AY-A189E
AY-A249E
4. Hot-Keep
35
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
30
operation, thereby preventing the air conditioner from
29
delivering a cold air when the compressor is off.
When the room temperature exceeds the thermostat
24
line OH1�, the compressor is turned off, and the indoor
fan motor is turned off after rotating at OD� for 30Pipe temperature (uC)
seconds.OFF
DPresetDOFF D
3 minutes after turning off the compressor, the
Fan speed
compressor is turned on for 3 minutes. (below
Figure Y-8
thermostat line H01). While over H01, the compressor
is off.6. Overheating protection system
At 10 seconds after turning on the compressor, theWhen overloading occurs during the heating operation,
indoor fan motor is turned on.this system controls the outdoor fan motor according to
The next compressor OFF time is for 3, 8 or 15 minutesthe indoor pipe temperature to prevent the overloading
according to the room temperature (the time increasesof the compressor and restrain the rise in high pressure.
with a rise of room temperature) when 3 minutesWhen the indoor pipe temperature exceeds U1uC, the
elapse after turning on the compessor (the compressoroutdoor fan motor is turned off, and when the indoor
is off when compressor OFF time is 15 minutes).pipe temperature falls U2uC, the outdoor fan motor
turns on.
3 min. 3 / 8 / 15min.If 3 minutes elapse after turning off outdoor fan motor,
3 min.(Notes)(Notes)
the outdoor fan motor is turned on, when the indoor pipe
ON
Compressorfalls U1uC.
OFF
OFFOFFON
ONU1U1
DD
Indoor
fan motorON
OFF
30sec.30sec.
U2U2
10sec.10sec.
time
Notes: Compressor is off when compressor OFF time is 15 minutes.
In the case of turn offIn the case of turn off
time is within 3 minutestime is over 3 minutes
Figure Y-7
Figure Y-9
5. Preheat air flow
This function is intended to prevent cold air from beingTable Y-3
discharged when the heating operation starts or when
Fan
defrosting.Speed
MODELSMLUL
When the indoor pipe temperature is below 29uC at the
Line
beginning of the heat operation or after defrosting, the
indoor fan motor stays.
U154uC53uC52uC
When the indoor pipe temperature gets higher thanAY-A189E
U252uC51uC50uC
29uC, the fan motor is turned on at speed OD� after
compensation of starting.U154uC53uC52uC
AY-A249E
When the indoor pipe temperature exceeds 35uC, theU252uC51uC50uC
specified fan speed is restored. When the indoor pipe
temperature falls below 30uC, the fan speed shifts down
to OD�. And, when the indoor pipe temperature falls
below 24uC, the fan motor turns off. Then, over 29uC ,
it turns on again at speed OD�.
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