Troubleshooting With Led; Indoor Unit; Outdoor Unit - Daikin CTX Series Service Manual

Troubleshooting with LED

2. Troubleshooting with LED

2.1

Indoor Unit

Operation Lamp The operation lamp blinks when any of the following errors is detected.
1. A protection device of the indoor or outdoor unit is activated, or the thermistor malfunctions.
2. A signal transmission error occurs between the indoor and outdoor units.
In either case, conduct the diagnostic procedure described in the following pages.
2.2

Outdoor Unit

The outdoor unit has a green LED (LED A) on the PCB.
When the microcomputer works in order, the LED A blinks.
Refer to pages 100, 101 for the location of LED A
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LED INDICATION LIGHTS
FU3
V4 FU1 FU1
E, E2
V3
V5
LEDA
S70 S70
S40 S20 S21 S80
ON/OFF
switch
FU2
FU2
S90 S90
TH1 TH1
S92
S70
S91
DAMA-SM-21-003
X12A
X11A
Service Diagnosis