Airwell DLF 18 DCI, Technical Manual

Page: 42 / 102

12-1 @
CONTROL SYSTEM
SM DL
F 1
-A.1 GB
12.4.3 Cooling Mode
12.4.3.1 Cooling Mode – General
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Temp: Selected desired temperature.
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Timer: Any
I-FEEL: ON or OFF
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RCT (R/C sensor) in I-FEEL mode.
c. Indoor Coil Temp is detected by ICT.
12.4.3.2 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 operate in ANY speed regardless the ICT or COMP state.
IFAN speed will be determined according to user selection or
AUTO-FAN logic (see para. 12.4.2.2)
d. RV is OFF during COOL mode.
e. HEATERS are OFF during COOL mode.
f. PUMP operates in cool/dry mode (see protection section 12.6.1.1).
12.4.3.3 Sequence Diagrams
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0
+1
+2
+3
-3
-2
-1
(RT - SPT) [°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
Very Low