MovinCool Classic 40 Service Manual - Manual (Page 45)

Repair Section
45
6.3 Troubleshooting Chart
• To accurately troubleshoot the problem, it is important to carefully confirm the nature of the
problem. Typical problems are:
- Insufficient cooling.
- Unit does not start (operate).
- Overflow of drain water.
- Abnormal noise or vibrations.
- Others.
(1) Insufficient cooling
• Cooling system problem generally results from electrical or mechanical components such as fan
motor, compressor, control switch.
< 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 display of the control panel and the LED of the reverse
phase protector turn off.