MXS Service Manual

SiUS121736EA Troubleshooting with LED
Service Diagnosis 134
2. Troubleshooting with LED
2.1 Indoor Unit
Operation Lamp The operation lamp blinks when any of the following errors is detected.
1. A protection device of the indoor or outdoor unit is activated, or when the thermistor
malfunctions.
2. A signal transmission error occurs between the indoor and outdoor units.
In either case, conduct the diagnostic procedure described in the following pages.
CTXG, FTXR series
FVXS series
CTXS/FTXS series CDXS/FDXS series
Operation lamp
(multi-monitor lamp)
(R24043)
(R23939)
Operation lamp
(green)
(R23940)
Operation lamp
(green)
Operation lamp (green)
(R23941)