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Troubleshooting with LED
SiUS071735EB
57
Service Diagnosis
2. Troubleshooting with LED
2.1 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.
With wired remote controller (BRC1E73)
With wireless remote controller (BRC082A43)
In case of wireless remote controller, a receiver is installed. When the error occurs, the operation
lamp on the receiver blinks.
2.2 Outdoor Unit
The outdoor unit has one green LED (LED A) on the PCB. When the microcomputer works in order,
the LED A blinks. (Refer to pages 14, 15 for the location of LED A.)
Operation lamp (green)
(R23942)
The error or warning message also blinks on the basic screen.
(R25009)
Operation lamp
(red)
Summary of Contents for FDMQ09RVJU
Page 12: ...SiUS071735EB 1 List of Functions Part 1 List of Functions 1 Functions 2 ...
Page 14: ...SiUS071735EB 3 Specifications Part 2 Specifications 1 Specifications 4 ...
Page 125: ...SiUS071735EB Check Service Diagnosis 114 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 127: ...SiUS071735EB Check Service Diagnosis 116 15 18 24 class R20704 W V U DC_P1 DC_N1 ...