Pfannenberg DTS Air Conditioner - Manual (Page 11)

Operating and Installation Instructions DTS Air Conditioner
08.2001 085 408 022 11
12 Trouble-Shooting
If the Air Conditioner should require service, we have compiled a trouble-shooting chart to assist your
service personnel. If additional assistance is required please contact Pfannenberg Inc.
Problem Possible Cause(s) Solution
Unit not cooling No Power Check Power Source and
Electrical Connections
Loss of Refrigerant Locate and repair leak
Evaporator or Condenser Fan
not operating Replace motor, Capacitor or
entire Assembly
Filter clogged Clean or replace Filter
Dirty Evaporator or Condenser Clean Device
Thermostat improperly set Lower setting until unit starts
Thermostat defective Replace Thermostat or Relay
Failed Compressor Replaced Compressor
Ice on Evaporator Coil Insufficent Heat Load or Unit
Oversized for Application Contact Pfannenberg Inc.
Failed Evaporator Fan Replace Evaporator Fan Motor
or Assembly
Dirty Evaporator Clean Device
Condensate draining
continuously Enclosure not properly sealed Check and seal all openings
Excessive opening of Enclosure Eliminate the frequency of door
opening
Thermostat improperly set Setting on 35°C / 95°F
Condensate fails to drain
off Malfunction on condensate
overflow Clean overflow and/or check that
hose is connected without kinks
Excessive vibration Defective Fan Replace Fan
Compressor Loose Tighten Mounting Bolts
Compreesor Inoperative Low line Voltage Check Nameplate Voltage
Loss of Compressor Oil Replace Compressor
Loss of Refrigerant Locate and repair leak
Failed Compressor Capacitor Replace Capacitor
Thermal Overload Contact Pfannenberg Inc.
Power interruptions Allow Compressor time to reset
Refrigerant or Oil leaks Crack or pin hole in tubing or
brazed joints Replace tubing or rebraze joint