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21
TROUBLE
CAUSE
REMEDY
4.16 Compressor does not start (no
hum), gas cooler fan does not run, and
no ice bank.
A. There is a five (5) minute compressor
and condenser fan delay.
B. Ice bank probe not completely
submergered.
C. Circuit breaker or fuse tripped.
D. Inadeequate Voltage
E. PCB malfunctioning
F. Incorrect Wiring
G. Faulty ice bank probe.
H. Transformer failure.
I. Ice bank probe not connected
properly to PCB.
A. Allow for five (5) minute delay to lapse.
B. Fill water reservoir until water flows
from overflow tube.
C. Reset breaker or replace fuse.
If problem persists:
1. Determine reason and correct.
2. Electrical circuit overloaded; switch to
another circuit.
D. Measure voltage across common and
run terminal on compressor.Voltage must
not drop below 90% of rated voltage.
E. See Section 6.
F. Refer to wiring diagram and correct.
G. Replace ice bank probe.
H. Reset transformer circuit breaker. If
breaker pops again, refer to Sec. 4.23.
I. Connect ice bank probe to PCB.
4.17 Compressor does not start (no
hum), but gas cooler fan motor runs.
A. Compressor relay capacitors or
overload malfunctioning.
B. Inadequate voltage.
C. Incorrect wiring.
D. Compressor malfunctioning.
A. Replace compressor relay capacitors
or overload.
B. Measure voltage across commom and
run terminal on compressor. Voltage must
not drop below 90% of rated voltage.
C. Refer to wiring diagram and correct.
D. Have the unit repaired by a qualified
service technician.
4.18 Compressor does not start but
hums.
A. Inadequate voltage.
B. Incorrect wiring.
C. Starting relay capacitors
malfunctioning.
D. Compressor malfunctioning.
A. Measure voltage across common and
run terminal on compressor. Voltage must
not drop below 90% of rated voltage.
B. Refer to wiring diagram and correct.
C. Replace starting relay or capacitors.
Be sure to use correct rating. Failure to
use correct rating will cause compressor
failure.
D. Have the unit repaired by a qualified
service technician.
