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IX. Trouble-Shooting
Each Kooltronic Air Conditioner is engineered for performance and built for reliability. They are designed to
require no routine maintenance other than the cleaning of ambient air filters. 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
Unit not Cooling
Ice on Evaporator Coil
Condensate draining
continuously
Excessive vibration
Compressor Inoperative
Refrigerant or Oil leaks
Condensate on the outside Insufficient Heat Load or Unit
surface of the Enclosure
Cause
No Power
Loss of Refrigerant
Evaporator or Condenser
Blower not operating
Filter clogged
Clogged Evaporator or
Condenser Coil
Low Temperature Control
(Thermostat) improperly set
Low Temperature Control
(Thermostat) defective
Failed Compressor
Insufficient Heat Load or Unit
Oversized for Application
Failed Evaporator Blower
Clogged Evaporator Coil
Enclosure not properly sealed
Excessive opening of Enclosure
Defective Motor in Blower
Defective Wheel in Blower
Compressor Loose
Low line Voltage
Loss of Compressor Oil
Loss of Refrigerant
Failed Compressor Capacitor
Thermal Overload
Power interruptions
Crack or pin hole in tubing or
brazed joint
oversized for application
Solution
Check Power Source and
Electrical Connections
Locate and repair leak
Replace Motor, Capacitor or
entire Assembly
Clean or replace Filter
Clean Coil
Lower setting until unit starts
Replace Thermostat or Relay
when applicable
Replace Compressor
Contact Kooltronic
Replace Evaporator Blower
Motor or Assembly
Clean Coil
Check and seal all openings
Eliminate the frequency of
door opening
Replace Motor
Replace Wheel
Tighten Mounting Bolts
Check Nameplate Voltage
against supply
Replace Compressor
Locate and repair leak
Replace Capacitor
Contact Kooltronic
Allow Compressor time to reset
Replace tubing or rebraze joint
Contact Kooltronic
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