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

SiUS04-924_A

1. Troubleshooting with LED

1.1

Indoor Unit

Operation Lamp The operation lamp blinks when any of the following errors is detected.
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.
Service Monitor
The indoor unit has one green LED (LED A) on the control PCB. When the microcomputer works in
order, the LED A blinks.
1.2

Outdoor Unit

The outdoor unit has one green LED (LED A) on the main PCB. When the microcomputer works in
order, the LED A blinks.
66
malfunctions.

Troubleshooting with LED

Operation lamp
(green)
(R9315)
Service Diagnosis