Service diagnosis
37
Domestic air conditioner
10.3.8 Power Supply Over or under voltage fault
Outdoor display:
Ƶƾƶ)
LED1 flash 6 times The power supply is over voltage
Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit.
Malfunction
Detection
Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer
Decision
Conditions
Supposed
Ŷ
Supply voltage not as specified
Causes
Ŷ
the IPM module is broken
Ŷ
the outdoor PCB is broken
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else
parts damage may be occurred.
Electrify the machine again and turn it on with
the remote controller. Check whether the
compressor is started normally
Is it ok?
Yes
Maybe there is some disturbance
NO
No
~230 is ok?
Yes
Yes
This question may be caused by the power. Repair
the power supply.
NO
Change the IPM module
Change the IPM module
Test the outdoor power supply
(+310VDC) with a multimeter.
check whether the power
is >150 V or <390V?
Summary of Contents for AS25THMHRA-C
Page 2: ......
Page 41: ...Piping diagrams Domestic air conditioner 5 Piping diagrams 10...
Page 56: ...Dimensional drawings 24 Domestic air conditioner 8 Dimensional drawings 9 Center of gravity...
Page 73: ...Circuit diagrams 43 Domestic air conditioner 11 Circuit Diagrams...
Page 74: ...Circuit diagrams 44 Domestic air conditioner...
Page 79: ...three 6 Removal Procedure 4 Domestic Air Conditioner Remove the casing 1 2 3...
Page 83: ...Removal Procedure 8 Domestic Air Conditioner motor cover motor cover...
Page 84: ...Removal Procedure 9 Domestic Air Conditioner...
Page 96: ...Pinping diagrams Domestic air conditioner 4 Piping diagrams 9...
Page 97: ...Operation range 10 Domestic air conditioner 5 Operation range 10 0 21 27 35 20 40 60 43 20 40...
Page 99: ...Functions and control 13 Domestic air conditioner Wiring diagrams OUTDOOR UNIT...
Page 122: ...Service diagnosis 37 Domestic air conditioner...
Page 141: ...57 Do C omestic air ircuit Diagra conditioner ams r...
Page 142: ......
Page 144: ...Removal Procedure 1 Removal of Outdoor panel RPHVWLF LU RQGLWLR...
Page 145: ...Removal Procedure 2 Domestic Air Condition...
Page 146: ...4 Removal Procedure 3 Domestic Air Condition...
Page 147: ...Removal Procedure 2 Removal of Electrical Box RPHVWLF LU RQGLWLR...
Page 148: ...Removal Procedure 3 Removal of Fan and Fan Motor RPHVWLF LU RQGLWLR...
Page 149: ...Removal Procedure 4 Removal of fan motor brcked and partition RPHVWLF LU RQGLWLR...
Page 150: ...Removal Procedure 7 Domestic Air Condition...
Page 151: ...Removal Procedure 5 Removal of compressor and heat exchanger RPHVWLF LU RQGLWLR...
Page 152: ...Removal Procedure 9 Domestic Air Condition...
Page 165: ...Piping diagrams Domestic air conditioner 5 Piping diagrams 10...
Page 180: ...Dimensional drawings 24 Domestic air conditioner 8 Dimensional drawings 9 Center of gravity...
Page 197: ...Circuit diagrams 43 Domestic air conditioner 11 Circuit Diagrams...
Page 198: ...Circuit diagrams 44 Domestic air conditioner...
Page 203: ...three 6 Removal Procedure 4 Domestic Air Conditioner Remove the casing 1 2 3...
Page 206: ...2 7 Domestic Air Conditioner Removal Procedure Lift up the exchanger and remove it 1...
Page 207: ...Removal Procedure 8 Domestic Air Conditioner motor cover motor cover...
Page 208: ...Removal Procedure 9 Domestic Air Conditioner...
Page 220: ...Piping diagrams Domestic air conditioner 4 Piping diagrams 9...
Page 221: ...Operation range 10 Domestic air conditioner 5 Operation range 10 0 21 27 35 20 40 60 43 20 40...
Page 223: ...Functions and control 13 Domestic air conditioner Wiring diagrams OUTDOOR UNIT...
Page 246: ...Service diagnosis 37 Domestic air conditioner...
Page 265: ...57 Do C omestic air ircuit Diagra conditioner ams r...
Page 266: ......
Page 268: ...Removal Procedure 1 Removal of Outdoor panel RPHVWLF LU RQGLWLR...
Page 269: ...Removal Procedure 2 Domestic Air Condition...
Page 270: ...4 Removal Procedure 3 Domestic Air Condition...
Page 271: ...Removal Procedure 2 Removal of Electrical Box RPHVWLF LU RQGLWLR...
Page 272: ...Removal Procedure 3 Removal of Fan and Fan Motor RPHVWLF LU RQGLWLR...
Page 273: ...Removal Procedure 4 Removal of fan motor brcked and partition RPHVWLF LU RQGLWLR...
Page 274: ...Removal Procedure 7 Domestic Air Condition...
Page 275: ...Removal Procedure 5 Removal of compressor and heat exchanger RPHVWLF LU RQGLWLR...
Page 276: ...Removal Procedure 9 Domestic Air Condition...
Page 289: ...Piping diagrams Domestic air conditioner 5 Piping diagrams 10 CAPILLARY CAPILLARY...
Page 291: ...Printed circuit board connector wiring diagram 12 Domestic air conditioner PCB 1...
Page 318: ...Service diagnosis 40 Domestic air conditioner...
Page 321: ...11 Circ cuit Diag grams 43 Do C omestic air ircuit Diagra conditioner ams r...
Page 322: ...44 Do C omestic air ircuit Diagra conditioner ams r...
Page 323: ......
Page 351: ...Piping diagrams 9 Domestic air conditioner 4 Piping diagrams...
Page 352: ...Operation range 10 Domestic air conditioner 5 Operation range 10 0 21 27 35 20 40 60 43 20 40...
Page 355: ...Wiring diagrams Wiring diagrams 13 Domestic air conditioner...
Page 397: ......
Page 398: ......
Page 420: ...Piping diagrams Domestic air conditioner 5 Piping diagrams 10 EEV EEV...
Page 422: ...Printed circuit board connector wiring diagram 12 Domestic air conditioner PCB 1...
Page 449: ...Service diagnosis 40 Domestic air conditioner...
Page 452: ...11 Circ cuit Diag grams 43 Do C omestic air ircuit Diagra conditioner ams r...
Page 453: ...44 Do C omestic air ircuit Diagra conditioner ams r...
Page 481: ...Pinping diagrams Domestic air conditioner 4 Piping diagrams 9 EEV EEV...
Page 482: ...Operation range 10 Domestic air conditioner 5 Operation range 10 0 21 27 35 20 40 60 43 20 40...
Page 500: ...Dimensional drawing 28 Domestic air conditioner 8 Dimensional drawings 9 Center of gravity...
Page 507: ...Service diagnosis 36 Domestic air conditioner...
Page 529: ......