.
.8 Power Supply Over or under voltage fault
Outdoor display: LED1 flash 6 times The power supply is over voltage
abnormal voltage rise or fall is detected by checking the specified voltage detection circuit.
An voltage signal is fed from the voltage detection circuit to the microcomputer
■
Supply voltage not as specified
■
the IPM module is broken
■
the outdoor PCB is broken
* 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?
Service diagnosis
Domestic air conditioner
Conditions
Supposed
Causes
Troubleshooting
Method of
malfunction detection
Malfunction detection
conditions
Summary of Contents for 2U14CS4ERA
Page 10: ... Pinping diagrams Domestic air conditioner 4ˊPinping diagrams 8 ...
Page 11: ... Operation range Domestic air conditioner 5ˊOperation range 9 ...
Page 15: ...PCB 2 CN1 CN5 CN6 CN7 CN10 CN11 CN8 CN9 CN2 CN3 CN4 Domestic air conditioner Wiring diagram ...
Page 16: ...0 Wiring diagram Domestic air conditioner ...
Page 35: ...WARNING CAUTION Installations Domestic air conditioner 33 ...
Page 36: ...Installations Domestic air conditioner 34 ...
Page 37: ...Installations Domestic air conditioner 35 ...
Page 38: ...Installations Domestic air conditioner 36 ...
Page 39: ...Installations Domestic air conditioner 37 ...
Page 40: ...Installations Domestic air conditioner 38 ...
Page 41: ...Installations Domestic air conditioner 39 ...
Page 85: ...1 Removal Procedure 1 Domestic Air Conditioner p ...
Page 87: ...Loosen the screws and pull the panel Removal Procedure 3 Domestic Air Conditioner ...
Page 89: ...Removal Procedure 5 Domestic Air Conditioner 2 ...
Page 90: ...Removal Procedure 6 Domestic Air Conditioner 3 ...
Page 91: ...2 Loosen the fixing screws and remove the motor Removal Procedure 7 Domestic Air Conditioner ...
Page 92: ...Removal Procedure 8 Domestic Air Conditioner 4 F M P B ...
Page 93: ...and remove the reactor Loosen the screw Removal Procedure 9 Domestic Air Conditioner ...