44
Compressor stopped due
to anti-freezing protection
(Cooling)
Insufficient water flow.
If water pump or water flow switch is failure,
check if necessary, repair or replace.
There is gas in the water loop.
Discharge gas.
There is something wrong with the
sensor.
If fault is confirmed, replace it.
The compressor stopped
because of high pressure
protection
Excessive exhaust pressure.
See "Excessive exhaust pressure."
High pressure switch fault.
Check for faults, repair or replace.
The compressor stopped
because the motor was
overloaded
Excessive exhaust pressure or suction
pressure.
See
"Excessive
exhaust
pressure"
and
"Excessive suction pressure."
High or low voltage, single phase or
phase imbalance.
Check that the voltage is not more than or less
than 20V of rated voltage.
Short circuit of motor or terminal.
Check corresponding resistance of each
terminal of the motor.
Overload element fault.
Replace it.
Compressor stops due to
built-in temperature
sensor or exhaust
temperature protection
Voltage is too high or too low.
Check that the voltage is not more than or less
than 20V of rated voltage.
Excessive exhaust pressure or low
suction pressure.
See "Excessive exhaust pressure" and "Low
suction pressure."
Component fault.
Check the built-in temperature sensor when the
motor is cooled.
The compressor stopped
because of low pressure
protection
The front (or back) filter of the EEV is
blocked.
Replace filter.
Low pressure switch fault.
If defective, replace it.
Low suction pressure.
See "Low suction pressure."
Abnormal compressor
noise
The liquid refrigerant flows into the
compressor from the evaporator and
produces liquid shock.
Adjust refrigerant charge.
Compressor aging.
Replace the compressor.
There is noise
The fastening screw on the panel is
loose.
Tighten all parts.
Compressor does not
start
The overcurrent relay will jump and the
safety will burn out.
Replace the damaged components.
The control circuit is not on.
Check the wiring of control system.
High pressure protection or low
pressure protection.
See front suction and exhaust pressure fault
section.
The contactor coil is burnt out.
Replace the damaged components.
Power phase sequence connection
error.
Reconnect and adjust any two connections in
the three phases.
Water system failure, water flow switch
is out of line.
Check the water system.
Summary of Contents for ccHPWH Series
Page 11: ...8 III Product specification 1 Dimensions Unit inch ccHPWH275 S ccHPWH275 D ...
Page 12: ...9 ccHPWH550 S ccHPWH550 D ...
Page 26: ...23 2 Wiring diagram ccHPWH275 S ccHPWH275 D ...
Page 27: ...24 ccHPWH550 S ccHPWH550 D ...
Page 42: ...39 Schematic diagram of control wiring and code dialing of each module ...
