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2. PROCESSES AND FUNCTIONS
COOLING SELECTION TEMP.
+2.5 deg
SHIFT SET TEMP.
REMOTE CONTROLLED
SET TEMP.
SHIFT SET TEMP.
HEATING SELECTION TEMP.
This chart shows how the Operation Mode (COOLING or HEATING) is determined by the
microprocessor taking the room temperature into consideration. It also shows the
temperature points at which the cooling or heating mode is switched, when the AUTO mode
is selected.
After operation starts, the set temperature shifts automatically by +2 deg. at cooling and by -
2 deg. at heating. For example, if cooling is selected, the set temperature changes from
20° C to 22° C.
(The display of the remote controller remains 20° C.)
The change of the operation mode (heating to cooling, cooling to heating) by the change of
the room temperature during the operation is as follows.
Heating to Cooling; Room temp. ≥ Shifted temp + 0.5 deg.
Cooling to Heating; Room temp. ≤ Shifted temp -1.0deg.
For example, if the room temperature rises above 22.5 °C (=22+0.5) during the cooling
operation at the room temperature 20° C set by the remote controller, the operation
changes to cooling. When the room temperature lowers below 17° C (=18-1.0) thereafter,
the operation changes to heating again.
In heating operation, using the body sensor, room temperature control is designed so that
room air temp. is sensed as 4 deg. lower than suctioned air at indoor unit taking into
account of the temperature gap between upper part and lower part of the room.
Within 10 minutes after the compressor turns OFF, the operation does not change to
cooling (heating), even when the room temperature changes from C to A (A to C).
When switching from cooling (heating) to heating (cooling), the actuation of the 4 way valve
will delay about 30-50 seconds after the compressor turns ON.
A
+2 deg
B
–2 deg
–3 deg
C
HEATING
Chart summary and Explanations
COOLING
38
–
–
HEATING
0440_M_S
Fig. 12
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