Technibel GR250R5TAA Technical & Service Manual Download Page 21

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Temperature Indoor air intake temp. Outdoor air intake temp.

Cooling

Maximum 35

C DB / 25

C WB 45

C DB

Minimum 17

C DB / 14

C WB – 5

C DB

Heating

Maximum 27

C DB / — WB 21

C DB / 15.5

C WB

Minimum 15

C DB / — WB –15

C DB / — WB

1. SPECIFICATIONS

1-6

Operating Range

Summary of Contents for GR250R5TAA

Page 1: ...TECHNICAL SERVICE MANUAL SPLIT SYSTEM AIR CONDITIONER SPLIT SYSTEM AIR CONDITIONER SPA250R5TAA GR250R5TAA SPA250R5TAA GR250R7TAA SPA360R5TAA GR360R7TAA SPA480R5TAA GR480R7TAA 0 8180 111 1 05 01...

Page 2: ...Fan Speed Control 34 A Cooling 34 B Heating 34 2 5 Freeze Prevention Cooling 35 2 6 Condensing Temperature Control Cooling 36 2 7 Overload Protection Heating 37 2 8 Discharge Temperature Control Cool...

Page 3: ...DATA 49 3 1 Electrical Characteristics 49 3 2 Electric Wiring Diagrams Schematic Diagrams 53 A Indoor Unit 53 B Outdoor Unit 55 4 SERVICE PROCEDURES 63 4 1 Troubleshooting 63 4 2 Checking the Electric...

Page 4: ...ve Drain pump drain connection No 20A OD26mm Compressor Rotary Operation sound Indoor Hi Me Lo dB A 45 41 37 Outdoor Hi dB A 52 REFRIGERANT TUBING Limit of tubing length m ft 50 164 Limit of tubing le...

Page 5: ...in pump drain connection No 20A OD26mm Compressor Rotary Operation sound Indoor Hi Me Lo dB A 45 41 37 Outdoor Hi dB A 52 REFRIGERANT TUBING Limit of tubing length m ft 50 164 Limit of tubing length a...

Page 6: ...p drain connection No 20A OD26mm Compressor Rotary Operation sound Indoor Hi Me Lo dB A 47 43 39 Outdoor Hi dB A 53 REFRIGERANT TUBING Limit of tubing length m ft 50 164 Limit of tubing length at ship...

Page 7: ...p drain connection No 20A OD26mm Compressor Scroll Operation sound Indoor Hi Me Lo dB A 48 44 40 Outdoor Hi dB A 55 REFRIGERANT TUBING Limit of tubing length m ft 50 164 Limit of tubing length at ship...

Page 8: ...1 ORG YEL 70 9 Ambient temperature 20 C WHT VLT 43 6 WHT PNK 15 6 VLT ORG 27 0 Safety device Operating temperature Open C 130 5 C Close C Differential 15 deg min Run capacitor VAC F 440 V 2 5 F Elect...

Page 9: ...Ambient temperature 20 C WHT VLT 16 6 VLT PNK 40 8 VLT ORG 24 5 Safety device Operating temperature Open C 130 5 C Close C Differential 15 deg min Run capacitor VAC F 440 V 4 0 F Electronic refrigeran...

Page 10: ...Ambient temperature 20 C WHT VLT 16 6 VLT PNK 40 8 VLT ORG 24 5 Safety device Operating temperature Open C 130 5 C Close C Differential 15 deg min Run capacitor VAC F 440 V 4 5 F Electronic refrigeran...

Page 11: ...87 11 Crank case heater 240 V 25 W Refrigerant amount at shipment kg R 22 3 0 High pressure switch ACB 1TB07 Set pressure OFF kg cm2 30 ON kg cm2 24 2 0 Fan Propeller Number diameter mm 1 460 Fan spe...

Page 12: ...Open C 120 5 Close C 98 11 Crank case heater 240 V 25 W Refrigerant amount at shipment kg R 22 3 0 High pressure switch ACB 1TB07 Set pressure OFF kg cm2 30 ON kg cm2 24 2 0 Fan Propeller Number diam...

