SiK011003
51
Troubleshooting
Troubleshooting
(5) Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor
Malfunction
Name
Indicator Display (during
blinking, ON 0.5s and OFF 0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
Zero-crossing
inspection circuit
malfunction of the
IDU fan motor
OFF 3S
and blink
17 times
Start
Turn power off
for 1minute,the
turn back on
Operation
Indicator is still
OFF 3S and blinking
17 times
The unit returns to normal.
Conclusion:Operation Indicator is OFF 3S
and blink 17 times due to power off / on
while the capacitor discharges slowly.
The zero-cross detection
circuit of the mainboard is
defined abnormal.Replace
the mainboard with the same
model
End
