unit with is normal higher cooling capacity Set temperature to Set temperature is too low higher value using temperature setting button of remote control unit s remote control unit placed Chance esi of where it can detect room d cin unit temperature properly i 26 11 PCB for SCL models 002 Capacity Code LED1 LED2 O O 1 2 3 25 type OFF OFF OFF 36 type ON OFF OFF 48 type ON ON OFF Meaning of LED indication POW LED1 LED2 0005 Cause of trouble Light Off Off Light Normal state Light Flash Light Light High pressure switch is activated Outdoor fan thermal protector activated Outdoor coil thermistor is
7. supply company B Check remote control unit Try to run both indoor and outdoor units with another remote control unit Other remote control unit is defective 19 C Check Operation selector switch in the indoor unit IND LAMP Ass y or P C B gt Ass in the indoor unit is defective Has Operation selector switch been set to ON position YES Set Operation selector switch to ON Neither unit runs Switch Ass y or P C B Ass y in the indoor unit is defective D Check compressor motor protectors a High pressure switch 63PH SERRE itch Disconnect the socket from the 2P WHT connector ecr nign pressure Check the continuity between the No 1 and No 2 poles Is high pressure switch actuated 63PH of the socket Is outdoor heat exchanger coil dirty or are there YES Clean heat exchanger coil obstruction near air suction or remove obstructions inlet of outdoor unit Check if outdoor fan rotates Refer to Only outdoor fan does not run b Compressor motor overcurrent relay Check compressor motor NO overcurrent relay 51C Refer to CHECKING ELECTRICAL COMPONENTS Is it actuated Electro magnetic contactor Consult power supply company W and restore voltage to normal value Check power supply voltage YES Is voltage 90 of rated voltage or less NO 90 of rated voltage or
8. WHT PNK 42 7 YEL BLK 58 Safety devices Type Internal thermal protector Operating temp Open 130 8 Close 79 15 6 440 ASG3648E M2LB24ZA12 rating 240 VAC rpm 2 5 nominal output W 3 coil resistance 25 C kQ 15 62 15 240 V 26W Aluminium plate fin Copper tube 2 1 5 0 556 DATA SUBJECT TO CHANGE WITHOUT NOTICE 1 3 Other Component Specifications ATR II215TA Rating Primary VAC 230V 50Hz Secondary 10 6V 0 93A Capacity 7 VA Coil resistance WHT WHT 96 5 BRN BRN 0 8 at 20 C Thermal cut off temp 150 C Thermistor Coil sensor PBC 41E S14 Resistance 10 23 7 5 5 18 8 5 0 15 0 5 5 12 1 5 10 9 7 5 15 8 0 5 Thermistor Room sensor TH1 KTEC 35 S6 Resistance 0 C 16 5 5 5 12 8 5 10 10 0 5 20 6 3 5 30 C 4 0 5 40 2 7 5 45 2 2 5 50 1 8 5 55 1 5 5 Model PJV 1434A Rating Voltage 230V Input 12W Total head capacity 500 mm 400 cc min Safety float switch fl ui ia Model FS 0218 102 Contact rating DC 5 50W 10 2 DIMENSIONAL DATA ASR525CL X view 124 820 Ceiling opening 757 Suspention bolt pitch 377 Panel center 820 Ceiling opening 66 Suspention bolt pitch
9. more Following causes may be considered Locked rotor of compressor Overcharged refrigerant Insufficient air for outdoor unit ventilation Obstruction in front of outdoor unit 20 E Check the auxiliary relay 1Y or 2Y Check coil resistance of auxiliary relay 1Y or 2Y F Check the indoor fan motor thermal protector 49FMI Disconnect the socket from the 9P WHT connector Check the continuity between No 8 and No 9 poles of the 9P socket No continuity Thermal protector 49FMI is actuated Check fan casing Remove foreign Check fan rotation E a Rotate the fan gently once or twice by hand Fan motor burnout as or foreign matter Repair or replace Check fan motor capacitor in bearing G Check the fuse on the P C B Ass y in the indoor unit Check fuse on P C B Check resistance of louver Ass y in indoor unit for motor winding LM continuity When the fuse blows Check coil of compressor motor magnetic contactor 52C Check transformer TR Check resistance of indoor fan motor winding P C B Ass y is defective FMI 21 3 Outdoor unit does not run A Check the COOL FAN selector switch in the remote control unit Is COOL FAN selector switch NO set to COOL m Set to COOL B Check the set temperature Try to lower set temperature using temperature setting button COOLER
10. unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal Clip screw where power supply lines are connected on the Copper terminal plate fig 2 tube or metallic part 6 1 3 Outdoor 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 each terminal screw on the terminal plate fig 2 Note that the ground line terminal should be skipped Clip for the check Copper tube or metallic part 6 1 4 Measurement of Insulation Resistance for Electrical Parts Se Disconnect the lead wires of the desired electric From fan motor part from terminal plate capacitor etc Similary disconnect the connector Then measure the insulation resistance fig 3 and 4 Metallic NOTE Refer to electric wiring diagram Clip If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin Insulation tester 29 6 2 Checking Continuity of Fuse on PCB Ass y Fuse Remove the PCB Ass y from the electrical component box Then pull out the fuse from the PCB Ass y fig 5 PCB Ass y Check for continuity using a multimeter as shown in fig 6 S Fig 5 Fuse V Fig 6 6 3 Checking Motor Capacitor Remove the lead wires from the capacitor terminals and then place a probe on the capacito
11. COIL ROOM THERMISTOR INDOOR CONTROLLER INDICATOR LAMP ASSY SWITCH ASSY TERMINAL PLATE CONNECTOR TERMINAL 14 4 FUNCTIONS 4 1 Room temperature control Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit The room temperature and other information is transmitted every 5 minutes by the remote control unit to the controller in the indoor unit Signal from remote control unit 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes Thermo Thermo Thermo Thermo Thermo Thermo Thermo OFF ON OFF ON ON ON OFF T 1 C ae settemp T C than minutes 5 minutes 3 minutes Room temp Compressor ON Joer Outdoor fan ON Indoor fan Set speed The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least 3 minutes To protect the compressor from stalling out when trying to start against the high side refrigerant pressure the control circuit has a built in automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF not before than 5 minutes of compressor operation Thermo ON When the room temperature is above T 1 C T C is set temperature Compressor ON Thermo OFF When th
12. HT VLT 18 1 VLT ORG 43 2 ORG YEL 43 2 WHT PNK 83 5 YEL BLK 60 2 Safety devices Type Internal thermal protector Operating temp Open 130 8 79 15 4 5 440 ASG25SCE M2LB24ZA12 rating 240 VAC rpm 2 5 nominal output W 3 coil resistance 25 C kQ 15 62 15 240 V 26W Aluminium plate fin Copper tube 2 1 5 0 343 DATA SUBJECT TO CHANGE WITHOUT NOTICE ASR536CL Controller PCB Part No CR XR254GS Controls Microprocessor Fan amp Fan Motor Centrifugal fan Diameter 1 0443 Fan motor model Q ty SFG6X 81A6P 1 No Of poles rpm 230 V High 6 530 0 765 38 Coil resistance Ambient temp 20 C BRN WHT 75 1 WHT VLT 6 7 VLT ORG 20 6 ORG YEL 27 4 WHT PNK 42 7 YEL BLK 58 Safety devices Type Internal thermal protector Operating temp Open 130 8 Close 79 15 5 440 ASG3648E M2LB24ZA12 rating 240 VAC rpm 2 5 nominal output W 3 coil resistance 25 C kQ 15 62 15 240 V 26W Aluminium plate fin Copper tube 2 1 5 0 556 DATA SUBJECT TO CHANGE WITHOUT NOTICE ASR548CL Controller PCB Part No CR XR254GS Controls Microprocessor Centrifugal fan Diameter 1 0443 Fan motor model Q ty SFG6X 81A6P 1 No Of poles rpm 230 V High 6 530 0 871 51 9 Coil resistance Ambient temp 20 C BRN WHT 75 1 WHT VLT 6 7 VLT ORG 20 6 ORG YEL 27 4
13. TECHNICAL DATA amp SERVICE MANUAL INDOOR UNIT ASR525CL ASR536CL ASR548CL SPLIT SYSTEM AIR CONDITIONER Ss N DA D V 0 8180 365 0 10 2004 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 e Carefully read this instruction booklet before beginning e Follow each installation or repair step exactly as shown Observe all local state and national electrical codes Pay close attention to all warning and caution notices given in this manual The unit must be supplied with a dedicated electrical line AA GEN This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death CAUTION This symbol refers to a hazard or unsafe practice which can result in personal injury or product 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