Page 13: ...25 W Safety devices Overload relay models Internal type Operating temperature Open C 120 5 130 Close C 98 11 61 Refrigerant amount at shipment kg R 22 3 5 R 22 4 5 High pressure switch ACB 1TB07 Set p...

Page 14: ...41E S14 PBC 41E S36 PBC 41E S4 Coil resistance k 10 C 23 7 10 C 9 7 5 C 18 8 20 C 6 5 0 C 15 0 30 C 4 4 5 C 12 1 40 C 3 1 45 C 2 6 Thermistor Room or coil sensor KTEC 35 S6 PTC 51H S1 Coil resistance...

Page 15: ...C 41E S35 PBC 41E S36 PBC 41E S4 Coil resistance k 10 C 23 7 10 C 9 7 5 C 18 8 20 C 6 5 0 C 15 0 30 C 4 4 5 C 12 1 40 C 3 1 45 C 2 6 Thermistor Room or coil sensor KTEC 35 S6 PTC 51H S1 Coil resistanc...

Page 16: ...0 1190 40 221 40 40 35 35 36 125 C B 330 60 8 9 110 TUBING FOR SIDE 181 58 291 588 626 670 29 38 Dimension mm Refrigerant gas line Refrigerant liquid line Drain connection D E A Wide tube Narrow tube...

Page 17: ...280 307 940 Dimension mm Hole for anchor bolt 4 13 Refrigerant tube joint narrow tube Flare connection 1 4 in 6 35 mm Refrigerant tube joint wide tube Flare connection 5 8 in 15 88 mm Refrigerant tubi...

Page 18: ...580 607 940 Dimension mm Hole for anchor bolt 4 13 Refrigerant tube joint narrow tube Flare connection 3 8 in 9 52 mm Refrigerant tube joint wide tube Flare connection 3 4 in 19 05 mm Refrigerant tub...

Page 19: ...break or crack HP High pressure switch Compressor Accumulator Accumulator EC P Heat exchanger 4 way valve EC P Heat exchanger Distributor Electronic ref control valve Strainer Liquid line nipple Liqu...

Page 20: ...door Unit GR360R7TAA Indoor Unit SPA360R5TAA GR480R7TAA SPA480R5TAA Insulation Thickness Min 8mm Wide tube Narrow tube Thickness Min 8mm 0132_C_I HP High pressure switch Compressor Accumulator Hot equ...

Page 21: ...air intake temp Outdoor air intake temp Cooling Maximum 35 C DB 25 C WB 45 C DB Minimum 17 C DB 14 C WB 5 C DB Heating Maximum 27 C DB WB 21 C DB 15 5 C WB Minimum 15 C DB WB 15 C DB WB 1 SPECIFICATIO...

Page 22: ...23 SHC 4 8 4 6 4 5 4 3 4 1 17 25 SHC 5 4 5 2 5 1 4 9 4 7 27 SHC 6 5 8 5 7 5 5 5 3 29 SHC 6 6 6 4 6 3 6 1 5 9 31 SHC 7 2 7 6 9 6 59 6 18 TC 7 88 7 6 7 3 6 94 6 54 CI 2 57 2 75 2 95 3 04 3 13 21 SHC 3 5...

Page 23: ...9 3 7 3 5 23 SHC 4 8 4 6 4 5 4 3 4 1 17 25 SHC 5 4 5 2 5 1 4 9 4 7 27 SHC 6 5 8 5 7 5 5 5 3 29 SHC 6 6 6 4 6 3 6 1 5 9 31 SHC 7 2 7 6 9 6 59 6 18 TC 7 88 7 6 7 3 6 94 6 54 CI 2 19 2 35 2 52 2 58 2 64...

Page 24: ...5 2 23 SHC 7 6 8 6 6 6 4 6 1 17 25 SHC 8 7 7 7 5 7 3 7 27 SHC 8 9 8 7 8 4 8 2 7 9 29 SHC 9 8 9 6 9 3 9 1 8 8 31 SHC 10 7 10 5 10 11 9 57 8 98 TC 11 45 11 03 10 6 10 07 9 5 CI 2 27 2 43 2 61 2 79 2 97...

