Technibel GRV129R5VAA Technical Data & Service Manual Download Page 4

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CHECKING ELECTRICAL COMPONENTS

11-1 Measurements of insulation resistance 68
11-2 Checking continuity of fuse on PCB ass’y 69
11-3 Checking motor capacitor 69

DISASSEMBLY PROCEDURE FOR INDOOR UNIT

12-1 Removing air intake grille 70
12-2 Removing side panels 71
12-3 Access and removal of electrical components box 71
12-4 Removing flap motor 72
12-5 Removing evaporator 72
12-6 Removing fan and fan motor 74

APPENDIX Instructions manual 75

Summary of Contents for GRV129R5VAA

Page 1: ...97R5VAA GRV99R5VAA MCAV127R5VAA GRV129R5VAA Indoor Unit Outdoor Unit SPLIT SYSTEM AIR CONDITIONER MCAV77R5VAA MCAV97R5VAA MCAV127R5TAA GRV79R5VAA GRV99R5VAA GRV129R5VAA KPAV128R5TAA GRV129R5VAA Ceilin...

Page 2: ...ARNING 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 alu...

Page 3: ...8 2 Dry Operation 45 8 3 Automatic Switching between Cooling and Heating 45 8 4 Freeze prevention 46 8 5 Overload Prevention 47 8 6 Cold Draft Prevention 48 8 7 Defrosting Operation 49 9 REFRIGERANT R...

Page 4: ...y 69 11 3 Checking motor capacitor 69 12 DISASSEMBLY PROCEDURE FOR INDOOR UNIT 12 1 Removing air intake grille 70 12 2 Removing side panels 71 12 3 Access and removal of electrical components box 71...

Page 5: ...NGE Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 32 C D B 23 C W B 43 C D B Minimum 19 C D B 14 C W B 19 C D B Heating Maximum 27 C D B 24 C D B 18 C W B Minimum 16 C D B...

Page 6: ...Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 770 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 37 32 31 37 32 31 Outdoor Hi d...

Page 7: ...Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 990 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 37 32 31 37 32 31 Outdoor Hi dB A 43 45 Refrigera...

Page 8: ...ld Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 1 150 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 39 35 33 39 35 33 Outdoor Hi dB A 45 47 Refri...

Page 9: ...ompressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 1150 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 44 40 35 44 40 35 Outdoor Hi dB A 45 47 Refrigeran...

Page 10: ...No of poles rpm 230 V High 4 1 130 Nominal output W 10 Coil resistance Ambient temp 20 C BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety devices Type Internal fuse Operatin...

Page 11: ...4 1 190 Nominal output W 10 Coil resistance Ambient temp 20 C BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety devices Type Internal fuse Operating temp Open C 145 2 Close R...

Page 12: ...4 1 230 Nominal output W 10 Coil resistance Ambient temp 20 C BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety devices Type Internal fuse Operating temp Open C 145 2 Close...

Page 13: ...Coil resistance Ambient temp 20 C GRY WHT 314 7 WHT PNK 444 7 WHT VLT 98 9 7 VLT ORG 98 9 7 ORG YEL 223 7 Safety devices Type Internal protector Operating temp Open C 145 5 Close Automatic reclosing R...

Page 14: ...1 95 5 Operating amp Ambient temp 25 C Trip in 6 to 16 sec at 14A Run capacitor F 20 VAC 400 Crank case heater Fan Fan Motor Type Propeller Q ty Dia 1 370 Fan motor model Q ty K35610M01723 1 No of pol...

Page 15: ...perating amp Ambient temp 25 C Trip in 6 to 16 sec at 18A Run capacitor F 25 VAC 400 Crank case heater Fan Fan Motor Type Propeller Q ty Dia 1 370 Fan motor model Q ty K35610M01723 1 No of poles rpm 2...

Page 16: ...mbient temp 25 C Trip in 6 to 16 sec at 14A Run capacitor F 25 VAC 450 Crank case heater Fan Fan Motor Type Propeller Q ty Dia 1 370 Fan motor model Q ty K35610M01722 1 No of poles rpm 230 V High 6 83...

Page 17: ...ance at 20 C 1 740 7 Thermostat Defrost thermo 23D TRS02 12MSR Operating temp C ON 12 2 Diff 8 deg below Power Relay PR DFU24D1F Coil rating DC 24V Coil resistance at 20 C 650 10 Contact rating AC 250...

