12-23
CONTROL SYSTEM
SM HAFRPM 2-A.1 GB
2. Deicing procedure
OCT [
o
c]
ON
OFF
ON
OFF
ON
L
ANY
COMP
OFAN
RV
IFAN
DST
(DDT)
0
WSHP 15
Others 12
OFF
HEs are forced ON
DOC
ANY
ON
HE
36s
36s
DT
30s
max 12 min.
Note 3
DI (note 1)
DI (note 2)
30s
3 min
3 min
IFAN
OFF
ANY
HE
OFF
ANY
al
l SH
un
its
except WAX
RC
or
W
A
X
unit
s
HEs are forced OFF
IFAN is forced to Low Speed
BLINK
ON
OPER
LED
Notes :
1. In the following Deicing cycles, the time interval between two Deicing cycles
activation is between 30 to 80 min.
2. For RC group, HEs are forced OFF. IFAN operation is as in Heat Mode, Sect
4.0.3.a, i.e. IFAN will be set to OFF when ICT<30
o
c.
For WAX, the IFAN is simply forced OFF.
3. For SH group, HEs are forced ON and IFAN is forced to operate in Low speed,
regardless of the ICT and difference between RAT & SPT.
