Table of Contents
Advertisement
Error code causes and solutions. – part 2
Error code
Description
(Hexadecimal)
Thermistor error (compressor suction
30
gas temperature)
Thermistor error (compressor suction
31
gas temperature)
Thermistor error (coil gas temperature
32
(Note 2)
1)
Thermistor error (coil gas temperature
33
(Note 2)
2)
35
Thermistor error (reactor humidity)
40
High-pressure sensor error
41
Low-pressure sensor error
Chilled (warm) water inlet pressure
4A
sensor error
Chilled (warm) water outlet pressure
4B
sensor error
4C
Pump suction press sensor err
50
Freeze protection
51
High temperature prevention
52
Low flow rate protection
53
Water temperature inlet/outlet reversal
5A
Subnormal pump suction press
5B
Chilled (warm) water pressure error
60
High pressure fault
61
Low pressure error 1
62
Low pressure error 2
63
Compressor discharge gas overheat
(continued)
error
Cause
Same as "Thermistor problem (chilled (warm) water inlet
temperature)"
Same as "Thermistor problem (chilled (warm) water inlet
temperature)"
Same as "Thermistor problem (chilled (warm) water inlet
temperature)"
Same as "Thermistor problem (chilled (warm) water inlet
temperature)"
Same as "Thermistor problem (chilled (warm) water inlet
temperature)"
Open circuit condition or loose connection in control
wiring.
Pressure sensor error
Same as "High-pressure sensor error"
Same as "High-pressure sensor error"
Same as "High-pressure sensor error"
Same as "High-pressure sensor error"
Rapid load fluctuation
Clogged strainer
Pump error
Inverter error
Air accumulation
The water heat exchanger is dirty
Water temperature thermistor error value
Incorrect flow control parameter.
Same as "Freeze protection"
Rapid load fluctuation
Clogged strainer
Pump error
Inverter error
Air accumulation
The water heat exchanger is dirty
Water pressure sensor error value
Inappropriate flow control parameter
The inlet and outlet pipes have been reversed.
Applicable water temperature thermistor error value
Rapid increase / decrease in water flow rate.
Open circuit in wiring, loose terminal
Pressure sensor fault
Rapid pressure fluctuation
Water pressure sensor error value
Fan motor error (cooling mode).
Fan IPDU board error (cooling mode).
Short circuit (cooling mode).
The air heat exchanger is dirty.
Water temperature increased/decreased rapidly (heating
mode).
Overcharge of refrigerant after maintenance
Four-way valve error
Refrigerant leak
Expansion valve error
Water temperature increased/decreased rapidly (cooling
mode).
Rapid increase / decrease in water flow rate.
Fan motor error (heating mode).
Short circuit (heating mode).
Low-pressure sensor error value
Four-way valve error
Insufficient antifreeze concentration.
Refrigerant leak
Expansion valve error
Water temperature increased/decreased rapidly (cooling
mode).
Rapid increase / decrease in water flow rate.
Low-pressure sensor error value
Four-way valve error
Insufficient antifreeze concentration.
Refrigerant leak
Expansion valve error
Compressor error
- 81 -
Required action
Same as "Thermistor problem (chilled (warm) water
inlet temperature)"
Same as "Thermistor problem (chilled (warm) water
inlet temperature)"
Same as "Thermistor problem (chilled (warm) water
inlet temperature)"
Same as "Thermistor problem (chilled (warm) water
inlet temperature)"
Same as "Thermistor problem (chilled (warm) water
inlet temperature)"
Repair wiring.
Replace pressure sensor.
Same as "High-pressure sensor error"
Same as "High-pressure sensor error"
Same as "High-pressure sensor error"
Same as "High-pressure sensor error"
Adjust water piping system (bypass control, etc.).
Clean strainer.
Replace pump.
Replace inverter.
Release air.
Clean the water heat exchanger (chemical cleaning).
Repair wiring, change thermistor.
Adjust flow control parameter.
Same as "Freeze protection"
Adjust water piping system (bypass control, etc.)
Clean strainer
Replace pump
Replace inverter
Release air
Clean the water heat exchanger (chemical cleaning)
Repair wiring , change water pressure sensor
Adjust flow control parameter
Repair the inlet and outlet pipes.
Repair wiring / change thermistor.
Same as "Low flow rate protection"
Repair the wiring.
Replace the pressure sensor.
Adjust water piping system (bypass control, etc.).
Repair wiring / change sensor.
Replace fan motor.
Replace fan IPDU board.
Remove cause of short circuit.
Clean the air heat exchanger.
Same as "High temperature prevention"
Charge unit to specified refrigerant amount.
Same as "Four-way valve error"
Repair leaks and charge refrigerant.
Replace expansion valve.
Same as "Freeze protection"
Same as "Low flow rate protection"
Replace fan motor.
Remove cause of short circuit.
Repair wiring / change sensor.
Same as "Four-way valve error"
Replenish antifreeze
Repair leaks and charge refrigerant.
Replace expansion valve.
Same as "Freeze protection"
Same as "Low flow rate protection"
Repair wiring / change sensor.
Same as "Four-way valve error"
Replenish antifreeze
Repair leaks and charge refrigerant.
Replace expansion valve.
Replace compressor.
Hide quick links:
Advertisement
Table of Contents
