Daikin FTXV25AV1B Service Manual page 59

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