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SUPER DIGITAL
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No.<br />
Item<br />
Outline of specifications<br />
Remarks<br />
3<br />
Room temp.<br />
control<br />
(Continued)<br />
2) Using the Item code 06, the setup temperature in heating<br />
operation can be corrected.<br />
Setup data<br />
0 2 4 6<br />
Shift of suction<br />
temperature in heating<br />
operation<br />
Setup temp. correction<br />
+0°C +2°C +4°C +6°C<br />
Setting at shipment<br />
Setup data 2<br />
4<br />
Automatic<br />
capacity control<br />
(GA control)<br />
1) Based on the difference between Ta and Ts, the operation<br />
frequency is instructed to the outdoor unit.<br />
2) Cooling operation<br />
Every 90 seconds, the room temperature difference<br />
between temperature detected by Ta and Ts and the<br />
varied room temperature value are calculated to obtain<br />
the correction value of the frequency command and then<br />
the present frequency command is corrected.<br />
Ta (n) – Ts (n) : Room temp. difference<br />
n<br />
: Counts of detection<br />
Ta (n-1) – Ts (n) : Varied room temp. value<br />
n – 1<br />
: Counts of detection of 90 seconds before<br />
3) Heating operation<br />
Every 1 minute (60 sec.), the room temperature difference<br />
between temperature detected by Ta and Ts and the<br />
varied room temperature value are calculated to obtain<br />
the correction value of the frequency command and then<br />
the present frequency command is corrected.<br />
Ts (n) – Ta (n) : Room temp. difference<br />
n<br />
: Counts of detection<br />
Ta (n) – Ta (n – 1): Varied room temp. value<br />
n – 1<br />
: Counts of detection of 1 minute before<br />
4) Dry operation<br />
The frequency correction control is same as those of the<br />
cooling operation.<br />
However the maximum frequency is limited to approximately<br />
“S6”.<br />
Note) When LOW is set up, the maximum frequency is<br />
limited to approximately “SB”.<br />
5<br />
Automatic<br />
cooling/heating<br />
control<br />
1) The judgment of selecting COOL/HEAT is carried out as<br />
shown below. When +1.5 exceeds against Tsh 10 minutes<br />
and after thermo.-OFF, heating operation (Thermo. OFF)<br />
exchanges to cooling operation. Description in the<br />
parentheses shows an example of cooling ON/OFF.<br />
Ta<br />
(˚C)<br />
+1.5<br />
Cooling<br />
Tsc: Setup temp. in<br />
cooling operation<br />
Tsh: Setup temp. in<br />
heating operation<br />
+ temp. correction of<br />
room temp. control<br />
or<br />
Tsc<br />
Tsh<br />
-1.5<br />
(Cooling OFF)<br />
Heating<br />
(Cooling ON)<br />
When –1.5 lowers against Tsc 10 minutes and after<br />
thermo. OFF, cooling operation (Thermo. OFF) exchanges<br />
to heating operation.<br />
2) For the automatic capacity control after judgment of<br />
cooling/heating, see Item 4.<br />
3) For temperature correction of room temp. control in<br />
automatic heating, see Item 3.<br />
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