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Troubleshooting - Haier AU042FPERA Service Manual

Mrv s" series (4-6hp)
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16. Troubleshooting

[20-23] Temperature sensor failure
If sensor terminal is fixed well
/characteristic is proper
Check if PCB is faulty,
[122] Radiator temp. sensor of transducer abnormal
Check if connection between temp.
sensor and inverter board
Measure if temp. sensor resistor is
normal
Replace inverter control board
If sensor resistor
if yes, replace it
Yes
Yes
Reconnect
Replace sensor
No
No
45
Adjust connection
Replace sensor

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