Page 25: ...8 7 8 4 8 7 6 17 25 SHC 10 9 7 9 4 9 8 7 27 SHC 11 10 7 10 4 10 1 9 7 29 SHC 12 11 7 11 4 11 1 10 7 31 SHC 13 1 12 8 12 4 12 1 11 7 TC 15 12 14 57 14 13 3 12 54 CI 3 93 4 21 4 52 4 42 4 33 21 SHC 6 6...

Page 26: ...acity Integrated capacity is instantaneous capacity less the effect of frost on the outdoor coil and the drop of performance during defrost cycle 15 C 20 C 25 C 140 120 100 80 60 25 C 20 C 15 C 140 12...

Page 27: ...A NC 34 CONDITION Distance 1m Under the unit 1m SOURCE 220 230 240 V 1 Phase 50 Hz NC 70 NC 50 NC 60 NC 40 NC 30 NC 20 OCTAVE BAND SOUND PRESSURE LEVEL dB 0dB 0 0002 bar BAND CENTER FREQUENCIES Hz 05...

Page 28: ...m NOTE To evaluate Noise level the maximum number of the measured OCTAVE BAND SOUND PRESSURE LEVEL is used Read the number on each BAND CENTER FREQUENCIES horizontal axis ranging from 63Hz to 8000Hz a...

Page 29: ..._T_I 7 8 9 10 70 50 30 30 15 0 AXIS AIR VELOCITY 1 2 3 4 5 6 1 2 3 4 HORIZONTAL DISTANCE m AXIS AIR VELOCITY m s VERTICAL DISTANCE m 7 8 9 10 70 50 30 30 15 0 AXIS AIR VELOCITY 1 2 3 4 5 6 1 2 3 HORIZ...

Page 30: ...Control MORE THAN 3 MINUTES MORE THAN 5 MINUTES ON ON ON ON ON ON SET SPEED OFF OFF OFF OFF ON ON ON ON ON ON DRAIN PUMP DEW PROOF HEATER BODY SENSOR 0671_X_S THERMO OFF Chart Summary and Explanation...

Page 31: ...C Compressor OFF When set on body sensor NOTE In case of Body sensor operating temperature is shifted to setting temperature 4 C Fig 2 THERMO ON THERMO ON 1 C OFF OFF 2 1 Refer to 2 4 Outdoor Fan Spe...

Page 32: ...operates in L instead of LL for 3 seconds as it starts to give the fan an initial boost Chart Summary and Explanations The main idea of this chart is to show that the indoor fan speed increases and ge...

Page 33: ...step during the time Fig 4 2 3 Automatic Fan Speed Indoor Unit A Cooling By pressing the FAN SPEED button on the remote controller the fan speed can be set at one of four steps AUTO HI MED or LO When...

Page 34: ...s sudden surge of power may be necessary The outdoor fan operates in H mode for 3 minutes after the compressor stops excluding defrosting operation period Charts below show how the outdoor fan speed c...

Page 35: ...re sensed at either of the two sensors Chart Explanations and notes This chart shows when the electronic refrigerant control valve opens to regulate the temperature of the indoor unit coil to prevent...

Page 36: ...control valve react to coil temperature to control condensing temperature Sensor C2 is located in the middle of the outdoor unit heat exchange coil When C2 rises above 60 C the electronic refrigerant...

Page 37: ...e middle of the indoor unit heat exchange unit When sensor E2 rises above 62 C the control circuit stops the outdoor fan motor till the temp drops to 55 C Fuzzy control controls the electronic refrige...

Page 38: ...o Mode for Automatic Heating Cooling Switching When the AUTO mode is selected the microprocessor calculates the difference between the set temperature and the room temperature and automatically switch...

Page 39: ...5 C 22 0 5 during the cooling operation at the room temperature 20 C set by the remote controller the operation changes to cooling When the room temperature lowers below 17 C 18 1 0 thereafter the op...

Page 40: ...lationship between the temperature of the outdoor heat exchanger coil and the outdoor temperature so it can defrost when necessary Occurs either when the temperature of C1 the outdoor heat exchanger c...

Page 41: ...the first 3 minutes after power is applied the 4 way valve remains OFF and the compressor will not operate even if the ON button is pushed If the 4 way valve is turned OFF with the compressor operati...

