Mitsubishi Heavy Industries SRRM40HENG-L, Handbook, Page: 931 / 1106

FDC-HKX
929
2) Louver motor does not operate
Inspect at the indoor unit side.
▼
3) When the indoor unit blower does not operate
Inspect at the indoor unit side.
▼
Does the
louver operate at
power on?
Is LM wire
broken?
Is LM
locked?
NO NO
YES YES
NO
NO
YES
NO
YES
YES
Defective indoor
unit PCB
Is the louver
operated with the remote
controller
Does the louver
link push the LS till
a click sound is
heard?
Operate more than
1 min. later
It is normal
if it stops with
2 pushes on LS Turn off and back on again
the power and check the
motion of LS
Ajust LS lever and
check again
Defective LS
Replacement
Defective indoor unit PCB
Replacement
Replace LM
Note(1) LM: Louver motor
LS: Limit swich
Repair the wire
Normal
All of cooling,
blower heating, thermaldry
do not operate
Check FM
1
YES
YES
NO
NO
(1)
Check with the Hi, Me, Lo of blower
mode.
Defective indoor unit PCB
Replacement
Defective indoor unit PCB
Replacement
Is Voltage detected
between CNF
terminals?
Defective FM
1
, capacitor
(CF
1
) Replacement
When some modes only operate.