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Air Damper Control
Air damper works according to H01,R03 when the unit is turned on manually.
Open or close air damper manually when H01=0:
• Air damper close: 100% return air
• Air damper open: mixed fresh and return air
Open or close air damper automatically when H01=1:
• Indoor humidity
≥
R03: air damper close; Indoor humidity
≤
R03~R04: air damper open.
• Can switch to manual mode from automatic mode and works manually for 30 minutes
amd continue to work automatically.
• Air damper close when the unit is powered off manually.
Defrost Control
Defrost conditions: Indoor temperature
≤
D3, Defrost interval
≥
D1
Defrost mode: compressor cycle off & fan runs at high speed.
Defrost stop conditions:
•
Defrost time
≥
D2;
•
Unit is turned off manually;
•
Unit is turned off faulty.
Alarm
•
Filter Alarm: If the fan's running hour ≥ H02, the filter alarm icon will appear.Reset the
timer, the alarm will disappear.
•
Built-in temp. & humid sensor Error
When H03=1, if there is an open/short circuit of the humidity sensor or abnormal data
(out of the normal temp.&humidity range), only the fan keeps working. The error code is
E01. It will resume operation after the error addressed.
•
RS485-1 Communication Error
When H03=0, if there is RS485-1 communication failure,only the fan keeps working. The
error code is E03. It will resume operation after the error addressed.
