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Part Number: 000015430 Rev 02 5/20 173
NOTE: A head pressure control valve that will not bypass,
will function properly with condenser air temperatures
of approximately 70°F (21°C) or above. When the
temperature drops below 70°F (21°C), the head pressure
control valve fails to bypass and the ice machine
malfunctions. Lower ambient conditions can be simulated
by rinsing the condenser with cool water during the freeze
cycle.
Condition Probable Cause
Corrective
Measure
Discharge Pressure - High
Liquid Line Temperature
- Hot
Valve stuck in
bypass
Replace valve
Discharge Pressure - Low
Liquid Line Temperature
- Cold
Valve not
bypassing
Replace valve
Discharge Pressure - Low
Liquid Line Temperature
- Hot
Ice Machine Low
on Charge
Refrigerant
Charge
Verification
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