–1.5
T
SC
or T
SH
+1.5
Heating
(Cooling OFF)
(Cooling ON)
Cooling
T
A
˚C
No.
3
4
5
Item
Room temp.
control
(Continued)
Automatic
capacity control
(GA control)
Automatic
cooling/heating
control
Outline of specifications
2) Using the CODE No. 06, the setup temperature in heating
operation can be corrected.
Setting at shipment
1)
Based on the difference between
TA
and
TS
, the
operation
frequency is instructed to the outdoor unit.
2)
Cooling operation
Every 90 seconds,
GA
calculates
TA-TS, the fluctuation,
and the correction amount of compressor frequency
TA
(n) –
TS
(n)
:
Room temp. difference
n
:
Detecting counts
TA
(n-1)
– TS
(n)
:
Room temp.fluctuation
n – 1
:
Detecting counts of 90 seconds before
3) Heating operation
Every 1 minute (60 sec.),
GA
calculates
TA-TS, the
fluctuation, and the correction amount of compressor
frequency.
TS
(n) –
TA
(n)
n
:
Room temp. difference
:
Detecting counts
TA
(n) –
TA
(n – 1):
Room temp.fluctuation
n – 1
:
Detecting counts of 1 minute before
4) Dry operation
The frequency correction control is same as those of the
cooling operation.
However the maximum frequency is limited to approxi-
mately “S6”.
Note)
When LOW is set up, the maximum frequency is
limited to approximately “SB”.
1) The judgment of selecting
Cooling/Heating mode is
carried out as shown belows
When TA exceeds Tsh+1.5°C after 10 minutes at
thermostat off, the operation mode
When
TA is lower Tsc-1.5°C after 10 minutes at thermostat off, the operation mode
changes COOL to HEAT mode.
2)
For the automatic capacity control after judgment of cooling/heating, see Item 4.
3)
For temperature correction of room temp. control
at
automatic heating, see Item 3.
Remarks
Shift of suction
temperature in heating
operation
TSC
:
Setup temp. in
cooling operation
TSH
:
Setup temp. in
heating operation
+ temp. correction of
room temp. control
SET DATA
Setup temp.
correction
0
2
4
6
+0°C
+2°C
+4°C
+6°C
SET DATA
2
Maximum frequency code:
S0-SF (16 steps)
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