AY-A244 - Sharp Air Conditioner Specification (repair manual). Page 13

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13
AY-A184E
AY-A244E
AE-A184E
AE-A244E
4. Hot-Keep
This function automatically controls the on-off operation
of the indoor fan motor in accordance with the on-off
operation of the compressor during the heating operation,
thereby preventing the air conditioner from delivering a
cold air when the compressor is off.
When the room temperature exceeds the thermostat line
“H1”, the compressor is turned off, and the indoor fan
motor is turned off after rotating at “D” for 30 seconds.
3 minutes after turning off the compressor, the compressor
is turned on for 3 minutes. (below thermostat line H01).
While over H01, the compressor is off.
At 10 seconds after turning on the compressor, the indoor
fan motor is turned  on.
The next compressor OFF time is for 3, 8 or 15 minutes
according to the room temperature (the time increases
with a rise of room temperature) when 3 minutes elapse
after turning on the compessor (the compressor is off
when compressor OFF time is 15 minutes).
Figure Y-7
5. Preheat air flow
This function is intended to prevent cold air from being
discharged when the heating operation starts or when
defrosting.
When the indoor pipe temperature is below 29˚C at the
beginning of the heat operation or after defrosting, the
indoor fan motor stays.
When the indoor pipe temperature gets higher than 29˚C,
the fan motor is turned on at speed “D” after compensation
of starting.
When the indoor pipe temperature exceeds 35˚C, the
specified fan speed is restored. When the indoor pipe
temperature falls below 30˚C, the fan speed shifts down
to “D”. And, when the indoor pipe temperature falls below
24˚C, the fan motor turns off. Then, over 29˚C , it turns on
again at speed “D”.
Figure Y-8
6. Overheating protection system
When overloading occurs during the heating operation,
this system controls the outdoor fan motor according to
the indoor pipe temperature to prevent the overloading of
the compressor and restrain the rise in high pressure.
When the indoor pipe temperature exceeds U1˚C, the
outdoor fan motor is turned off, and when the indoor pipe
temperature falls U2˚C, the outdoor fan motor turns on.
If 3 minutes elapse after turning off outdoor fan motor, the
outdoor fan motor is turned on, when the indoor pipe falls
U1˚C.
Pipe temperature (
˚C)
24
29
30
35
OFF
D
D
D
OFF
Preset
Fan speed
Compressor
ON
OFF
Indoor
fan motor
30sec.
time
D
ON
OFF
3 min.
(Notes)
3 min.
10sec.
D
30sec.
10sec.
3 / 8 / 15min.
(Notes)
Notes: Compressor is off when compressor OFF time is 15 minutes.
U1
OFF
ON
OFF
ON
U2
U1
U2
In the case of turn off 
time is within 3 minutes
In the case of turn off 
time is over 3 minutes
Figure Y-9
Table Y-3
MODELS
AY-A244E
AY-A184E
M
L
UL
U1
U2
U1
U2
54˚C
Fan 
Speed
Line
52˚C
54˚C
52˚C
53˚C
51˚C
53˚C
51˚C
52˚C
50˚C
52˚C
50˚C
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