Airwell ONG3-17 R410A, Service Manual

Page: 58 / 127

CONTROL SYSTEM
Service Manual-CN Fixed RPM series
12-23
Note:
1. The ICT is also monitored during Cool and Dry mode, in case the RV control circuit is
faulty. Whenever ICT reaches 70
o
c, which indicates a high pressure in the indoor
coil, the COMP will be forced off automatically. The COMP can be turned on again
only after the ICT is under 70
o
c again and after the 3 min COMP ON delay time.
The OPER LED will not blink in this case.
2. Parameters values:
Parameter Regular
Fix-RPM unit
Water Source Heat
Pump Unit
HPC1
52 38
HPC2
55 42
HPC3
61 45
HPC4
66 48
3. Low Condensing Protection
Mode: (Auto) Cooling or Dry
Temp: Selected desired temp.
Fan: Any
Timer: Any
I Feel: On or Off
Unit: Enabled only in WSHP units type (Disabled for all other unit types).
Control Function
To protect the COMP from Low condensing pressure built-up in the outdoor coil during normal
cooling operation, by switching OFF the COMP.
OCT
Forced OFF
Any (ON/OFF)
8 6
Any
(On/Off/Blink)
Blink