Page 18: ...BRN BRN 2 0 10 Thermal cut off temp 150 C Thermistor Coil sensor TH1 PBC 41E S14 Resistance k 20 C 40 1 5 20 C 6 5 5 10 C 24 4 5 30 C 4 4 5 0 C 15 3 5 40 C 3 0 5 10 C 9 9 5 50 C 2 1 5 Thermistor Room...

Page 19: ...CAV77R5VAA MCAV97R5VAA MCAV127R5VAA 58 5 99 5 805 177 41 0 41 0 270 Narrow tube 6 35 1 4 Wide tube 9 52 3 8 MCAV77 MCAV97 Wide tube 12 7 1 2 MCAV127 Center of tubing hole 2 places Drain hose 18 Remote...

Page 20: ...GRV79R5VAA GRV99R5VAA GRV129R5VAA 700 540 15 255 Narrow tube service valve 6 35 1 4 Wide tube service valve 9 52 3 8 12 7 1 2 170 103 57 470 4 12 holes 116 320 294 Air intake Air discharge GRV79 GRV99...

Page 21: ...exchanger Muffler Capillary tube Capillary tube Cooling cycle Heating cycle Strainer Indoor unit Outdoor unit Check valve Indoor Unit MCAV97R5VAA Outdoor Unit GRV99R5VAA Compressor 4 way valve Accumu...

Page 22: ...mm After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack IMPORTANT CAUTION Wide tube Thickness Min 8 mm Insulation Narrow tube Thickn...

Page 23: ...ting current A 25 9 10 7 32 27 19 4 27 20 15 2 95 30 2 85 28 2 65 26 2 46 24 2 26 22 2 06 20 5 0 5 10 15 20 Outdoor inlet air D B temp C High pressure at wide tube service valve MPa kgf cm 2 G 1 87 18...

Page 24: ...0 7 2 95 30 2 85 28 2 65 26 2 46 24 2 26 22 2 06 20 5 0 5 10 15 20 Outdoor inlet air D B temp C High pressure at wide tube service valve MPa kgf cm 2 G 1 87 18 1 67 16 1 47 14 25 7 1 28 12 1 08 10 32...

Page 25: ...27 19 4 32 27 19 4 27 20 15 5 0 5 10 15 20 Outdoor inlet air D B temp C High pressure at wide tube service valve MPa kgf cm 2 G 25 7 2 95 30 2 85 28 2 65 26 2 46 24 2 26 22 2 06 20 1 87 18 1 67 16 1...

Page 26: ...istance m Axis air velocity m s Vertical distance m Axis air velocity Flap angle 0 30 Room air temp 27 C Fan speed High Cooling 0 1 2 3 4 5 6 7 8 9 1 2 3 4 Horizontal distance m Axis air velocity m s...

Page 27: ...air velocity m s Vertical distance m Axis air velocity Flap angle 45 60 Room air temp 20 C Fan speed High Heating 0 1 2 3 4 5 6 7 8 9 1 2 3 4 Horizontal distance m Axis air velocity m s Vertical dista...

Page 28: ...air velocity m s Vertical distance m Axis air velocity Flap angle 45 60 Room air temp 20 C Fan speed High Heating 0 1 2 3 4 5 6 7 8 9 1 2 3 4 Horizontal distance m Axis air velocity m s Vertical dist...

Page 29: ...C Fan speed High Heating 0 1 2 3 4 5 6 7 1 0 2 3 Horizontal distance m Axis air velocity m s Vertical distance m Axis air verocity Flap angle 45 30 Ceiling mounted 0 1 2 3 4 5 6 7 1 0 2 3 Horizontal d...

Page 30: ...49 2 38 2 27 2 16 2 03 1 87 TC 2 65 2 53 2 42 2 30 2 16 1 99 CM 0 56 0 61 0 65 0 70 0 73 0 77 21 SHC 1 17 1 12 1 07 1 03 0 97 0 90 19 23 SHC 1 39 1 34 1 29 1 24 1 19 1 12 25 SHC 1 60 1 55 1 51 1 46 1...

