MovinCool CM12 Service Manual - Manual (Page 40)

Repair Section
40
< NOTE >
*1 :To RESET, reset power source or turn the wall thermostat off and on.
Unit does
not operate. 2 Drain hose Drain hose clogged
(for internal drain pump). Remove any blockage or excessive
kinks preventing water flow.
RESET
*1 .
Drain hose trap position is too
high to pump up condensation
water (for internal drain pump). Improve hose installation.
(Refer to the operation manual of this
unit.)
RESET
*1 .
Internal drain pump Internal drain pump is not
working. Reconnect the internal drain pump
and check connection.
RESET
*1 .
If the internal drain pump still does
not work, replace it.
3 Refrigeration system Refrigeration system problem. Check for leakage.
Check compressor relay.
Check for refrigerant blockage.
RESET
*1 .
4 Fire alarm system Signal is input from the fire
alarm. Check the fire alarm system and
confirm there is no signal input to the
unit, then RESET
*1 .
Condition
Alarm
Pattern
Check Area Possible Cause Remedy