14. age are correctly connected between the indoor unit and outdoor unit Single phase outdoor unit 3 phase outdoor unit Indoor Unit Outdoor Unit Indoor Unit Outdoor Unit B B D D D 1 2 2 2 2 D amp 4 2 Power supply 4 4 Power supply Inter Unit O L Inter Unit 1 Wiring N Wiring 12 Line voltage 1 0 Line voltage NS CSS DEED CREE C3 L3 Ground oqo 0611_X_S or J Ground 3 Check the power supply Check that the voltage is within the specified range 10 of the rating Check that power is supplied WARNING If the following troubleshooting must be done with the power being supplied take care not to touch any uninsulated live parts that will given an ELECTRIC SHOCK 4 Check the lead wires and connectors in indoor and outdoor units Check that the sheaths of the lead wires are not damaged Check that the lead wires are firmly connected to the terminal plate Check that the wiring has been performed correctly 5 Reference Condition of general cooling operation Thermo ON Indoor fan speed HIGH 17 2 Air conditioner does not operate 1 Circuit breaker trips or fuse blows a When the circuit breaker is set to ON it trips immedialely There is a possibility of ground fault Check insulation resistance If the resistance value is 1 or less insulation
15. ard 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 Diagram 3 1 Schematic Diagram 4 FUNCTION 4 1 Room Temperature Control 4 2 Freeze Prevention 5 TROUBLESHOOTING 6 CHECKING ELECTRICAL COMPONENTS 6 1 Measurement of Insulation Resistance 6 2 Checking Continuity of Fuse on PCB Ass y 6 3 Checking Motor Capacitor 6 4 Thermistor Characteristic Curve 1 SPECIFICATIONS 1 1 Unit Specifications ASR525CL 220 240V 50Hz Voltage rating 230V Performance Capacity See catalogue with the requested matching Air circulation High Med Low m h 1140 1020 840 Features Controls Temperature controls Microprocessor thermostat Remote Controller Wireless remote control unit ON OFF 24 hours amp Daily program 1 hour OFF
16. e room temperature is equal to or below set temperature T C Compressor OFF 15 4 2 Freeze Prevention This function prevents freezing of the indoor heat exchange coil When the compressor has been running for 6 minutes or more and the temperature of the indoor heat exchange coil falls below 0 8 C the control circuit stops the compressor for at least 3 minutes The compressor does not start again until the temperature rises above 8 C or 6 minutes has elapsed Thermo OFF Room temp Thermo ON T 1 C Set temp T C Indoor heat exch More than 0 8 C A ae More than 6 minutes Compressor ON OFF 16 5 TROUBLESHOOTING 1 Check before and after troubleshooting Many problems may occur because of wiring or power supply problems and so you should check these areas first Problems here can cause incorrect results in some of the other tests and so they should be remedied first 1 Check power supply wiring a Single phase Check that the power supply wires are correctly connected to terminal No 1 through No 4 on the 4P terminal plate on the indoor unit and L and N on the 6P terminal on the outdoor unit b 3 phase Check that the power supply wires are correctly connected to terminal No 1 through No 4 on the terminal plate on the indoor unit and L1 through L3 and on the 8P terminal on the outdoor unit 2 Check the inter unit wiring Check that the inter unit control wires AC 220 240 V Line volt
17. 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 BEE wren wiring ELECTRICAL SHOCK CAN CAUSE SEVERE Ka 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 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 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
18. is defective Example power line power line Set the circuit breaker to OFF D Remove power supply cords from terminal plate in outdoor unit Rewire Check insulation resistance of power supply cords 2 Remove inter unit power line from terminal plate in outdoor Insulation of Check insulation unit outdoor unit resistance of Check insulation resistance is defective electrical parts of outdoor unit in outdoor unit Remove inter unit power line from terminal plate in indoor Insulation of Check insulation unit indoor unit resistance of Check insulation resistance is defective electrical parts of indoor unit in indoor unit Inter unit power lines is defective Rewire 18 b Circuit breaker trips in several minutes after turning the air conditioner on There is a possibility of short circuit Check capacity of circuit breaker Replace it with a suitable one larger capacity Is capacity of circuit breaker sufficient Check resistance of outdoor fan motor winding Check resistance of compressor motor winding Check resistance of louver motor winding Neither indoor unit nor outdoor unit runs A No power is supplied Circuit breaker is tripped Reset the breaker Check power supply Is power being supplied to outdoor unit Wait for power to be restored or consult power Power failure
