Haier HPM08-Nd2 Installation And Service Instructions Manual page 101

Fault code
Fault cause
Troubleshooting
Check if the sensor is
accurately and securely
plugged into the control
board.
Measure the resistance value
of the sensor and determine
whether the sensor is normal
based on its resistance range.
The sampling circuit of the
control board is damaged.
Fault code
Fault cause
Troubleshooting
Check if the sensor is
accurately
plugged into the control
board
Measure the resistance value
of the sensor and determine
whether the sensor is normal
based on its resistance range
The sampling circuit of the
control board is damaged
E3 Water tank temperature sensor failure
1. The sensor has a short circuit or open circuit
2. The sampling circuit of the control board is damaged
Automatic recovery after fault elimination
Diagonsis
Yes
Yes
Yes
E4 Ambient temperature sensor failure
1. The sensor has a short circuit or open circuit
2. The sampling circuit of the control board is damaged
Automatic recovery after fault elimination
Diagonsis
and securely
Yes
Yes
95
No Reconnect the sensor securely
No
Replace the control board
No
Reconnect the sensor
No
Replace the control board
Solutions
Replace the sensor
Solutions
securely
Replace the sensor