3-3. No operation (Power is on)
Forecast of cause
Check point 1. Check the indoor and outdoor installation condition
•
Indoor unit:
–
Check incorrect wiring between the indoor unit and remote controller.
–
Check if there is an open cable connection.
•
Are these indoor unit, outdoor unit, and remote controller suitable model names to connect?
-> If there is some abnormal condition, correct it by referring to the installation manual and "DESIGN
& TECHNICAL MANUAL".
Turn off the power and check correct followings.
•
Is there loose or removed communication line of indoor unit and outdoor unit?
Check point 2. Check external cause at indoor and outdoor (Voltage drop or Noise)
•
Instant drop: Check if there is a large load electric apparatus in the same circuit.
•
Momentary power failure: Check if there is a defective contact or leak current in the power sup-
ply circuit.
•
Noise: Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or
electric equipment that may cause harmonic wave)
Check the complete insulation of grounding.
3-3. No operation (Power is on)
Electrical components defective
↓
↓
↓
- (03-65) -
Setting/Connection failure
External cause
3. Troubleshooting without error code