59
F13
IPM Overheat Stop
1. Check the fans are running or not.
2. Check the installation distance and space.
3. Leave enough distance and space to make heat pump have a good transfer heating condition.
4. Clean the finned heat exchanger.
5. If they are OK, replace a new compressor driver board.
F15
Input voltage Lacking Phase
1. Check the phase of power supply R/S/T to compressor driver board.
2. If it’s OK, replace a new compressor driver board.
F16
Compressor weak magnetic
protection alarm
1. Check the refrigeration system.
2. If it’s OK, replace a new compressor driver board.
F17
Temperature fault of drive board
1. Check the connection of heat sink temp. sensor.
2. Check the resistance of heat sink temp. sensor.
3. If they are OK, please replace a new heat sink and heat sink temp. sensor.
F18
IPM Current Sampling Fault
1. Check ambient temp. and inlet/outlet water temp.
2. Check high/low pressure and discharge temp. and suction temp.
3. Check EEV step.
4. Check the compressor frequency and current.
5. If they are OK, replace a new compressor driver board.
F20
IGBT Power Device Overheat Alarm
1. Check the fans are running or not.
2. Check the installation distance and space.
3. If they are OK, please replace a new compressor driver board.
4. Leave enough distance and space to make heat pump have a good transfer heating condition.
5. Clean air to fin heat exchanger.
F22
AC input over current protection
alarm
Only in single phase unit. Restart the unit.
1. Check if there is electric leakage.
2. If still have the failure, replace a new drive board.
F23
EEPROM Fault Alarm
1. Check the connection;
2. Replace a new driver board;
F24
Destroyed EEPROM Activation Ban
Alarm
F25
LP 15V Under load Fault
1. Check the power supply is stable or not, and restart unit.
2. If the problem still on, please replace a new drive board.
F26
IGBT Power Device Overheat Fault
1. Check the fans are running or not
；
2. Check the installation distance and space;
3. Leave enough distance and space to make heat pump have a good transfer heating condition;
4. Clean the finned heat exchanger.
5. If they are OK, please replace a new driver board;
F031
DC Fan Motor 1 Failure
1. Turn off the unit and check the connection.
2. Restart and check if the motor is running normal or the error happens again.
3. Replace a new fan motor.
F032
DC Fan Motor 2 Failure