Page 42: ...topped under the operation of AUTO mode condition 4 way valve delays its switching for 30 50 seconds after compressor has been turned ON 0446_M_S Fig 17 SOLENOID COIL 4 WAY VALVE COMPRESSOR COOL AUTO...

Page 43: ...tc These control circuits work automatically to send just the right amount of refrigerant through the Electronic Refrigerant Control Valve 2 14 Compressor Discharge Gas Temperature Model Min open Max...

Page 44: ...s greater than the rated current value ls and continues for 2 seconds both compressor and outdoor fan stop Thermostat OFF After 3 minute pause if the air conditioner is ready for Thermostat ON it star...

Page 45: ...minutes when it is in the B range to select the best operation mode Fig 19 Fig 20 A range When the room temperature is in this range cooling operation starts However when the temperature is below 18...

Page 46: ...nged the unit starts to search flap position if a search action for sensing flap position is not succeeded in one minute only the swing is operated 2 17 Auto flap Control Auto flap can control the air...

Page 47: ...ng indoor unit coil E1 temperature located at the outlet of coil 2 Fuzzy control optimal refrigerant flow rate control By outputting the fuzzy estimation result corresponding to the fuzzy input variab...

Page 48: ...Detection Control When the power voltage falls below 160 V voltage between N phase and each phase or rises above 260 V the P2 alarm is issued to protect the compressor and electrical components 2 PROC...

Page 49: ...Hz Rating conditions A 0 43 0 43 0 62 0 65 13 68 13 92 14 73 15 00 kW 0 09 0 10 0 13 0 15 2 89 2 95 3 11 3 20 Full load conditions A 0 43 0 43 0 62 0 65 15 78 15 72 16 83 16 80 kW 0 09 0 10 0 13 0 15...

Page 50: ...phase 50 Hz Rating conditions A 0 43 0 43 0 62 0 65 4 46 4 08 4 8 4 43 kW 0 09 0 10 0 13 0 15 2 50 2 52 2 72 2 77 Full load conditions A 0 43 0 43 0 62 0 65 4 98 4 57 5 33 4 93 kW 0 09 0 10 0 13 0 15...

Page 51: ...Performance at 220 240V 1 phase 50 Hz 380 415V 3 phase 50 Hz Rating conditions A 0 86 0 90 1 24 1 31 4 66 4 40 5 36 5 13 kW 0 18 0 20 0 26 0 29 2 73 2 74 3 16 3 23 Full load conditions A 0 86 0 90 1...

Page 52: ...Performance at 220 240V 1 phase 50 Hz 380 415V 3 phase 50 Hz Rating conditions A 0 95 0 98 1 24 1 31 7 76 8 12 8 47 8 85 kW 0 20 0 22 0 26 0 29 4 29 4 52 4 75 5 03 Full load conditions A 0 95 0 98 1...

Page 53: ...X253GH T6 WHT E R VCC WHT RN2 WHT N R RN3 WHT N H L LL FM1 WHT HH T20 GRY 3 1 2 1 2 3 1 1 Power Supply Unit Control Line Terminal Plate 8P To Remote Control Switch 2 3 U1 U2 R1 R2 R3 GRN YEL BLK BLU...

Page 54: ...RY1 DPH LM LL L HH H R MOV Symbols Description FMI 49FI RC1 F1 LM TR1 1X 3X RY1 RY2 MOV RCS TH1 TH2 Indoor Fan Motor Indoor Motor Thermal Protector Running Capacitor Fuse Auto Louver Motor Power Tran...

Page 55: ...BRN BRN BRN YEL C S R BLK WHT RED GRN YEL Power Supply To Indoor Unit Terminal Plate 6P Terminal Plate 2P 2 1 BRN GRN YEL RED BLK BLK BLU PNK ORG GRY BRN BRN GRY BLK WHT VLT PNK RED BRN BLU BLU BRN B...

Page 56: ...Contactor Outdoor Fan Motor Thermal Protector High Pressure Switch Current Transmitter Running Capacitor Power Transformer Crank Case Heater Four Way Valve Fuse Thermistor Outdoor Coil C1 Thermistor...

