Welbilt Delfield 4000P Series, Installation, Operation And Maintenance Manual

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Part Number: 9294045C 03/22 17
Section 5
Troubleshooting
Problem -> Cause -> Correction Chart
Problem Cause Correction
Cabinet not
running
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Power cord unplugged. Plug in power cord.
Thermostat set too high. Set thermostat to lower temperature.
Main power switch turned off. Turn main power switch on.
Cabinet in defrost cycle.
(Freezer models)
Wait for defrost cycle to finish.
Condensing
unit runs for
long periods or
continuously
Excessive amount of warm product placed in
cabinet.
Allow adequate time for product to cool down.
Prolonged door openings or door(s) ajar. Make sure door(s) are closed when not in use. Avoid
prolonged door openings.
Door gasket(s) not sealing properly. Check gasket condition. Adjust door or replace gasket if
necessary.
Dirty condenser coil. Clean the condenser coil.
Evaporator coil iced over. Turn unit off and allow coil to defrost.
Make sure thermostat is not set too cold.
Also, check gasket condition.
Cabinet
temperature is too
high
Thermostat set too high. Set thermostat to lower temperature.
Poor air circulation in cabinet. Re-arrange product to allow proper air circulation.
Exterior thermometer is out of calibration. Re-calibrate thermometer.
Excessive amount of warm product placed in
cabinet.
Allow adequate time for product to cool down.
Prolonged door openings or door(s) ajar. Make sure door(s) are closed when not in use.
Avoid prolonged door openings.
Dirty condenser coil. Clean the condenser coil.
Evaporator coil iced over. Turn unit off and allow coil to defrost.
Make sure thermostat is not set too cold.
Also, check gasket condition.
Cabinet is noisy Loose part(s). Locate and tighten loose part(s).
Refrigerator is
freezing product
Thermostat is set too low. Set thermostat to higher temperature.
Dirty condenser coil. Clean the condenser coil.
Not enough cabinet clearance for proper
refrigeration system operation.
Move cabinet or make other adjustments to gain proper
cabinet clearances.
Compressor will
not start
Low voltage to cabinet. Check and correct incoming voltage to cabinet.