Domestic Air Conditioner
Does fan rotate
smoothly?
NO
Yes
Turn power ON and operate fan
Does it rotate?
No
Yes
Turn off power supply and disconnect fan
motor connector,then turn power ON
Check output of fan motor connector
I s m o t o r p o w e r
voltage D C 3 1 0 V
NO
Yes
Replace indoor unit
PCB
Replace fan motor
Stop fan motor
Is rotation number
command pulse
generated?
Is motor control power
voltageDC15Vgenerat
Is rotation number
commamd voltage
DC1
̚
6V
NO
Yes
Yes
No
No
Y
Replace indoor unit
PCB
Replace fan motor
Replace indoor
unit PCB
Replace indoor fan motor
PCB
HSU12/18VHJ(DB)
Functions and control
58
Summary of Contents for HSU18VHJ(DB)
Page 3: ...12 VHJ DB 101 101 102 106 ...
Page 18: ...Domestic Air Conditioner PCB 2 CN1 CN2 CN3 CN4 CN5 CN6 CN7 CN11 CN10 15 HSU12 18VHJ DB ...
Page 21: ... Domestic Air Conditioner PCB 2 CN1 CN2 CN3 CN4 CN5 CN6 CN7 CN11 CN10 18 HSU12 18VHJ DB ...
Page 95: ...Loosen the top panel screws 1 2 Lift the top panel HSU12 18VHJ DB Removal Procedure 92 ...
Page 97: ...9 3 2 Removal of Electrical Box HSU12 18VHJ DB Removal Procedure 94 ...
Page 98: ...9 3 3 Removal of Fan and Fan Motor HSU12 18VHJ DB Removal Procedure 95 ...
Page 99: ...2 Loosen the fixing screws and remove the motor HSU12 18VHJ DB Removal Procedure 96 ...
Page 100: ...9 3 4 Removal of fan motor Bracket and Partition HSU12 18VHJ DB Removal Procedure 97 ...
Page 101: ...and remove the reactor Loosen the screw HSU12 18VHJ DB Removal Procedure 98 ...
Page 104: ... SSHQGL SSHQGL 3LSLQJ LDJUDPV 68 9 101 ...
Page 109: ...10 3 Circuit Diagrams 10 3 1 INDOORUNIT FOR12K Appendix HSU12 18VHJ DB 106 ...