8-11
CONTROL SYSTEM
Revision Y05-01Service Manual - DNC Series
4. Heating Mode
4.0. Heating Mode - General
4.0.1 In heating Mode, temp. compensation schedule will be activated for
wall mounted and ducted models (i.e. FCD/RWK, ELD, ECC, WAX,
WMF and WMN/WHX) according to the following table:
Add to SPT SPT [
o
c]
I-FEEL ON I-FEEL OFF
18 ≤ SPT ≤ 27
0 °c +2 °c
27 < SPT ≤ 30
0 °c +3 °c
4.0.3 IF operating rules
(a) 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 40
o
c for EMD/ELD, 20
o
c for WAX), or
• at the IFTC second
(4)
after the COMP is switched ON.
In this case, the IFAN will be started at low speed
(5)
.
The default IFTC values are
0 sec for EMD/ELD models
15 sec for
WMN4/RWK(FCX) models
600 sec for WVL (including
IFC) models
30 sec for all other models
IFAN Speed
Any
Low
Stop
30 35 40
EMD/ELD
EMD/ELD
ICT [
o
c]
15 20 25
General :
For WAX :
Notes :
1) In EMD/ELD models, the IFAN will start if ICT ≥ 40
o
c at
any IFAN speed, and will stop if ICT < 30
o
c.
2) 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.
3) An exception to this rule (4.0.3.a) is the Back-up mode
for SH group. (Cf.: Sect 4.0.4.e)
4) If the IFAN is turned ON by the IFTC operation, its
minimum operation time before stopping due to low ICT
temperature is 60 sec.
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