8-27
CONTROL SYSTEM
Revision Y05-01
Service Manual - DNC Series
7.2.2. 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
COMP is forced OFF
For all models except WAX
For WAX model
ON
BLINK
OPER
LED
Notes:
1. IFAN, HE1 and HE2 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.
7.5.
Condensation Pump (DNC model only)
Mode: Cool, Dry, Auto
Temp: Selected desired temperature
Fan: Any