Hydro-Pro 5, User And Service Manual

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60
temperature
protection
abnormal
2. Fan motor is abnormal or damaged
3. Fan blade is broken
4. The screw in the driver board is not
tight
driver board
2. Check if the motor speed is too low or
fan motor is damaged, replace it by a
new one if any failure.
3. Change the fan blade if it is broken
4. Check the screw on driver board
EE 20 Input power failure
The supply voltage fluctuates too
much
Check whether the voltage is stable
EE 21
Software control
exception
1. Compressor runs out of step
2. Wrong program
3. Impurity inside compressor causes
the unstable rotate speed
1. Check the main board or change a
new one
2. Update the correct program
3. Check the refrigeration system
EE 22
Current detection
circuit failure
1. Voltage signal abnormal
2. Driver board is damaged
3. Main board failure
1. Change a new main board
2. Change a new driver board
EE 23
Compressor start
failure
1. Main board is damaged
2. Compressor wiring error or poor
contact or unconnected
3. Liquid accumulation inside
4. Wrong phase connection for
compressor
1. Check the main board or change a
new one
2. Check the compressor wiring
according to the circuit diagram
3. Check the compressor or change a
new one
EE 24
Ambient
Temperature device
failure on Driver
board
Ambient Temperature device failure Change driver board or main board
EE 25
Compressor phase
failure
Compressors U, V, W are just
connected to one phase or two
phases.
Check the actual wiring according to the
circuit diagram
EE 26
Four ‐ way valve
reversal failure
1. Four ‐ way valve reversal failure
2. Lack of refrigerant (no detect when
TH2 or TH1 malfunction)
1. Switch to Cooling mode to check the
4 ‐ way valve if it has been reversed
correctly
2. Change a new 4 ‐ way valve
3. Fill with gas
EE 27
EEPROM data read
malfunction
1. Wrong EEPROM data in the
program or failed input of EEPROM
data
2. Main board failure
1. Re ‐ enter correct EEPROM data
2. Change a new main board
EE 28
The inter ‐ chip
communication
failure on the main
control board
Main board failure
1. Stop electricity supply and restart it
2. Change a new main board
PP 01
Inlet water
temperature sensor
failure d1 ‐ TH6
1. The sensor in open or short circuit
2. The wiring of sensor is loose
1. Check or change the sensor
2.Re ‐ fix the wiring of the sensors
PP 02
Outlet water
temperature sensor
1. The sensor in open or short circuit
2. The wiring of sensor is loose
1. Check or change the sensor
2.Re ‐ fix the wiring of the sensors