Daikin RZQ100B8V3B Service Manual page 182

Troubleshooting
1.8.2 Troubleshooting by LED on outdoor unit PCB
1
3 3
Notes:
4
Remark:
5
3–34
The following diagnosis can be conducted by turning on the power switch and checking the LED
indication on the printed circuit board of the outdoor unit.
w x
: LED on / : LED off /
LED detection
HAP
(Green)
c
w
x
c
1 Turn off the power switch, and turn it on again after 5 seconds or more. Check the error condition,
and diagnose the problem.
2 Turn off the power switch. After 5 seconds or more, disconnect the connection wire (2). Then turn
on the power switch. If the HAP on the outdoor unit PCB flashes after about 10 seconds, the indoor
unit PCB is faulty.
3 Also check for open phase.
The error detection monitor continues to indication the previously generated error until the power
switch is turned off.
Be sure to turn off the power switch after inspection.
c
: LED blinks / — : Not used for diagnosis
H1P
(Red)
x Normal
— Faulty outdoor unit PCB (Note 1)
—
Power supply abnormality, or faulty outdoor unit
PCB (Note 2)
w Activation of protection device (Note 3)
ESIE05-03
Description
Part 3 – Troubleshooting