14
.
IX. Trouble-Shooting
Each Kooltronic Air Conditioner is engineered for performance and built for reliability. They are designed to
require only routine maintenance. If your air conditioner should require warranty service, please
contact Kooltronic. If you require service out of warranty, we have compiled a trouble-shooting chart
to assist your service personnel. If additional assistance is required contact Kooltronic at (609) 466-3400
.
Problem
Cause
Solution
Unit does not run.
No Power.
Check Power Source and electrical connection.
Check unit ON-OFF switch (UL Listed units only).
Check unit power cord connection to terminal block.
After initial 15 minute energization
Return temperature is Normal Operation.
of air conditioner, compressor and
between Thermostat set Check return air temperature.
condenser fan do not run.
point and differential
Check sensor connection on Thermostat.
(
75°F to 86°F).
Unit not cooling. (Temperature
Failed Thermostat
Check Thermostat and Relay wire connections.
difference between return and
or Relay.
Replace Thermostat or Relay.
supply air is less than 10°F).
Evaporator Blower is running.
Low Line Voltage.
Check Nameplate Voltage against supply Voltage.
Compressor and Condenser Blower
do not run. Return temperature is Failed Compressor.
Check Compressor wire connections.
above set point plus differential (90°F).
Check Compressor overload.
Check Compressor Capacitor.
Replace Compressor.
D. Refrigerant Loss
Kooltronic Air Conditioners are subjected to a series of tests to detect refrigerant leaks, during and after
manufacture. It is possible that shipping or other damage, or microscopic leaks over a long period, may result
in the need for replenishment of refrigerant charge.
When it has been verified by a Certified EPA Technician
that a refrigerant shortage does exist, the leak must be repaired. Then the unit may be evacuated and
recharged in the field by a Certified EPA Technician only.
CAUTION
E. Relocation
If your Kooltronic Air Conditioner has to be moved to another location by truck, the following precautions
should be taken:
■
De-mount the air conditioner from the equipment, controller or enclosure.
■
Conform to the applicable provisions of PROCEDURE FOR PROPER PACKING AND SHIPMENT OF
KOOLTRONIC AIR CONDITIONERS in this manual under
Section III. "PRODUCT HANDLING".
Refer to the data on the unit nameplate which specifies the type of
refrigerant and the amount of charge in ounces.
