Chapter 3. Functions; Function - Sharp AY-AP7FHR Service Manual

AYAP7FHR
CHAPTER 3.
FUNCTIONS

[1] FUNCTION

1. TEMPERATURE CONTROL CHARACTERISTIC
1.1. COOL operation
In the "COOL" mode, the thermostat circuit is controlled by four ther-
mostat lines (C1 thru C5).
34.5
33.5
33.0
32.5
31.5
20.5
19.5
19.0
18.5
17.5
18
Preset temperature (°C)
1.2. DRY operation
In the "DRY" mode, the thermostat circuit is controlled by three ther-
mostat lines (D1 thru D3).
33.5
32.5
31.5
19.5
18.5
17.5
18
Preset temperature (°C)
1.3. HEAT operation
In the "HEAT" mode, the thermostat circuit is controlled by six thermo-
stat lines (H01 thru H4).
37.0
36.0
35.0
34.0
32.5
31.5
23
22
21
20
18.5
17.5
18
Preset temperature (°C)
Service Manual
2. OPERATION MODES
2.1. COOL operation
The compressor turns on or off, at the thermostat lines C3 and C4. The
outdoor fan motor is also controlled with the compressor.
C1
C2
C3
C4
C5
32
2.2. DRY operation
On the switch on, the compressor always starts to operate for 2 min-
utes with fan speed "DL".
The microcomputer reads the room temperature 2 minutes after this
first compressor operation.
This room temperature is set as the preset temperature automati-
D1
cally.The preset temperature ranges from 18digC to 32°C. When the
D2
room temperature is below 18°C, the preset temperature is set to
D3
18°C, and when the room temperature is over 32°C, the preset tem-
perature is set to 32°C.
Dry operation is divided into three zones (Cooling zone, Dehumidifying
zone and Circulating zone) by thermostat lines (D1 to D3), and the
compressor and the fan motor are controlled in each zone as shown in
Table.
32
H01
H02
H1
H2
H3
H4
Cooling zone
Dehumidifying zone
Circulating zone
32
3 – 1
States 1 & 3 : Compressor ON
State 2 : Compressor OFF
C4
C5
3
1
Room
temperature
transition
2
Preset temperature
States 1 & 5 : Cooling zone
States 2 & 4 : Dehumidifying zone
States 3 : Circulating zone
D1
D2
5
D3
1
4
2
Room
temperature
transition
3
Preset temperature
Compressor Fan speed
ON DH
ON DL
OFF DL or OFF
AYAP7FHR