26
DC Inverter Multi
VRF Service Manual
CONTROL
1�3 Operation Flow Chart of Outdoor Unit
B
The electronic expansion valve:
initialized
Is abnormality I
ndicator of outdoor
unit is bright?
Is protection device operating?
Is restart being avoided?
(3 minutes)
Air supply or temperature
regulation?
The unit is powered on
Cooling or heating?
Cooling running Heating running
Press the run/stop switch
Abnormality indicator of outdoor
unit: bright
4-way valve: On while heating
Off while cooling and air supply
Outdoor fan: stop
Compressor: stop
Outdoor electronic expansion
valve: stop
Air supply
Temperature regulation
Yes
No
Yes
No
Yes
No
Cooling Heating
Abnormality indicator of outdoor
unit: bright
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