Airwell DLS 43 DCI, Service Manual

Page: 90 / 182

12-1 =
CONTROL SYSTEM
SM DLSDCI 3-A.1 GB
12.4.4 Heating Mode
12.4.4.1 Heating - General
¡Q{[^%[^W !
Temp: Selected desired temperature
 ¡
|W%{%Q'ºQ%^\W%[^W
Timer: Any
I-FEEL: ON or OFF
^%^%"¡
[^ %
RCT (R/C sensor) in I-FEEL mode.
c. Indoor Coil Temp is detected by ICT.
12.4.4.2 Control Functions
a. COMP Operation
In general – the operation is set by the NLOAD calculation in indoor unit side.
Other rules are according to section 12.5.1 .
b. OFAN Operation
In normal operation OFAN operates together with the COMP.
Other rules are according to section 12.5.3 .
c. IFAN operation:-
IFAN will operates according heat mode rules. See section 12.4.2.3.
d. RV is ON during HEAT mode.
e. HEATERS – See section 12.4.9.
f. PUMP is OFF during heat mode.
12.4.4.3 Sequence Diagram
Maintains room temp. at desired level by comparing RAT or RCT to SPT.
0
+1
+2
+3
-3
-2
-1
(RT - SPT) [
q
C]
COMP
OFAN
IFAN
RV
ON
OFF
ON
OFF
OFF
ON
OFF
User Fan Speed
COMP Speed
decrease
COMP Speed
increase
OFAN Speed
decrease
OFAN Speed
increase
See IFAN Rules