19. me Ceiling panel Height Width Depth Volume Weight include panel Net Shipping Ceiling panel Net Shipping DATA SUBJECT TO CHANGE WITHOUT NOTICE ASR548CL Performance Capacity See catalogue with the requested matching Air circulation High Med Low m h Features Controls Temperature controls Microprocessor thermostat Remote Controller Wireless remote control unit Timer ON OFF 24 hours amp Daily program 1 hour OFF Fan speed 3 and Auto Airflow direction Auto Remote control Air Filter Washable easy acces long life 2500 hr Operation sound High Med Low dB A 42 39 35 Refrigerant tubing connections Flare type Refrigerant Narrow tube mm in 9 52 3 8 tube diameter Wide tube mm in 19 05 3 4 Refrigerant R407C Refrigerant control Capillary tube Dimensions amp Weight Dimensions include panel Height Width Depth Package dimensions Height Width Depth Volume Ceiling panel Height Width Depth Volume Weight include panel Net Shipping Ceiling panel Net Shipping DATA SUBJECT TO CHANGE WITHOUT NOTICE 1 2 Major Component Specifications ASR525CL Controller PCB Part No CR XR254GS Controls Microprocessor Fan amp Fan Motor Centrifugal fan Diameter 1 0443 Fan motor model Q ty SFG6X 41D6P 1 No Of poles rpm 230 V High 6 470 0 611 31 4 Coil resistance Ambient temp 20 C BRN WHT 170 3 W
20. open or short Light Off Light Light Low pressure switch is activated Light Off Light Off Negative phase Defective phase 27 12 Defective Sensor 1 Indoor heat exchanger coil temp Sensor is defective a Open No continuity in sensor Compressor and outdoor fan repeatedly go ON for 10 minutes and OFF for 6 minutes when sensor opens b Short Freeze Prevention does not operate when dehumidified water is frozen on the indoor coil 2 Room temp Sensor in the remote control unit is defective a Open No continuity in sensor Neither the outdoor fan nor compressor runs b Short The outdoor fan and compressor do not stop Excessive cooling 28 6 CHECKING ELECTRICAL COMPONENTS 6 1 Measurement of Insulation power plug Resistance Local supply The insulation is in good condition if the resistance exceeds 1MQ Insulation tester NOTE The shape of the power plug may differ from that of the air conditioner which you are servicing 6 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 Terminal plate on both the two power terminals fig 1 Then also measure the resistance between the GIE grounding and other power terminals fig 1 6 1 2 Indoor Unit Clamp a metallic part of the
21. r 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 time differ according to the capacity of the capacitor capacitor Fan motor capacitor Fig 7 30 6 4 Thermistor Characteristic Curve Resistance Room temp sensor a wo A O N co O 35 10 15 20 25 30 Temperature C 35 40 Resistance 31 40 35 30 25 20 D Coil sensor PBC 41E 20 15 10 5 0 5 gt Temperature C 10 15 20 argocrciima s p a Via Varese 90 21013 Gallarate Va Italy Tel 39 0331 755111 Fax 39 0331 776240 www argoclima it
22. sy is defective 2 Only louver motor does not run Check resistance of louver motor winding OK P C B Ass y or remote control unit is defective 24 6 Outdoor fan does not run Check fan casing for foreign matter Fan cannot on the inside Check fan rotation be rotated Rotate fan gently once or twice by hand Remove foreign matter or repair Fan motor burnout Repair or replace or foreign matter in bearing Check resistance of fan motor winding OK Check fan motor capacitor Check continuity between terminals on compressor motor magnetic contactor 7 Outdoor fan speed is not switched from High to Low even when the outdoor temperature falls below 25 5 C Check thermostat 23S Check coil resistance of auxiliary relay 1 Y 8 Compressor does not run Check compressor motor capacitor OK Check resistance of compressor motor winding OK Check compressor motor overload relay OK Check continuity between terminals R U and Replace magnetic then S V on the magnetic contactor contactor 25 9 10 Excessive cooling Poor cooling Check position of remote control unit YES Change position of Does cool air from air condi remote control unit tioner reach remote control unit directly Is wide tube between indoor unit NO Insulate wide tube and and outdoor unit insulated then execute taping with
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