Page 31: ...5 2 49 2 34 2 15 TC 3 05 2 92 2 78 2 65 2 49 2 29 CM 0 71 0 76 0 82 0 88 0 97 1 06 21 SHC 1 35 1 29 1 23 1 17 1 10 1 02 19 23 SHC 1 57 1 51 1 45 1 39 1 32 1 24 25 SHC 1 78 1 72 1 66 1 61 1 54 1 45 27...

Page 32: ...1 13 1 22 21 SHC 1 57 1 52 1 45 1 36 1 26 23 SHC 1 85 1 80 1 73 1 64 1 54 19 25 SHC 2 12 2 07 2 00 1 92 1 82 27 SHC 2 39 2 35 2 28 2 20 2 09 29 SHC 2 65 2 63 2 55 2 48 2 37 31 SHC 2 93 2 91 2 83 2 75...

Page 33: ...31 3 15 2 96 2 72 TC 3 85 3 69 3 52 3 35 3 15 2 90 CM 0 95 1 03 1 10 1 18 1 29 1 39 21 SHC 1 69 1 62 1 56 1 49 1 41 1 31 19 23 SHC 2 04 1 97 1 90 1 83 1 75 1 65 25 SHC 2 39 2 32 2 25 2 18 2 10 2 00 2...

Page 34: ...D B 6 C W B 2 Above characteristics indicate instantaneous operation which does not take into consideration defrost operation 3 Fan speed High 4 Because this air conditioner heats a room by drawing i...

Page 35: ...ure 27 C D B 19 C W B Outdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan...

Page 36: ...utdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compre...

Page 37: ...utdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compre...

Page 38: ...utdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compre...

Page 39: ...Electric Wiring Diagrams To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Indoor Unit MCAV77R5VAA MCAV97R5VAA MCAV12...

Page 40: ...36 To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Indoor Unit KPAV128R5TAA...

Page 41: ...37 To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Outdoor Unit GRV79R5VAA GRV99R5VAA...

Page 42: ...38 To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Outdoor Unit GRV129R5VAA...

Page 43: ...icted air flow around the unit Fig 1 install the unit within the maximum elevation difference H above or below the outdoor unit and within a total tubing length L from the outdoor unit as detailed Tab...

Page 44: ...l to reduce humidity and protect the unit against possible water damage and decreased service life Fig 5b use lug bolts or equal to bolt down unit reducing vibration and noise Outdoor Unit Outdoor uni...

Page 45: ...that position 3 After confirming correct operation use a screwdriver to screw the supplied special mounting screw into the wall Fig 6a 4 Hang the remote control unit from the mounting screw b Non remo...

Page 46: ...he outdoor unit size of wire and wiring method etc Each wire must be firmly connected No wire should be allowed to touch refrigerant tubing the compressor or any moving part To avoid the risk of elect...

Page 47: ...rant 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 after 5 minutes...

Page 48: ...ective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation Thermo ON When the room temperature is below T 1 C T C is set temperature Compressor ON T...

Page 49: ...calculates the difference between the set temperature and the room temperature and automatically switches to COOLING or HEATING mode to maintain the desired temperature Room temp Set temp COOL Room te...

Page 50: ...r at least 6 minutes The compressor does not start again until the temperature rises above 8 C or 6 minutes has elapsed 1 Functionally compressor running period or time are of two types 10 minutes and...

Page 51: ...nges from L low speed to M medium speed When the temperature of the indoor heat exchange coil rises above A C the outdoor fan stops The operation temperature shown as A B C and D in the chart differ b...

Page 52: ...the indoor unit lights up when this function is working when 10 minutes has elapsed the fan speed is automatically switched to set speed regardless of indoor heat exchange coil temperature The operat...

Page 53: ...or OFF C D Temperature of indoor heat exchanger coil is below Ta C Continuous operating time of compressor is more than 20 minutes Outdoor fan is either operated or stopped for more than 10 minutes A...

Page 54: ...s 11 minutes 32 seconds Start of defrosting Release of defrosting OFF OFF Release of cold draft prevention Compressor Outdoor fan Solenoid coil 4 way valve Indoor fan Standby lamp Indoor heat exch coi...

Page 55: ...osition will differ depending on whether it is in gaseous or liquid phase and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state T...

