Heat Mode Operation - Argo Ulisse 10 AUR101CL Technical Data & Service Manual

2 Heat Mode Operation

(RT - SPT) [
+1
0
-1
-2
-3
ON
COMP
OFF
H
M
IFAN
L
OFF
ON
RV
OFF
The Heat Mode operation is similar to the Cool Mode operation. The COMP, OFAN and IFAN are mainly
controlled by the value of (RT – SPT). In the graph above, the IFAN is operating in Auto Fan speed mode.
Therefore, the IFAN speed changes automatically according to the (RT - SPT).
Note 1: The 30s IFAN operation is for purging the heat from the in-coil after COMP has stopped.
Note 2: The IFAN will not be turned on until the in-coil temperature is high enough (as shown in the
graph below) to prevent the unit from supplying cool air.
IFAN Speed
Any
Low
Stop
30
o
c]
30 sec
Note 1
35 40
Note 2
ICT = In-coil Temperature
Any = Hi, Med or Low fan speed which is
selected by the user. In Auto Fan Speed
Mode, the fan speed is selected by the
unit automatically instead.
Low = The indoor fan is forced to operate at low
speed
o
ICT [ c]
11