Specifications

Troubleshooting by Indication on the Remote Controller Si34-704
226 Troubleshooting
Troubleshooting
Replace the corresponding
fan motor.
Replace fan inverter PCB.
YES
YES
Replace fan motor 2.
NO
NO
NO
The signal
wire short circuits
between Vcc and GND
and between UVW
and GND.
HAP lamp
for the A8P does not
blink on the condition that
HAP lamp for A4P
is blinking.
Replace fan inverter PCB.
YES
No continuity
of fuse (FIU) on the fan
inverter PCB.
Continued from the previous page.
NO
Replace the corresponding
fan motor.
YES
Unable to
rotate the fan manually
with ease when removing
the connector of the
fan motor.
NO
Replace the corresponding
fan motor.
YES
Resistance
value between the power
supply wire terminal of fan motor
and the motor frame (metal) is
1MΩ and below.
NO
Replace the corresponding
fan motor.
YES
The resistance
value between UVW phases
of fan motor is out of balance, or
short circuit between
UVW phases.
Check 1
Check fan motor connector (power supply wire)
Check 2
Check fan motor connector (signal wire)
Put the power supply ON to check the following
LED lamps.
1) HAP lamp on the fan inverter PCB (A4P)
2) HAP lamp on the fan inverter PCB (A8P)
(Referring to the information on page 304)
(Referring to the information on page 304)