Page 56: ...tallation procedures refer to the installation manuals attached to the indoor unit and outdoor unit 52 Tool Distinction Tool Name Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Ch...

Page 57: ...quickly 3 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R407C Also do not use oxygen or any flammable gas 4 Evacuation Use a solenoid valve insta...

Page 58: ...f the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use the refrigerant if the amount in the re...

Page 59: ...ubes utilizing substitution with nitrogen N2 in the refrigerant circuit of the unit Leave ends of tubes open during welding 4 Checking for sealing Use nitrogen gas for the pressurized gas and never us...

Page 60: ...ing the air conditioning unit Example In case of charging refrigerant to a unit requiring 0 76Kg using a capacity of 10Kg cylinder the minimum necessary amount for the cylinder is 0 76 10 x 0 20 2 76K...

Page 61: ...ns given in 10 6 In case refrigerant is leaking and completely carry out repairs Only then should you recharge the refrigerant 9 8 Retro fitting existing systems 9 8 1 Use of existing units Never use...

Page 62: ...cified range 10 of the rating Check that power is being supplied 10 1 4 Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wire...

Page 63: ...Measure insulation resistance of electrical parts in indoor unit 1 Remove inter unit wires from terminal plate in outdoor unit Measure insulation resistance of outdoor unit 2 Remove inter unit wires f...

Page 64: ...ON selector switch to ON Indoor PCB Ass y is defective NO Check power supply Power is being supplied to the indoor unit Circuit breaker is tripped Power failure Reset breaker Wait for recovery or cont...

Page 65: ...secondary winding of transformer TR Indoor PCB Ass y is defective OK OK Measure resistance of indoor and outdoor fan motor winding FM Measure resistance of compressor motor winding CM OK Measure coil...

Page 66: ...voltage appears Outdoor PCB Ass y is defective OK OK NO Is room temperature too low Try to lower setting temperature by temperature setting button button Outdoor unit still does not run Remote control...

Page 67: ...nout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of outdoor fan motor winding Check fan motor capacitor Measure resistance of flap motor winding...

Page 68: ...or motor winding Measure resistance of power relay PR NO YES YES Overload relay is working Either OLR T or OLR A YES Temperature of compressor is abnormally high Refrigerant gas shortage Charge refrig...

Page 69: ...fective Check voltage between terminals No 1 and No 3 at the terminal plate DC 24V No voltage appears Outdoor PCB Ass y is defective OK Remote control unit may be defective Measure resistance of 4 way...

Page 70: ...ossibility of gas shortage YES Check position of remote control unit Cool or warm air from air conditioner reaches position directly Change position of remote control unit Wide and narrow tubes betwee...

Page 71: ...stor is short the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature a In Cooling mode The air conditioner continues to operate Therm...

Page 72: ...ter 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 11 1 4 Measurement of Insulation...

Page 73: ...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 The capacitor i...

Page 74: ...mpletely 12 DISASSEMBLY PROCEDURE FOR INDOOR UNIT IMPORTANT Please Read Before Starting Safety precautions for servicing the CEILING MOUNTED indoor unit Center latch Air intake grille Metal clip Air i...

Page 75: ...al of Electrical Component Box 1 Remove the front screw with a screwdriver Fig 4 2 Slide the lid out and up Fig 4 3 Disconnect the wiring as necessary 4 Remove the 4 screws then pull out the electrica...

Page 76: ...e direction of the arrow Fig 6 3 Remove the 2 screws to pull off the flap motor The arm and cam come off together with the motor Fig 7 12 5 Removing Evaporator Indoor Heat Exchange Coil 1 Remove the 7...

Page 77: ...is built into the drain pan Pull out the drain pan together with the evaporator in the direction of the arrow Fig 10 The foamed polystyrene drain pan is fragile DO NOT apply excessive force when remov...

Page 78: ...the fan casing out 3 Insert a hex wrench in the fan boss and turn it counterclockwise to loosen the centrifugal fan The fan can be removed by sliding it to the left Fig 14 4 Remove the 4 bolts to rem...

Page 79: ...INSTRUCTION MANUAL MCAV77R5VAA GRV79R5TAA MCAV97R5VAA GRV99R5TAA MCAV127R5VAA GRV129R5TAA APPENDIX 75...

