Daikin Sky Air R-407C Service Manual page 288

Error Codes: System Malfunctions
1
Troubleshooting 1
3 3
4
5
3–58
To troubleshoot, proceed as follows:
Is HAP flashing?
Check of YES
indoor unit
microcom-
puter
normal
HAP
NO
Is HBP flashing?
YES
Check of
indoor unit
transmission
malfunction
HBP
To outdoor unit
(next page)
NO (ON or OFF)
Turn the power supply off
once and then back on.
Is H1P flashing?
YES
Is H2P on?
NO (OFF)
Does
outdoor unit
NO
microcomputer
normal H1P
flash?
YES
Is
indoor-outdoor
YES
transmission wire
connected
correctly?
NO
Failure of indoor unit PCB or
malfunction of power supply
system.
Resets normally.
Could be outside
cause (noise...).
YES
Failure of indoor unit PCB.
NO
Wire correctly.
Part 3 – Troubleshooting
ESIE02–01