Page 57: ...r 2P YEL RC2 S 7 BRN BRN BRN YEL R S T BLU GRY GRY WHT RED GRN YEL Power Supply To Indoor Unit Terminal Plate 8P Terminal Plate 2P 52C 2 1 WHT BRN BLU GRN YEL RED BLK BLK BLU PNK ORG GRY BRN BRN GRY W...

Page 58: ...or Motor Termal Protector Outdoor Fan Motor Thermal Protector High Pressure Switch Current Transmitter Running Capacitor Power Transformer Crank Case Heater Four Way Valve Fuse Thermistor Outdoor Coil...

Page 59: ...ower Supply To Indoor Unit Terminal Plate 8P L1 L2 L3 N Terminal Plate 2P 52C 2 1 WHT BRN BLU GRN YEL RED BLK BLK BLU PNK ORG GRY BRN BRN WHT VLT PNK RED BRN BLU BLU BRN WHT VLT BLU BLU BRN WHT WHT WH...

Page 60: ...ic Contactor Compressor Motor Termal Protector Outdoor Fan Motor Thermal Protector High Pressure Switch Current Transmitter Running Capacitor Power Transformer Crank Case Heater Four Way Valve Fuse Th...

Page 61: ...erminal Plate 2P 52C 2 1 WHT BRN BLU GRN YEL RED BLK BLK BLU PNK ORG GRY BRN BRN GRY WHT VLT PNK RED BRN BLU BLU BRN WHT VLT BLU BLU BRN WHT WHT WHT GRN YEL 49FO2 FMO1 PNK BRN GRY GRY WHT VLT YEL 2 1...

Page 62: ...Motor Magnetic Contactor Outdoor Fan Motor Thermal Protector High Pressure Switch Current Transmitter Running Capacitor Power Transformer Crank Case Heater Four Way Valve Fuse Thermistor Outdoor Coil...

Page 63: ...heating and Poor Cooling Under each heading you will find the main things that can go wrong and cause either of these problems Sometimes you can start with this chart and find the problem right away b...

Page 64: ...V 3 3 3 3 3 Check power supply Check that voltage is within the specified range 10 of the rating Check that power is being supplied If the following troubleshooting must be done with power being supp...

Page 65: ...minal No 5 through No 8 on the 8P terminal plate in the outdoor unit Check the power supply wires are correctly connected between terminal No 1 and 2 on the 3P terminal plate in the indoor unit and te...

Page 66: ...etting temp suitable Change the setting temp Is cooling load too heavy Review cooling load estimate 4 way valve is defective Replace the 4 way valve Refrigerant shortage Charge refrigerant gas Refrige...

Page 67: ...Compressor is defective Open the valves fully Air filter is clogged Clean the filter Not enough air circulation Is fan speed set to LOW Set the fan speed to either MEDIUM or HIGH Refrigerant tubes bet...

Page 68: ...stand by lamp Error receiving of serial communications signal Error transmitting of serial communications signal Indoor unit address setting is duplicated Remote controller address RCU ADR is duplicat...

Page 69: ...Heat stand by lamp Indoor thermistor is either open or short Outdoor thermistor is either open or short Protective device for compressor is activated Indoor coil temp E1 TH2 cannot be detected Indoor...

Page 70: ...on P C board Remote controller LED 1 on P C board Possible cause of trouble v v No message v V E06 E07 L04 v No message V v P02 V V P04 P05 V F04 F09 v H01 H02 V H04 H05 E15 E16 Flash at the same time...

Page 71: ...CB Is there 220 240 V AC between R and S of the indoor PCB Is the LED D80 on the indoor unit PCB lit Is there 12 V DC between R2 and R3 on the 8P terminal plate of the indoor unit Is the primary side...

Page 72: ...ntroller wiring from the indoor unit terminal plate Replace the indoor unit PCB OK No No No Yes Yes Yes NG 0655_M_I Start Remote controller judges itself with self diagnostic functions Replace the rem...

Page 73: ...r indoor serial communications on the outdoor unit PCB Correct the connections No Correct the connections Replace the indoor unit PCB Replace the indoor unit PCB Indoor outdoor unit control lines are...

Page 74: ...te controller switches when there are two remote controllers 8 Symptom LCD on the remote controller is displaying CHECK E09 Duplicate setting of RCU address switch of remote controllers No Yes Yes 033...

