Caution for Diagnosis SiENBE04-401A
104 Service Diagnosis
1. Caution for Diagnosis
The operation lamp flashes 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, disabling equipment operation.
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.
Location of
Operation Lamp
Troubleshooting
with LED
Indication
The outdoor unit has one green LED (LEDA) on the PCB. The flashing green LED indicates
normal condition of microcomputer operation.
ON
OFF
(R2950)
Indicator lamps
Operation lamp (green)
HOME LEAVE lamp (red)
ON/OFF button
TIMER lamp (yellow)
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