Funtions - Sharp AU-MP14 Service Manual

CHAPTER 3. FUNCTIONS
[1] FUNCTION
TEMPERATURE CONTROL
CHARACTERISTIC
1.1. COOL operation
In the "COOL" mode, the thermostat circuit is controlled by five
thermostat lines (C1 thru C5).
Preset temperature (C )
1.2. DRY
In the "DRY" mode, the thermostat circuit is controlled by three
thermostat lines (D1 thru D3).
Preset temperature (C )
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.
Preset temperature (C )
18 32
°
18 32
°
18 32
°
2.2. DRY
On the switch on, the compressor always starts to operate for 2
minutes 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
The preset temperature ranges from 18 C to 32 C. When the room
temperature is below 18 C, the preset temperature is set to 18 C,
and when the room temperature is over 32 C, the preset
°
temperature 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.
Cooling zone (1) & (5)
Dehumidifying zone (2) & (4)
Circulating zone (3)
FAN SPEED
Fan speeds are given by the indoor fan motor, "DL"~"CH" which
are available in the following operation mode.
NOTE: Fan speed may be changed, without warning.
Fan Fan switch
speed
DL —
DH —
CL COOL LOW
CAL —
CM COOL MID
CAH —
CH COOL HIGH
FREEZE PREVENTIVE
When the indoor pipe temperature falls below 3 C cool or dry
operation for 3 minutes or more, the compressor is turned off.
When the indoor pipe temperature rises above 7 C in cool or dry
operation for 3 minutes or more, the compressor is turned on.
10
t ti ll
° °
°
°
18 32
°
Preset temperature (C )
Compressor Fan speed
ON "DH"
ON "DL"
OFF "DL" or OFF
Fan switch
AH-129 / AH-MP14
(AUTO)
(r.p.m)
800
DRY
890
— 800
840
COOL
980
1020
— 1170
°
°
°