1. EEV has blocked or pipe system is
jammed
2. Motor speed is abnormal or motor
has damaged
3. Gas leakage
1. Check the EEV and piping
system Check the motor
2. Through the high pressure
gauge to check the pressure
value
3. Check refrigeration system
1. Water flow switch is damaged
2. No/ Insufficient water flow.
1. Change the water flow switch
2. Check the filtration pump or
the waterway system
Over heating
protection for water
temperature (T2) in
heating mode
1. Low water flow
2. Water flow switch is stuck and the
water supply is cut off
3. T2 sensor is abnormal
1. Check the water way system
2. Check the filtration pump or
water flow switch
3. Check T2 sensor or replace
T6 Exhaust too high
protection
1.Lack of gas
2.Low water flow
3.Piping system has been blocked
4.Exhaust temp. Sensor failure
1. Check the high pressure
gauge, if too low, fill with some
gas
2. Check the waterway system
and filtration pump
3. Check the piping system if
there was any block
4. Change a new exhaust temp.
sensor
1. Wire connection is not good, or
damaged signal wire
2. Controller failure
1. Check and re-connect the
signal wire
2. Change a new signal wire
3. Turn off electricity supply and
restart machine
4. Change anew controller
Compressor current
protection
1. The compressor current is too large
instantaneously
2. Wrong connection for compressor
phase sequence
3.Compressor accumulations of liquid
and oil lead to the current becomes
larger
4. Compressor or driver board damaged
5. The water flow is abnormal
6. Power fluctuations within a short time
1. Check the compressor
2. Check compressor phase
3. Check if the power in the
normal range
4. Check the phase sequence
connection
5. Check the waterway system
and filtration pump
6. Check mains power input
8.
8.8.
Troubleshooting
TroubleshootingTroubleshooting
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