72 OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
4.2 TROUBLESHOOTING
Symptom Probable Cause Recommendation
Blower Fails to Start a. Power failure. Check main voltage power source input
cable.
b. Control transformer circuit breaker
tripped.
Check for short circuit or ground fault; if
none, reset circuit breaker.
c. Defective contactor. Repair or replace.
d. Thermal overload tripped. Reset overload and check amperage of
motor. Compare to setting on overload
and adjust to FLA. All direct-drive motors
are internally protected and do not require
overload reset.
Control is Erratic Wiring improperly connected or
broken.
Check wiring against electrical drawing.
Condenser Pressure
Too High
a. Incondensable gas or air in system. Recover system and recharge. Replace
drier/strainer. Evacuate to 50 microns and
recharge.
b. Condenser air intake is blocked. Remove debris and clean condenser.
c. Overcharge of refrigerant. Reclaim excess refrigerant from system.
d. Low water flow to water-cooled
condenser.
Reset, then determine cause and fix.
e. Condenser fan is not operating. Check pressure/temperature operating
switches and motor. Replace as needed.
f. Water/glycol temperature too high. Check flow and operation of dry cooler.
g. Condenser pressure regulating valve
setting too high.
Adjust to obtain correct pressure.
h. Flow of water/glycol too low. 1. Check glycol solution level and
concentration.
2. Valves not open or partially open.
Repair/replace as needed.
3. If air is present: bleed system.
4. Check all strainers and clean if needed.
i. Water/glycol solution not mixed prior
to adding to system.
Remove solution and premix. Refill
system.
Table 14. Troubleshooting Table, Continued
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