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10.2.4 Indoor fan speed out of control diagnosis and solution
10.2.5 Open or short circuit of outdoor temperature sensor or outdoor EEPROM parameter error diagnosis
and solution.
10.2.6 Open or short circuit of room temperature sensor diagnosis and solution.
10.2.7 IPM error diagnosis and solution.
Is all connections on PCB
and between PCB and
compressor good?
Repair or correct the
connector or connection.
Replace the outdoor PCB
and then repower on. Is
the failure cleared?
NO
YES
Check the compressor
NO
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 right?
NO
YES
Indoor PCB is defective.
Replace the indoor PCB.
YES
Replace the indoor fan
motor
NO
