Installations
Domestic air conditioner
11.4.8 Power Supply Over or under voltage fault
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?
Method of
malfunction detection
Malfunction detection
conditions
Troubleshooting
An abnormal voltage rise or fall is detected by checking the specified voltage detection
An voltage signal is fed from the voltage detection circuit to the microcomputer
Ŷ
Supply voltage not as specified.
Ŷ
The IPM module is broken.
Ŷ
The outdoor PCB is broken.
Supposed causes
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else
parts damage may be occurred.
LED1 flash 21 times The power supply is over voltage
Outdoor diplay
46
Содержание 1U12BS3ERA
Страница 11: ... Pinping diagrams Domestic air conditioner 4ˊPinping diagrams 9 ...
Страница 12: ... Operation range Domestic air conditioner 5ˊOperation range 10 ...
Страница 16: ... CN1 CN2 CN3 CN4 CN5 CN6 6 CN7 PCB 2 Dom Wirin mestic air co ng diagrams onditioner CN1 CN1 s 11 10 14 ...
Страница 32: ... Dimensinal drawings Domestic air conditioner 8 Dimensional drawings 9 Center of gravity 30 ...