Safety Caution; Error Mode Summery - Hisense WFU7012 Service Manual

9. TROUBLESHOOTING

9.1 SAFETY CAUTION

1. There's built-in 220-240V AC and DC power in output terminal of PCB in
common. Be careful electric shock when disconnecting parts while trouble
shooting. (wear electro static discharge gloves when working.)
2. After cutting off the power when changing PCB, disconnect or assemble.
3. Be careful static when handling PCB, and use electro static discharge plastic
pack when delivering or keeping it.

9.2 ERROR MODE SUMMERY

In case of any abnormal conditions are detected during running, turn off all loads
except for door lock, and then the buzzer sounds to give an alarm.
ERROR
1 WATER INLET ERROR
2 UNBALANCE ERROR
3 DRAIN ERROR
4 OVERFLOW ERROR
5 FWL SENSOR ERROR
6 DOOR LOCK ERROR
SYMPTOM
♦ Correct water level (41.85kHz) is not reached within 4
minutes
♦ The load is too small.
♦ The appliance is tilted.
♦ Laundry is gathered to one side.
♦ Non distributable things are put into the drum.
♦ Not fully drained within 6 minutes.
♦ Water is overflowing.(water level frequency is over 36.8kHz).
♦ If F24 is displayed, the drain pump will operate to drain the
water automatically.
♦ The FWL sensor is out of order.
♦ When water level frequency maintain condition of below
10 kHz and over 30 kHz.
♦ Door not all the way closed.
♦ Loose electrical connections at Door lock and PCB.
♦ The Door lock is out of order.
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CAUSE