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2-2. Major Component Specifications

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No.

POW – K8E(A), POW – K8E(B)

Controls

Microprocessor

Control circuit fuse

250 V 3.15 A

Remote Control Unit

RCS – 8PS3E

Type

Cross – flow

Q'ty ... Dia. and length

1 ... ø95 / L617

Fan motor model ... Q'ty

KFV4Q – 11H5P – S ... 1

No. of poles ... rpm (230 V, High)

4 ... 1,190

Nominal output

Coil resistance (Ambient temp. 20°C)

Ω

BRN – WHT : 561.8

VLT – WHT : 197.4

VLT – ORG : 63.4

YEL – ORG : 155.7

YEL – PNK : 115.9

Safety

Type

Internal fuse

devices

Operating temp.

Open

°C

145 ± 2

—

Run capacitor

µF

0.8

VAC

440

Type

Stepping motor

Model

MP24GA1

Rating

DC 12 V

Coil resistance (Ambient temp. 25°C)

Ω

WHT – BLU (respectively 4 wires) : 380 ± 7%

Coil

Aluminum plate fin / Copper tube

Rows

Fin pitch

1.4

Face area

0.130

Heat

Exch. Coil

Flap Motor

Fan & Fan Motor

Controller

PCB

Indoor Unit MCAV97C5VAB

Содержание GRV187M2C5VAA

Страница 1: ...TECHNICAL DATA SERVICE MANUAL Indoor Unit Outdoor Unit MCAV97C5VAB GRV187M2C5VAA MULTI SPLIT SYSTEM AIR CONDITIONER Indoor Unit Outdoor Unit MCAV97C5VAB GRV187M2C5VAA 0 8180 139 0 03 2001 ...

Страница 2: ...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 aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be necessary to construct a strong wood or metal frame t...

Страница 3: ... 1 Room Temperature Control 19 9 2 Dry Operation 20 9 3 Freeze prevention 21 10 REFRIGERANT R407C SPECIAL PRECAUTION WHEN SERVICING UNIT 10 1 Characteristics of new refrigerant R407c 22 10 2 Checklist before servicing 22 10 3 Tools specifically for R407c 23 10 4 For tubing installation procedures 23 10 5 In case of compressor malfunction 24 10 6 In case refrigerant is leaking 26 10 7 Charging addi...

Страница 4: ...13 CHECKING ELECTRICAL COMPONENTS 13 1 Measurement of insulation Resistance 40 13 2 Checking Continuity of Fuse on PCB Ass y 41 13 3 Checking Motor Capacitor 41 APPENDIX INSTRUCTION MANUAL 42 iv ...

Страница 5: ...t Combination Combine indoor and outdoor units only as listed below Indoor Unit Outdoor Unit A B Refer to Outdoor Unit Symbol of Indoor Unit A Indoor Unit Fig 1 GRV187M2C5VAA MCAV97C5VAB Fig 1 B MCAV97C5VAB ...

Страница 6: ...1 OPERATING RANGE 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 1 ...

Страница 7: ...d Auto 1 Hi Airflow direction Indoor Horizontal Manual Vertical Auto Air filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 2 000 1 000 2 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 38 33 31 Outdoor Hi dB A 53 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant tube Narrow t...

Страница 8: ...1 190 Nominal output W 10 Coil resistance Ambient temp 20 C Ω BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety Type Internal fuse devices Operating temp Open C 145 2 Close Run capacitor µF 0 8 VAC 440 Type Stepping motor Model MP24GA1 Rating DC 12 V Coil resistance Ambient temp 25 C Ω WHT BLU respectively 4 wires 380 7 Coil Aluminum plate fin Copper tube Rows 2 Fin pitch...

Страница 9: ... Operating amp Ambient temp 25 C Trip in 6 to 16 sec at 18A Run capacitor Q ty µF 25 2 VAC 450 2 Type Propeller Q ty Dia mm 1 ø400 Fan motor model Q ty SMEN 19TFB6047 S 1 No of poles rpm 230 V 6 910 Nominal output W 50 Coil resistance Ambient temp 20 C Ω WHT BRN 83 4 WHT PNK 218 7 Safety Type Internal protector devices Operating temp Open C 130 5 Close Automatic reclosing Run capacitor µF 2 0 VAC ...

Страница 10: ...resistance Ω at 21 C Primary WHT WHT 205 10 Secondary BRN BRN 2 0 10 Thermal cut off temp 150 C Thermistor Coil sensor DTN TKS131B Resistance kΩ 0 C 15 0 2 Thermistor Room sensor DTN TKS134B Resistance kΩ 25 C 5 0 3 Outdoor Unit GRV187M2C5VAA Power Relay RA RB G7L 2A TUB Coil rating AC 200 240V 50 Coil resistance Ω at 23 C 21 15 Contact rating AC 240V 14A ...

Страница 11: ...3 DIMENSIONAL DATA Indoor Unit MCAV97C5VAB 58 5 99 5 805 177 41 0 41 0 270 Narrow tube ø6 35 1 4 Wide tube ø9 52 3 8 Center of tubing hole 2 places Drain hose ø18 Remote control unit 18 5 61 172 5 Unit mm ...