Page 75: ...0340_M_I Start Is there 220 240 V AC between S4 and T20 3 on the indoor unit PCB Is there 220 240 V AC between T20 3 and S4 after T20 1 and T20 3 on the indoor unit PCB shorted Is the indoor fan wire...

Page 76: ...o No Replace the outdoor unit PCB Is there 220 240 V AC between CN19 9 and CN19 1 on the outdoor unit PCB Yes Replace the outdoor unit PCB Is the high voltage switch 63 PH off Yes Replace the fuse Is...

Page 77: ...ct indoor unit No Yes No Yes 0344_M_I Start Are there connection defects in the wiring High pressure switch defect Repair the wiring The system does not operate again High pressure switch activation B...

Page 78: ...s there a contact defect in the 3P connector No Yes Replace the fuse Is the fuse F1 F2 on the indoor unit PCB blown 14 Symptom LCD on the remote controller displays CHECK E15 No No No Yes Yes Yes 0646...

Page 79: ...bing Confirm less than 5 indoor units are connected Select indoor units which match with the outdoor capacity Are the total capacities of indoor units to that of outdoor units more than 107 0648_M_S 1...

Page 80: ...Failure in the electronic control valve activation No Replace the sensor Operate the unit in cooling mode 30 minutes after its operation Cooled air comes out Is the temperature of each indoor coil sen...

Page 81: ...an motor winding Replace the fan motor Replace the capacitor Replace the P C B Ass y in the indoor unit No Yes Out 0650_M_S Is 15P connector socket RED attached to panel connected firmly with 15P plug...

Page 82: ...istance of fan motor winding NG Replace the fan motor Replace the relays Replace the capacitor Replace P C B Ass y in the outdoor unit Are auxiliary relays 1Y 2Y normal 0462_M_I No Yes Does compressor...

Page 83: ...hift temperature in heating mode I Set the indoor unit address J Change the period of the filter timer A Set service check switches The service check switch RCU CK is located on the back of the remote...

Page 84: ...N SPEED ON OFF SET TEMP UNIT FLAP AIR FLOW TEST C TIMER SET A TEST CHK a Press the TEST CHK button at the bottom right on the remote controller b Press the ON OFF operation button to start the test ru...

Page 85: ...MODE FAN SPEED ON OFF SET TEMP UNIT FLAP AIR FLOW R C No UNIT No No CODE SET TEMP C TIMER SET AIM SWEEP A SETTING TEST CHK 0356_M_I b The UNIT No the address and temperature of the sensors instead of...

Page 86: ...n if the unit is not working To display the past error codes follow the procedure below Procedure a On the remote controller press both TEST CHK and SET buttons at the same time for more than 4 second...

Page 87: ...ther SET TEMP button or as follows SERVICE R C No CHECK UNIT No No CODE 0358_M_I CODE No No UNIT No 1 1 Alarm message Refrigerant Circuit No 0359_M_I Present Past Present Past MODE FAN SPEED SET TEMP...

Page 88: ...c function to check if it works properly Use this procedure to find out if the remote controller itself is in trouble a Turn ON the RCU CK switch on the back of the P C B Ass y in the remote controlle...

Page 89: ...N state e If an error occurs during operation the alarm message will be displayed Check and remove the cause If you want to stop the operation press the CL button then the unit stands in waiting mode...

Page 90: ...m the R C No The smallest registered indoor No and the selected R C No will be displayed Ex R C No 3 is selected Indoor No 2 is the smallest indoor No of the R C No 3 d Select the indoor No which you...

Page 91: ...EST CHK button i If you want to change the indoor unit address of the other R C No follow the step a to h in the same way In this case UNIT No 3 6 current 3 8 NEW after pressing the TEST CHK button SE...

Page 92: ...trol if you want to change all units in group control collectively proceed next step remaining ALL displayed If you want to change a unit individually select the indoor unit address UNIT No with UNIT...

Page 93: ...nected with the indoor unit temporarily a Short the two terminals of DISP PIN on indoor unit PCB DISP PIN Refer to P VI 2 b Press the TEST CHK SET and CL buttons at the same time for more than 4 secon...

