SiBE121123_A Troubleshooting with LED
Service Diagnosis 136
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
malfunctions.
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.
Wall Mounted Type: FTXG Series Wall Mounted Type: CTXS, FTXS20/25K Series
FTXS35/42/50K Series Wall Mounted Type: FTXS-J, ATXS Series
(The design of the front panel varies depending on
the model.)
Wall Mounted Type: FTX, ATX Series Floor Standing Type: FVXS Series
Operation lamp
(multi-colored)
(R12750)
Operation lamp
(green)
(R17161)
(R18419)
Operation
lamp
(green)
(R12187)
Operation lamp (green)
(R15296)
ON/OFF
Operation lamp
(green)
(R11687)
Operation lamp (green)
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