Troubleshooting With Led; Indoor Unit; Outdoor Unit - Daikin FTX20K(2)V1B Service Manual

Troubleshooting with LED

2. Troubleshooting with LED

2.1

Indoor Unit

The operation lamp blinks when any of the following errors is detected.
Operation Lamp
1. When a protection device of the indoor or outdoor unit is activated, or when the thermistor
2. When 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. However, the LED A turns OFF while the standby electricity saving
function is activated and the power supply is OFF. (Refer to page 12, 13 for the location of LED
A.)
45
malfunctions.
Operation lamp
(green)
ON/OFF
(R23077)
SiBE041525F
Service Diagnosis