Midea MSY-09HRDN1-QC2 - Temperature Sensor Checks

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9.2.4 E3(indoor fan speed out of control) diagnosis and solution
9.2.5 E5(Open or short circuit of outdoor ambient or condenser temperature sensor) diagnosis
and solution.
9.2.6 E6(open or short circuit of indoor room or evaporator temperature sensor) diagnosis and
solution.
9.2.7 P0(IGBT over-strong current protection) diagnosis and solution.
Is the indoor temperature
and evaporator sensor
connector and
connection good?
Repair the connector and
reconnect
Replace the sensor and
check if E6 display
again?
NO
YES
Replace the.indoor PCB
YES
Is the outdoor
temperature sensor
connector and
connection good?
Repair the connector and
reconnect
Replace the sensor and
check if E5 display
again?
NO
YES
Replace outdoor e-box
YES
Is the
indoor fan motor
connector and
connection good?
Repair the connector and
reconnect
Is voltage being
applied to the fan
motor?
(rang 90v-160v
between mid pin and N
NO
YES
Indoor PCB is defective.
Replace the indoor PCB.
YES
Replace the indoor fan
motor
NO