Service diagnosis
43
Domestic air conditioner
Led1 light
NO
YES
Remove fan motor after
switch off the power and
restart
the a/c ,the led 1 becomes light
or flash.
Fan motor is
damaged
,
replace it
with a new one.
YES
NO
YES
Test the fan motor terminal resistance
between pin 310V and 0V,or pin15V and 0V
of CN22 are close to 0m
Ω
with a multimeter
after switch off the power .
NO
Remove the connection cable
between CN23 of outdoor pcb and
CN10 of module pcb,The led1
becomes light or flash.
YES
YES
The module pcb is
damaged, replace it
with a new one.
The
outdoor pcb
is
damaged, replace it
with a new one.
NO
Measure the voltage
Between 3 and 4 of IC9 on the
Outdoor mainboard with a Multimete .
The voltage is a constant value of 0V
DC to 5V DC
The
outdoor pcb
is
damaged, replace
it with a new one.
YES
NO
The outdoor pcb is
well,and then check
the cable
If the voltage is a constant value
of 0V DC to 5V DC.Or the voltage
between Communication line(red ) and N(white
line) is not close to18V
DC when only indoor charged.
YES
The indoor mainboard is
damaged; replace it with a
new one.
NO
Test the outdoor power is
supply 230VAC with a
multimeter when indoor and
outdoor are charged.
LED2 light of the outdoor
NO
The module pcb
is damaged,
replace it with a
new one.
NO
YES
Check the cable
between outdoor
and power
(A)
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: ......