Page 94: ...ton Ex Indoor unit No 4 will be set In this example indoor unit address UNIT No will be set 2 4 Ex No of R C will be set 2 h Press the SET button UNIT No CODE No 13 SETTING and SET DATA 0004 change fr...

Page 95: ...l If you made a mistake press the CL button so that setting returns to the initial state m Press the TEST CHK button to finish this mode The display is disappeared n Confirm the indoor unit address U...

Page 96: ...roup control collectively proceed next step remaining ALL displayed If you want to change a unit individually select the indoor unit address UNIT No with UNIT button c Select the CODE No 02 with SET T...

Page 97: ...d measure the resistance by placing a probe on high voltage terminal on the terminal plate Fig 40 See Fig 28 3 Outdoor Unit GR250R5TAA Clamp a metallic part of the unit with the lead clip of the insul...

Page 98: ...tor etc Fig 43 Measure the resistance in the same manner as illustrated on the right Refer to Electrical Wiring Diagram NOTE If the probe does not enter the hole because the hole is too narrow use a p...

Page 99: ...rminals between No 8 GRY lead wire and No 9 GRY lead wire 2 Compressor motor thermal protector 49C Outdoor unit Only for the AE425SH3E and AE436SH3E Disconnect the 8P connector white and the 9P connec...

Page 100: ...FMI Indoor unit Measure the coil resistance Measure the resistance between each terminal of 9P WHT socket connected to the indoor fan motor Refer to 1 2 A Major component specifications 4 Outdoor fan...

Page 101: ...phase compressor Remove the cover of compressor terminal and measure the resistance between terminals Refer to 1 2 Major component specifications 8 Compressor motor magnetic contactor 52C Outdoor unit...

Page 102: ...ty Remove the P C B Ass y from the electrical component box Then pull out the fuse from the P C B Ass y Fig 46 Then check the continuity of the fuse by using the multimeter Fig 47 Fig 47 Fuses Indoor...

Page 103: ...4_T_I SPA250R5TAA Indoor Unit SPA250R5TAA SPA360R5TAA SPA480R5TAA TH2 E1 RED Electronic refrigerant control valve ERCV TH4 E3 BRN 0472_T_I ERCV E1 E3 TH2 E1 RED Electronic refrigerant control valve ER...

Page 104: ..._S TH6 C1 BLK TH7 C2 RED TH6 7 8 CM CH TH8 GRN Discharge gas 63PH 20S 0584_C_S 0583_C_S TH6 C1 BLK 20S TH7 C2 RED TH6 7 8 20S 63PH CM CH TH8 GRN Discharge gas 0582_C_S Outdoor Unit 4 SERVICE PROCEDURE...

Page 105: ...105 4 0585_C_S TH6 C1 BLK TH7 C2 RED GR480R7TAA TH6 7 8 CM CH TH8 GRN Discharge gas 63PH 20S 0586_C_S 4 SERVICE PROCEDURES...

Page 106: ...discharge gas temp sensor TH8 PTC 51H PBC 41E PB3M 41E Resistance kn 10 15 20 25 30 35 40 10 9 8 7 6 5 4 3 2 1 Temperature C 0374_M_I 20 15 10 5 0 5 10 15 20 0 5 10 15 20 25 30 35 40 Temperature C Res...

Page 107: ...its In case of group control up to 8 indoor units can be connected with one remote controller before turning on the power supply set the R C address with S2 S3 on the outdoor control PCB R C address R...

Page 108: ...ess black Refrigerant circuit address factory setting 0 Outdoor control PCB 0515_C_I 2 0 A ADD S1 Automatic address setting start button Used for central control link system and group control Normally...

Page 109: ...ress operation finishes the display will disappear 6 Execute the operation of the other R C line in the same way by following the above steps 2 to 3 7 Complete the auto address operation by pressing t...

Page 110: ...n or Blue 4P DIP switch on outdoor control PCB The model code is set by S5 black 2P DIP switch on outdoor control PCB S4 Capacity code S5 Model code No Outdoor PCB Model No 1 2 250 type 1 phase ON OFF...

Page 111: ...ctive parts repair them according to Service Manual Note Check the indoor side drain water Recheck the test items before test operation Check the indoor and outdoor unit combination wiring See 4 2 6 B...

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