12a-22
CONTROL SYSTEM
Revision 0
12Α.9.1. High Pressure Protection
Mode: (Auto) Cooling or Dry
Temp: Selected desired temp.
Fan: Any
Timer: Any
I Feel: On or Off
Function:
To protect the COMP from the high-pressure built-up in the outdoor coil during
normal cooling operation, by changing the IFAN speed and switching OFF COMP.
OCT [
o
c]
Any
OFF
Any
ON
Any
Blink
ON
COMP
OFAN
IFAN
OPER
LED
52
55
61
66
L
COMP is forced OFF
OFAN is forced ON
IFAN forced
to LOW
68
OFAN follow operation of
COMP
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.
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