SiMT041311E
Troubleshooting
Service Diagnosis
172
Troubleshooting
Check No.11
Refer to P.183
NO
Does the
wiring length exceed
specified range?
(R19684)
YES
Blink
Caution
Check the connecting wires
between the indoor unit and the
outdoor unit for colour and
number.
Check the LED A on the outdoor
unit PCB.
Is there any wiring error?
YES
NO
Are the
insulation of the
connecting wires and the
earth properly?
YES
Disturbance?
YES
NO
ON or OFF
NO
NO
Is LED A blinking?
Rotate the outdoor fan by hand.
YES
Check No.11
Check the power supply
waveform.
Locate the cause of the
disturbance of the power
supply waveform, and
correct it.
Replace the indoor unit
PCB (A1P).
Does the outdoor
fan rotate
smoothly?
Replace the outdoor fan
motor and the outdoor unit
PCB.
Replace the outdoor unit
PCB.
Wiring length is to be within
the specified range.
Replace the connecting
wires between the indoor
unit and the outdoor unit.
Correct the connecting
wires between the indoor
unit and the outdoor unit.
∗
Before you check the LED A,
cancel the standby electricity
saving function by starting fan
operation with the remote
controller.
∗
Wait at least for 7 sec. after
turning on the power.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.