Service Manual

SiUS091133 Troubleshooting
Service Diagnosis 114
Troubleshooting 24/30/36 class
(R16911)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
YES
NO
NO
YES
Turn on the power again.
Check to see if the unit is
grounded.
Replace the outdoor unit
PCB.
Ground the system.
The cause can be external
factors other than
malfunction.
Investigate the cause of
noise.
Error again?
Grounded?
∗ 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.