12-10
CONTROL SYSTEM
Revision Y05-01
Service Manual - ALPHA
12.6 Heating Mode
12.6.1
Heating Mode - General
•
In heating Mode, temp. compensation schedule will be activated for wall mounted
units.
SPT [
o
c]
Add to SPT
I-FEEL ON
I-FEEL OFF
18
≤
SPT
≤
27
0
o
c
+2
o
c
27 < SPT
≤
30
0
o
c
+3
o
c
Notes
:
•
No compensation will be activated in Forced operation modes
12.6.2
IF operating rules
•
As a general rule for
RC and SH groups
, when
COMP is ON
, excluding
protection modes, IFAN will be switched ON if
•
ICT > 35
o
c or
at the IFTC 30 sec after the COMP is switched ON. In
this case, the IFAN will be started at low speed.
Notes :
1) In
SH or RC group
, if HE is set to OFF due to low ICT, IFAN will be
switched to LOW and will be turned OFF after 30 sec.
2) An exception to this rule (4.0.3.a) is the Back-up mode for SH.
•
In
RC and SH groups
, whenever
COMP & HE are both
OFF
, excluding protection modes, IFAN operation will be according
to the following:
In
other models
IFAN will operate in low speed for 30 sec and then stop. If
COMP is OFF for more than 3 minutes and IFEEL Mode is inactive, IFAN will
operate in low speed according to the following graph:
IFAN Speed
Any
Low
Stop
30
35
40
EMD/ELD
EMD/ELD
ICT [
o
c]
15
20
25
General :
For WAX :
SPT+4
SPT+6
ICT [
o
c]
ON
OFF
IFAN (Low Speed)
