AE-M18 (serv.man2) - Sharp Air Conditioner Service Manual (repair manual). Page 13

13

1-1

COOL operation
In the “COOL” mode, the thermostat circuit is
controlled by four thermostat lines (C1 thru C4).

1-3

HEAT operation
In the “HEAT” mode, the thermostat circuit
is controlled by six thermostat lines (H01 thru
H4).

1-2

DRY operation
In the “DRY” mode, the thermostat circuit is
controlled by three thermostat lines (D1 thru
D3).

The indoor fan motor is controlled in the indoor unit,
and the outdoor fan motor, compressor, and reverse
valve are controlled in the outdoor fan motor.
The operation mode of the outdoor unit is basically
decided by the indoor operation mode.
When the outdoor unit operation mode is heat, and the
indoor unit operation mode is cool or dry, or the outdoor
unit operation is heat, the Busy - LED in the indoor unit
flikers.  When the operation mode of the indoor
unit(called "A1", "A2") changes, the opeartion mode of
the outdoor unit changes in Table Y-1.

18

32

C1

C2

C3

C4

17.5

18.5

19.5

20.5

31.5

32.5

33.5

34.5

Preset temperature (˚C)

Room temperature (˚C)

Room temperature(˚C)

Preset temperature (˚C)

18

32

D1

D2

D3

17.5

18.5

19.5

31.5

32.5

33.5

Preset temperature (˚C)

H4

H3

H2

H1

H02

H01

17

19

21

22

24

26

31

33

35

36

38

40

18

32

Room temperature(˚C)