Troubleshooting - Haier MRV SII AU042FNEUA Service Manual

18. Troubleshooting

[20~24] Temperature sensor failure
ensor terminal is fixed well
[28, 29] High/low pressure sensor failure
Yes
If sensor resistor
/characteristic is proper
Yes
Check if PCB is faulty,
if yes, replace it
If sensor terminal is fixed well
Yes
If voltage between red terminal
and black terminal is 5V when
testing pressure sensor by
multimeter
Yes
If voltage between white terminal and black
terminal is 0.5V~3.5V when testing pressure
sensor by multimeter
No
Replace connecting board
No
Reconnect
No
Replace sensor
No
Reconnect
No
Replace PCB
Yes
Replace pressure sensor
50