12a-25
CONTROL SYSTEM
Revision 0
12Α.9.3. High pressure protection (excluding RH Group)
Mode: (Auto) Heating
Fan: Any
Timer: Any
I Feel: On or Off
Control Function
Protect the Compressor from high pressure by switching OFF the OFAN and COMP.
ICT [
o
c]
Any
Off
Any
Off
COMP
OFAN
52
55
61
66
COMP is forced OFF
67
OFAN is force
Off
ON
BLINK
OPER
LED
Notes:
1. IFAN, HE1 will be activated according to the relevant Heating Mode Sect.
2. In case of any malfunction in the relay control circuit, the OCT is also monitored during
Heating mode. Whenever OCT reaches 70
o
c, which indicates a high pressure in the
outdoor coil, the COMP will be forced off automatically. The COMP can be turned on
again only after the 3 min COMP ON delay and the OCT is under 70
o
c. The OPER LED
will not blink in this case.
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