2. Outdoor Coil High Pressure Protection
The out-coil high pressure protection prevent the build up of high pressure at the out-coil during cooling
operation.
OCT [
o
c]
ANY
OFF
ANY
ON
ANY
BLINK
ON
COMP
OFAN
IFAN
OPER
LED
52
55
61
64
L
OFAN follow operation of COMP
COMP is forced OFF
OFAN is forced ON (Note 1)
IFAN is forced LOW
Note 1:
In some applications, the outdoor fan and the compressor are controlled together by the COMP
relay output from the controller. In this case, it will take more time for the out-coil to cool down
during the high pressure protection, because the outdoor fan will be turned off with the
compressor instead of working as in the graph above.
15