Page 80: ...ed the following information Model and serial numbers are on the nameplate on the bottom of the cabinet Model No Serial No Date of purchase Dealer s address Phone number DECLARATION OF CONFORMITY This...

Page 81: ...he supply wiring 3 Wiring must be done by a qualified electrician Safety Instructions Read this Instruction Manual carefully before using this air conditioner If you still have any difficulties or pro...

Page 82: ...blown out of the air conditioner through the air outlet Remote Control Unit The wireless remote control unit controls power ON OFF operation mode selection temperature fan speed timer setting and air...

Page 83: ...rn off power completely TEST position This position is used only when servicing the air conditioner CAUTION Do not set at the TEST position for normal operation OPERATION lamp This lamp lights when th...

Page 84: ...program Timer 24 hour ON Timer 24 hour OFF Timer 1 hour OFF Timer 5 NIGHT SETBACK 6 Confirmation of transmission 7 Flap angle indication 8 Sweep indication Displayed when transmitting data Displayed w...

Page 85: ...s Press the button to increase the set temperature Press the button to reduce the set temperature ON OFF operation button This button is for turning the air conditioner on and off Timer setting button...

Page 86: ...OL or HEAT mode as appropriate The air conditioner makes the room warmer The air conditioner reduces the humidity in the room The air conditioner makes the room cooler FLAP button Press this button ei...

Page 87: ...han 1 month take out the batteries How to Use the Remote Control Unit When using the remote control unit always point the unit s transmitter head directly at the air conditioner s receiver Remote Cont...

Page 88: ...ting 1 Momentarily hold the remote control unit at the desired mounting position 2 Confirm that the air conditioner responds correctly when you press keys on the remote control from that position 3 Af...

Page 89: ...ctor to STEP 2 Press the ON OFF operation button To stop the air conditioner press the ON OFF operation button again NOTE To change the temperature setting press the temperature setting buttons and ch...

Page 90: ...ress the TEMP setting buttons to change the temperature setting to the desired temperature Adjustable temperature range 30 C max 16 C min STEP 4 Set the FAN SPEED selector button to the setting you wa...

Page 91: ...y controls the fan speed when the mode is selected When the air conditioner starts operating the difference between the room temperature and the set temperature is detected by the microcomputer which...

Page 92: ...IGHT SETBACK OFF ON CLOCK HR C SET TEMP 1 AIR CONDITIONER A When the night setback mode is selected the air conditioner automatically raises the temperature setting 1 C when 30 minutes have passed aft...

Page 93: ...inutes 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...

Page 94: ...s after several minutes This interval will vary slightly depending upon the outdoor temperature and the way in which frost forms STANDBY lamp For several minutes after the start of heating operation t...

Page 95: ...ree times The time indication alone flashes 2 Press the HH button until 21 is displayed Press the MM button until 10 is displayed The display will automatically stop flashing except for the symbol aft...

Page 96: ...The timer ON and time indications flash 2 Press the HH button until 7 is displayed Press the MM button until 10 is displayed The display will change automatically back to show the present time after...

Page 97: ...ation button again The 1 Hour Timer function is now cancelled and the unit operates normally NOTE If while the 1 Hour Timer function is operating the 1 HR TIMER button is pressed once to cancel the fu...

Page 98: ...e airflow direction within the range used during the heating cooling or dehumidifying operation NOTE The flap automatically closes when the unit is off During the heating operation the fan speed will...

Page 99: ...er on the indoor unit to clean it This will damage the internal components and cause an electric shock hazard Casing and Grille Indoor Unit Clean the casing and grille of the indoor unit with a vacuum...

Page 100: ...leaner to remove light dust If there is sticky dust on the filter wash the filter in lukewarm soapy water rinse it in clean water and dry it How to replace the anti mold filter 1 With the FRONT mark f...

Page 101: ...in the position shown in the diagram with the symbols meaning FRONT facing the front 3 Reinstall the anti mold filter Cleaning the main unit and remote control unit Wipe clean using a soft dry cloth...

Page 102: ...ow 5 Thermostat is set too high for cooling or too low for heating 5 Set the temperature lower or higher 6 Outdoor temperature is too low 6 Try to use a back up heater 7 Defrosting system does not wor...

Page 103: ...S A C olgiate olona printed in italy R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728...

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