Страница 12: ...VAA 58 58 95 58 337 307 630 19 Narrow tube service valve ø6 35 1 4 1 Wide tube service valve ø9 52 3 8 2 305 830 4 ø12 holes Air discharge Air intake 538 146 2 Magnified illustration 1 To Indoor Unit B To Indoor Unit A Unit mm ...

Страница 13: ...TC 3 10 2 99 2 85 2 68 2 47 CM 0 90 0 95 1 02 1 12 1 21 21 SHC 1 36 1 31 1 25 1 18 1 09 23 SHC 1 60 1 56 1 49 1 42 1 33 19 25 SHC 1 83 1 79 1 73 1 66 1 57 27 SHC 2 06 2 03 1 97 1 90 1 81 29 SHC 2 29 2 27 2 21 2 14 2 04 31 SHC 2 53 2 51 2 45 2 37 2 29 TC 3 28 3 17 3 02 2 84 2 61 CM 0 92 0 98 1 05 1 15 1 25 23 SHC 1 34 1 29 1 23 1 16 1 07 21 25 SHC 1 57 1 53 1 47 1 40 1 31 27 SHC 1 81 1 77 1 71 1 64...

Страница 14: ... THROW DISTANCE CHART 9 0 1 2 3 4 5 6 7 8 9 1 2 3 4 Horizontal distance m Axis air velocity m s Vertical distance m Axis air velocity Flap angle 0 30 Room air temp 27 C Fan speed High Indoor Unit MCAV97C5VAB ...

Страница 15: ...h a proper insulation material The thickness of the insulation should be a min 8 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 Wide tube Thickness Min 8 mm Insulation Narrow tube Thickness Min 8 mm CAUTION Outdoor Unit Wide tube O D ø9 52mm 3 8 Narrow tube O D ø6 35 mm 1 4 Condenser Wide tube service valve Comp...

Страница 16: ...VAA Rating Conditions Indoor Air Temperature 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 230V Single phase 50 Hz Number of indoor unit 1 Unit Either A or B 2 Units Both A and B Rating Conditions Running amp A 4 6 9 5 Power input kW 1 02 2 05 Full Load Conditions Running amp A 5 4 10 8 Power input ...

Страница 17: ...7 2 Electric Wiring Diagrams Indoor Unit MCAV97C5VAB WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts 12 ...

Страница 18: ...Outdoor Unit GRV187M2C5VAA WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts 13 ...

Страница 19: ...50 Outdoor inlet air D B temp C Operating current A 10 Low pressure at wide tube service valve kg cm 2 G 32 27 21 32 27 21 Points of Rating condition Black dots in above charts indicate the following rating conditions Cooling Indoor air temperature 27 C D B 19 C W B Outdoor air temperature 35 C D B 24 C W B NOTE Indoor Unit MCAV97C5VAB x1 Outdoor Unit GRV187M2C5VAA 7 3 Performance Charts ...

Страница 20: ...IT Front View Wall mounted Type Wall Mounted Type Front View Fig 2a WARNING Minimum height from floor level 1 5m Indoor Unit Wall Floor level For stable operation of the air conditioner do not install wall mounted type indoor units under 1 5m from floor level CAUTION Fig 2b 8 1 Installation Site Selection Maximum Allowable Tubing Length L and Elevation Difference H The Multi Split System outdoor u...

Страница 21: ...to reduce humidity and protect the unit against possible water damage and decreased service life Fig 5a use lug bolts or equal to bolt down unit reducing vibration and noise Outdoor Unit Outdoor unit Hot air Heat source Exhaust fan Fig 3 Fig 3 Air intake Min 10 cm Air discharge Min 5 cm Min 40 cm Valve side Min 25 cm Top View Air intake Concrete or equal About 10 cm Min 10 cm Anchor bolts 4 pcs Ab...

Страница 22: ...at 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 removable mounting 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 posit...

Страница 23: ...ir conditioner unit must be grounded Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram The indoor unit draws its power from the outdoor unit WARNING WARNING 220 240V 50Hz Ground A Unit B 4 2 1 Unit A 4 2 1 N L N L B Disconnect switch Field supply Indoor unit 4 3 2 1 4 3 2 1 1 2 Ground Ground Outdoor unit WIRING SYSTEM DIAGRAM Table 2 A Power Supply Wiring ...

Страница 24: ...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 or more of compressor operation Thermo ON When the room temperature is above T 1 C T C is set temperature Compressor ON Thermo OFF When the room temperature is equal to or below set temperature T C C...

Страница 25: ...ne Both the indoor and outdoor units stop Room temp 15 C Dry A zone Compressor FMI indoor fan Continuous operation L low speed LL very low speed intermittent ventilation only while the compressor is ON Dry B zone Compressor FMI indoor fan Intermittent operation ON for 3 minutes and OFF for 9 minutes L low speed LL very low speed intermittent ventilation only while the compressor is ON Intermittent...

Страница 26: ...t 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 6 minutes depending upon production date NOTE ON ON ON ON OFF OFF Set speed More than 10 minutes 6 minutes T 1 C Indoor heat exch coil temp 1 C Compressor Indoor fan Room temp Thermo OFF Thermo ON Set t...

