Haier WQP12-B9227E, Technical & Service Manual, Page: 33 / 38

E6&E7 tree Inspection
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E6
Open-circuit failure of
thermistor
Check whether the NTC
circuit is correct or not.
(mentioned in section 4)
Reconnect the wire of
Flowmeter circuit and
check again
Not
solve the problem
OK
Replace the NTC to
solve problem
Still wrong
E7
Short-circuit failure of
thermistor
Check whether the NTC
circuit is correct or not.
(mentioned in section 4)
Reconnect the wire of
Flowmeter circuit and
check again
Not
solve the problem
OK
Replace the NTC to
solve problem
Still wrong
If the problem has not been solved through all the inspection mentioned above, maybe the
PCB has a malfunction. So, replace PCB and test again.
Caution:
Because the real situation is unpredictable, inspection trees mentioned in this manual are
for reference only.
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