37
Service Guide
Heating and DHW mode,ambient temperature≤CN07,fan
runs as CN02, ambient temperature≥CN08
，
fan runs as
CN03, CN07
＜
ambient temperature
＜
CN08
，
fan runs
on the speed proportionally between CN03 and CN02.
The EC fan running control (Y1)
On cooling mode, ambient temperature≥CN05
，
fan
runs as CN01, ambient temperature≤CN06
，
fan runs as
CN03, CN06
＜
ambient temperature
＜
CN05,fan runs
on the speed proportionally between CN03 and CN01.
The EC fan input control voltage and speed table
Series No.
Input control Voltage
Speed (rpm)
1
2.8V
451
2
2.9V
490
3
3.0V
520
4
3.1V
551
5
3.2V
605
6
3.3V
654
7
3.4V
684
8
3.5V
706
9
3.6V
754
10
3.7V
780
11
3.8V
817
12
3.9V
838
13
4.0V
870
14
4.1V
892
15
4.2V
921
16
4.3V
938
17
4.4V
963
18
4.5V
985
19
4.6V
1017
