Troubleshooting By Led Indications On The Indoor Unit - Daikin FCQ35B7V1 Service Manual

ESIE05-04
1.8

Troubleshooting by LED Indications on the Indoor Unit

Foreword Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal)
w
: LED on /
Microcomputer
Normal Monitor
Notes:
1 When the INSPECTION/TEST button of remote controller is pushed, INSPECTION display blinks
2 In the INSPECTION mode, when the ON/OFF button is pushed and held for 5 seconds or more,
3 Operation halts due to malfunction depending on the model or condition.
4 If LED-B is off, the transmission wiring between indoor and outdoor unit may be incorrect or
5 Troubleshoot by turning off the power supply for a minimum of 5 seconds, turning it back on, and
Part 3 – Troubleshooting
x c
: LED off /
Transmission
Normal Monitor
HAP (LED-A) HBP (LED-B)
c c
c w
x
w
—
x
entering INSPECTION mode.
the aforementioned malfunctioning history display is off. In this case, after the malfunction code
blinks 2 times, the code display turns to "00" (=Normal) and the unit No. turns to "0". The
INSPECTION mode automatically switches to the normal mode (set temperature display).
disconnected. Before performing the previously described troubleshooting, check the transmission
wiring.
then rechecking the LED display.
: LED blinks / — : No connection with troubleshooting
Contents/Processing
Indoor unit normal → Outdoor unit trouble shooting
Incorrect transmission wiring between indoor and out-
door unit
If outdoor unit's LED-A is off, proceed outdoor unit's
trouble shooting. If outdoor unit's LED-A blinks, failure of
wiring or indoor or outdoor unit P.C board ass'y. (Note 4)
Failure of indoor unit PC board ass'y (Note 5)
Malfunction of power supply or failure of PC board ass'y
or broken transmission wire between indoor and outdoor
unit. (Note 5)
Troubleshooting
1
3 3
4
5
3–27