Daikin FTXM-K Series Service Manual page 92

Troubleshooting
Troubleshooting 42/50 class
77
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn on the power again.
Is LED A blinking?
Blink
Check if the outdoor unit is
grounded.
Grounded?
YES
∗ Before you check the LED A,
cancel the standby electricity
saving function by starting fan
operation with the remote
controller.
∗ Wait at least for 7 sec. after
turning on the power.
Continuously ON or OFF
NO
SiBE041434E
Replace the outdoor unit
PCB (main PCB).
Ground the system.
Zero-cross signal
abnormality.
Replace the outdoor unit
PCB (main PCB).
(R21201)
Service Diagnosis