Midea MSR1-24HRDN1-QC2W Service Manual page 32

Is the indoor temperature
and evaporator sensor
connector and connection
good?
Replace the sensor and
check if E6 display again?
9.2.5 P0(Inverter module over-strong current protection) diagnosis and solution.
Is all connections on PCB
and between PCB and
compressor good?
Replace the outdoor PCB
and then repower on. Is
the failure cleared?
9.2.6 P1(over voltage or too low voltage protection) diagnosis and solution.
Is the power supply good?
9.2.7 P2(temperature protection of compressor top) diagnosis and solution.
YES
YES
YES
NO
Repair the connector and
reconnect
YES
Replace the indoor PCB
NO
Repair or correct the
connector or connection.
NO
Check the compressor
NO
Be sure the power supply is
normal when using the units
Replace the outdoor e-box.
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