Haier HAMTP54MB1 Manuel D'instructions page 27

8. Failure Display and Inspection
The induction hob is equipped with a self diagnostic function. With this test the technician is able to
check the function of several components without disassembling or dismounting the hob from the
working surface.
Troubleshooting
For zone 1 & 2
Problem Possible causes
E1,E2,E7,C1 Temperature sensor failure
E3,E4
Temperature sensor of the IGBT failure.
EU
The connection between the display
board and the main board is fail
EL,EH Abnormal supply voltage
C3 Temperature sensor of the ceramic glass
plate Is high
C2 Temperature sensor of the IGBT
Is high
For zone 3 & 4
1) Failure code occur during customer using & Solution;
Failure code
Supply voltage is above the rated
EL
voltage.
Supply voltage is below the rated
EH
voltage.
High temperature of ceramic plate
C1,C3
sensor .
High temperature of IGBT .（1#）
C2
Ceramic plate temperature sensor
E2
failure- -short circuit.
Ceramic plate temperature sensor
E1
failure--open circuit.
Ceramic plate temperature sensor
E7
failure—invalid .
Temperature sensor of the IGBT failure -
E4
short circuit .
Temperature sensor of the IGBT failure -
E3
open circuit.
Problem
Auto-Recovery
No Auto-Recovery
26
What to do
Please contact the supplier.
Please contact the supplier.
Please contact the supplier.
Please inspect whether power
supply is normal.
Power on after the power
supply is normal.
Please restart after the
induction hob cools down.
Please restart after the
induction hob cools down.
Solution
Please inspect whether power supply is
normal.
Power on after the power supply is
normal.
Wait for the temperature of ceramic
plate return to normal.
Touch "ON/OFF" button to restart unit.
Wait for the temperature of IGBT return
to normal.
Touch "ON/OFF" button to restart unit.
Check whether the fan runs smoothly;
if not , replace the fan.
Check the connection or replace the
ceramic plate temperature sensor.
Replace the power board.