Haier AB422XCBAA - Troubleshooting: Sensor Failures; Troubleshooting: EEPROM Failures

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if sensor is fixed
well
Relocate
reconnect
no
2) Sensor failure
check if the wiring is
correct according to
wiring diagram
Is sensor short-circuit
or open-circuit?
Replace sensor
Is sensor resistance
acceptable?
Replace sensor
Is DC voltage between
both ends of sensor
near 5V or 0V?
Replace PCB
yes
yes
yes
yes
no
no
no
replace EEPROM
start
re-set
3) EEPROM failure
Is EEPROM in mainboard
inversely connected or in
poor contact?
no
Power on again to
check if failure is
eliminated
no
replace PCB
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