MovinCool Office Pro 63 Service Manual User Manual
Page 39
Repair Section
39
(2) Unit does not start (operate)
< NOTE >
• In this case, there is a possibility of safety device activating due to the clogged air filter. So make
sure to first clean the air filter and then start up again to confirm if the problem lies with the air filter.
• Check the installation site for operating temperature and installation space (unobstructed airflow).
• Check the phase sequence of the power source.
If the phase sequence is reversed, the control panel display, and reverse phase protector LED in
the control box turn off.
Possible Cause
Remedy
Checking Area
Cause
Does not
operate at
all
Control
Panel
display turns
off.
1. Voltage.
Power failure.
Repair power.
2. Phase sequence of the
power source.
Phase sequence is
reversed.
Change any 2 of the 3 wires
for power source wires.
3. Ground fault breaker trip.
Ground fault or defective
ground fault breaker.
Repair ground fault section.
Reset or repair breaker.
4. Fuse.
Fuse blown.
Repair shorting section.
Replace fuse on the relay
board.
Replace fuse of the
transformer secondary side.
5. Transformer.
Defective transformer.
Replace transformer.
6. Reverse phase protector.
Open circuit or insufficient
contact.
Replace reverse phase
protector.
Symptom