SiUS04-904 Caution for Diagnosis
92 Service Diagnosis
1. Caution for Diagnosis
The operation lamp flashes when any of the following errors are 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
The Single Split Duct-Free System 09/12 Class
The Single Split Duct-Free System 15/18/24 Class