Страница 27: ...omposition 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 Thus always charge the refrigerant while it is in the liquid phase Ether type oil is used for the compressor oil for R407C type units which is different from the mineral oil used for R22 Thus more a...

Страница 28: ...nstallation procedures refer to the installation manuals attached to the indoor unit and outdoor unit 23 Tool Distinction Tool Name Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Tools specifically for R407C Refrigerant recovery unit Vacuum pump with anti reverse flow 1 Solenoid valve installed type which prevents oil from flowing back into the unit when the ...

Страница 29: ...t 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 installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be damaged if...

Страница 30: ...if 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 refrigerant cylinder is less than 20 Also charge the minimum necessary amount to the cylinder before using it for charging the air conditioning unit Example In case of charging refrigerant to a unit re...

Страница 31: ...tubes 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 use a refrigerant other than R407C Also do not use oxygen or any flammable gas 5 Evacuation Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of ai...

Страница 32: ...ging 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 76Kg For the remaining refrigerant refer to the instructions of the refrigerant manufacturer If using a charging cylinder transfer the specified amount of liquid refrigerant from the refrigerant cylinde...

Страница 33: ...ns given in 10 6 In case refrigerant is leaking and completely carry out repairs Only then should you recharge the refrigerant 10 8 Retro fitting existing systems 10 8 1 Use of existing units Never use new refrigerant R407C for existing units which use R22 This will cause the air conditioner to operate improperly and may result in a hazardous condition 10 8 2 Use of existing tubing If replacing an...

Страница 34: ...t voltage is in specified range 10 of the rating Check that power is being supplied 11 1 4 Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct 29 WARNING Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect power or turn off circuit breaker before...

Страница 35: ...et circuit breaker to OFF Measure insulation resistance of electrical parts in indoor unit 1 Remove both power supply wires and inter unit wires from terminal plate in outdoor unit Measure insulation resistance of outdoor unit 2 Remove inter unit wires from terminal plate in indoor unit Measure insulation resistance of indoor unit Insulation of outdoor unit is defective Insulation of indoor unit i...

Страница 36: ... conditioner on There is a possibility of short circuit Replace with suitable one larger capacity NO Check capacity of circuit breaker Capacity of circuit breaker is suitable Measure resistance of outdoor fan motor winding Measure resistance of compressor motor winding ...

Страница 37: ...it for recovery or contact power company YES NO OPERATION selector switch is set in ON position Set OPERATION selector switch to ON Indoor PCB Ass y is defective Refer to Step C below Clean transmitter OK Try to run with another remote control unit First remote control unit is defective Check for residue buildup on transmitter of remote control unit Check for residue buildup on remote control rece...

Страница 38: ...ce of primary and secondary winding of transformer TR Indoor PCB Ass y is defective OK OK Measure resistance of indoor and outdoor fan motor winding FM Measure coil resistance of compressor motor winding CM OK Measure coil resistance of power relay in outdoor unit RA RB Replace the fuse If fuse has been blown Timer is turned ON Check to see if or is displayed on remote control YES Cancel the timer...

Страница 39: ...tdoor unit 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 unit is defective Try to run using another remote control unit OK Measure coil resistance of power relay Check indoor PCB Ass y RA RB ...

Страница 40: ...or burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of indoor fan motor winding Check fan motor capacitor Fan cannot be turned OK Check fan rotation Turn fan gently once or twice by hand Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resista...

Страница 41: ...e resistance of compressor motor winding NO YES YES Overload relay is working OLR 1 to 4 YES Temperature of compressor is abnormally high Refrigerant gas shortage Charge refrigerant gas R407c Rotor may be locked up C2 C3 Measure Power supply voltage The voltage is too low No Measure resistance of flap motor winding ...

Страница 42: ...oor unit are insulated Insulate both wide and narrow tubes separately and then tape together Measure temperature of suction and discharge air of air conditioner Charge refrigerant gas R407c Check for clogging of air filter Fan speed is set to LOW Clean filter Set fan speed to either HIGH or MEDIUM Review cooling load estimate if performance of air conditioner is normal Reduce cooling load or repla...

Страница 43: ...rt the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature In Cooling mode The air conditioner continues to operate Thermo ON Both the outdoor fan and compressor do not stop As a result the room becomes too cold Definition of Open or Short Circuit of Sensor Thermistor Open A lead wire is broken or disconnected or the circuit inside ...

Страница 44: ...r C3 Fan motor capacitor C1 Overload relay 1 Overload relay 3 Terminal plate Relay A RA Relay B RB To indoor unit B To indoor unit A From power supply Compressor A CMA Compressor B CMB Fan motor Heat exchenger coil Electric Parts Parts Layout in Unit 1 2 4 5 6 7 8 9101112 Outdoor Unit GRV187M2C5VAA ...

Страница 45: ...t 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 13 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 m...

Страница 46: ...hen 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 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 Multimeter Ω...

Страница 47: ...S A C olgiate olona printed in italy R D 28 Reyrieux BP 131 01601 Trévoux CEDEX France Tél 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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