Mitsubishi PUHZ-SHW112YAA - Page 31


10 to 16 V DC?
YES
NO
Lighting
Blinking
Lighting
Blinking
Check the voltage of the
terminal block (TB6) of
the remote controller.
Check the status of the LED2
after disconnecting the remote
controller wire from the indoor
unit.
'HIHFWLYH
remote controller
5HSODFHWKH
remote controller.
%UHDNLQJRUSRRU
contact of the remote
controller wire
&KHFNLIWKHUHLVEUHDNLQJ
RUSRRUFRQWDFWRIWKH
remote controller wire.
Check the voltage of the
remote controller wire.
If it is not between 10 and
16 V DC, the indoor
controller board must be
defective.
7KHUHPRWHFRQWUROOHU
wire short-circuits
&KHFNLIWKHUHPRWH
controller wire is
short-circuited.
'HIHFWLYHLQGRRU
controller board
5HSODFHWKHLQGRRU
controller board.
Diagnosis flow Cause
,QVSHFWLRQPHWKRGDQG
troubleshooting
Symptoms: Nothing is displayed on the remote controller. 3
/('GLVSOD\RIWKHLQGRRU
controller board
LED1 :
LED2 : or
LED3 : —
Check the status
of the LED2.
Check the status
of the LED2.
OCH651