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Troubleshooting
Model C723
General Troubleshooting Guide
PROBLEM CAUSE REMEDY
1. Compressor will not run. a. The power switch is in the “OFF”
position.
a. Place the switch in the “ON”
position.
b. An error has been made in key
pad selection.
b. Press the correct key for AUTO
operation.
c. The contactor is faulty. c. Replace the contactor.
d. The compressor has burned out. d. Replace the compressor.
e. The fuse or circuit breaker has
blown.
e. Replace the fuse, or turn on the
breaker.
f. Tripped overload (compressor). f. Place the power switch in the
“OFF” position. Allow the
compressor to cool and the
overload to close before returning
the power switch to the “ON”
position.
g. Off on reset (beater motor). g. Press the reset button.
2. Unit operates long (cycles off on
the 11 minute safety timer.
a. Dirty condenser. a. Clean the condenser.
b. Scraper blades are worn. b. Replace scraper blades.
c. Shortage of refrigerant. c. Repair the leak and recharge the
unit.
d. Air in the system. d. Purge and recharge the system.
3. Head pressure is too high. a. Condenser is dirty. a. Clean condenser.
b. Water valve is out of adjustment or
is restricted.
b. Check the adjustment and the
water supply.
c. Insufficient air space around unit. c. Make sure there is sufficient air
space surrounding the unit (see
“Specifications”).
d. Refrigerant overcharge. d. Correct refrigerant charge.
e. Blower is faulty. e. Replace the blower.
4. Head pressure is too low. a. Refrigerant shortage. a. Repair leak and recharge.
5. Liquid line is hot. a. Shortage of refrigerant. a. Repair leak and recharge.
6. Excessive mix leakage through
the rear of the unit into the drip
pan.
a. Worn or missing drive shaft seal. a. If worn, nicked, or missing, replace
the drive shaft seal.
b. Inadequate lubrication. b. Lubricate properly.
c. Drive shaft rotates forward. c. Check gear alignment.
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