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TROUBLESHOOTING REFRIGERATION SYSTEM
Trouble Probable Cause Remedy
COMPRESSOR DOES NOT
OPERATE.
A. Ice bank sufficient. A. Refrigeration not called for.
B. Unit power cord unplugged,
power switch (if applicable) in
“OFF” position, or drop-in
refrigeration assembly power
cord unplugged.
B. Plug in power cord(s) or place
Unit power switch in “ON”
position.
C. No power source (blown fuse
or tripped circuit breaker).
C. Replace fuse or reset circuit
breaker. (NOTE: Fuse or circuit
breaker are not part of unit).
D. Inoperative Unit power switch
(if applicable) or power cord
unplugged.
D. Replace power switch or plug Unit
power cord into electrical outlet.
E. Low voltage. E. Voltage must be at least 103 volts
(115 VAC unit) or 208 (230 VAC
unit) at compressor terminal when
compressor is trying to start.
F. Loose, disconnected, or
broken wiring.
F. Tighten connections or replace
broken wiring.
G. Overload protector cut out;
overheated compressor.
Condenser fan motor not
operating as required.
G. Compressor will cool enough to
restart. Do not overdraw cooling
capacity of Unit. Refer to
“CONDENSER FAN MOTOR
NOT OPERATING” in this
section.
H. Inoperative overload protector
or start relay.
H. Replace inoperative part.
I. Inoperative ice bank control
probe.
I. Replace ice bank control.
J. Inoperative compressor. J. Call service person.
COMPRESSOR WILL NOT
STOP AFTER SUFFICIENT
ICE BANK IS PRODUCED.
(NOTE: ICE BANK SHOULD
JUST COVER CONTROL
BULB).
A. Ice bank control cap tube
kinked or broken.
A. Replace ice bank control.
B. Ice bank control stuck in
closed position.
B. Replace ice bank control.