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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 service, 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 not Cooling
No Power
Check Power Source and
Electrical Connections
Loss of Refrigerant
Locate and repair leak
Evaporator or Condenser
Replace Motor, Capacitor or
Blower not operating
entire Assembly
Filter clogged
Clean or replace Filter
Clogged Evaporator or
Clean Coil
Condenser Coil
Low Temperature Control
Lower setting until unit starts
(Thermostat) improperly set
Low Temperature Control
Replace Thermostat or Relay
(Thermostat) defective
when applicable
Failed Compressor
Replace Compressor
Ice on Evaporator Coil
Insufficient Heat Load or Unit
Contact Kooltronic
Oversized for Application
Failed Evaporator Blower
Replace Evaporator Blower
Motor or Assembly
Clogged Evaporator Coil
Clean Coil
Condensate draining
Enclosure not properly sealed
Check and seal all openings
continuously
Excessive opening of Enclosure
Eliminate the frequency of
door opening
Excessive vibration
Defective Motor in Blower
Replace Motor
Defective Wheel in Blower
Replace Wheel
Compressor Loose
Tighten Mounting Bolts
Compressor Inoperative
Low line Voltage
Check Nameplate Voltage
against supply
Loss of Compressor Oil
Replace Compressor
Loss of Refrigerant
Locate and repair leak
Failed Compressor Capacitor
Replace Capacitor
Thermal Overload
Contact Kooltronic
Power interruptions
Allow Compressor time to reset
Refrigerant or Oil leaks
Crack or pin hole in tubing or
Replace tubing or rebraze joint
brazed joint
