Auto Operation - Toshiba RAS-M10U2MUVG-E Service Manual

Item
1. Basic

1-7. AUTO operation

operation
Remote controller
(continued)
command
• α is corrected according to the outside temperature.
Outside temp.
To ≥ 24˚C
24 > To ≥ 18˚C
To < 18˚C
To Trouble
1) The judgment of selecting COOL/HEAT is carried out as shown below.
When +1.5 exceeds against Tsh 10 minutes and after thermo. -OFF,
heating operation (Thermo. OFF) changes to cooling operation.
Description in the parentheses shows an example of cooling ON/OFF.
When –1.5 lowers against Tsc 10 minutes and after thermo. OFF,
cooling operation (Thermo. OFF) exchanges to heating operation.
2) For the automatic capacity control after judgment of cooling/heating,
see Item 1-5.
3) For temperature correction of room temp. control in automatic heating,
see Item 1-4.
1-8.DRY operation
DRY operation is aimed to dehumidification.
In order to prevent lowering of the room temperature,
• Indoor fan speed is fixed to cooling L tap.
• Cooling capacity is restricted to low. When the room temperature is lower
than the setup temperature, the compressor is turned off.
Operation flow and applicable data, etc.
AUTO • COOL/HEAT operation mode is
automatically selected by Ta, Ts and To for
operation.
• The operation is performed as shown in the
following figure according to Ta value at the
first time only. (In the range of Ts + α – 1 <
Ta < Ts + α + 1, Cooling thermo. OFF (Fan)
/Setup air volume operation continues.)
+1.0
Cooling thermo. OFF (Fan only)
Ta
Ts + α
• Setup air volume
(˚C)
– 1.0
Correction value (α)
No To
Ta
(˚C)
+1.5
Tsc
or
Tsh
Cooling OFF
–1.5
Control outline
Cooling
operation
Heating
operation
0K
–1K
0K
+1K
0K
Cooling
(Cooling ON)
Heating
– 29 –
Description
Ta: Room temp.
Ts: Setup temp.
To: Outside temp.
K = deg
Tsc: Setup temp. in
cooling operation
Tsh: Setup temp. in
heating operation
+ temp. correction
of room temp.
control