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9. Heating Operation - 4th Stage
1) Operation
: This stage is decided as Small Load during operation stage of the previous E. Load, 60% compressor operation is mostly
used in this stage.
2) Condition to shift next operation stage
: It shifts into the assigned stage from the current stage when the following condition happens.
a. [Restart Time of 40% Compressor] should be checked when the Room Temperature is maintained under
[Desired Temp. – 3.0] for 3-minutes after operating compressor.
If the Restart Time pass, 40% compressor would be started.
If the Time doesn't pass, the current condition should be maintained until it reaches at the Time and 40% compressor-
would be restarted after passing this Time.
In the above
and , 40% compressor operation would be suspended when the room temperature reaches at
[Desired Temp.] after starting 40% compressor.
The Heating Operation-3rd Stage would be operated when the operations such as the above
and
are performed 2
times inconsecutively.
b. The Heating Operation-3rd Stage would be operated when the room temperature is under [ Desired Temp. -1°…] more
than 10-minutes after compressor operation.
c. The Heating Operation-3rd Stage would be operated when the current operation is performed more than 1 hour.
d. The Heating Operation-1st Stage would be operated when the temperature falls under -3°… one time during 3-mins after
compressor OFF.
3) Operation Diagram
MAX.
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
MAX.
ON
OFF
OFF
OFF
OFF
MAX.
ON
OFF
OFF
60%
Controlled at the Indoor Unit
Indoor Fan
40%
OFF
Outdoor Fan
OFF
Desired Temp. +0.5
°
C
Desired Temp.
Room Temp.
Comp.
Desired Temp. – 0.5
°
C
