Mitsubishi Heavy Industries FDT Series Technical Manual page 433

Error code
None
Remote controller:
3.
• Faulty outdoor control PCB
Note:
RUN light TIMER light
Indoor
display – –
Green LED Red LED
Outdoor
control PCB
Stays OFF
Is
AC220/240V
detected between 1 and
2 on the terminal block
of indoor
unit?
YES
Are fuse OK
(250V 3.15A)?
YES
- - 432 432
Content
NO
Is
AC380/415V
for 3-phase unit detected
between 1, 2 and 3 on the teminal
block of outdoor unit or is AC220/240V
for 1-phase unit detected between
1 and 2 on the terminal
block of outdoor
unit?
YES
NO
- -
'12 • PAC-T-173
NO
PCB Replace.