AY/AE-A079E
AY/AE-A099E
4. Hot-Keep6. Overheating protection system
This function automatically controls the on-off operationWhen overloading occurs during the heating operation,
of the indoor fan motor in accordance with the on-offthis system controls the outdoor fan motor according to
operation of the compressor during the heatingthe indoor pipe temperature to prevent the overloading
operation, thereby preventing the air conditioner fromof the compressor and restrain the rise in high pressure.
delivering a cold air when the compressor is off.When the indoor pipe temperature exceeds U1uC, the
When the room temperature exceeds the thermostatoutdoor fan motor is turned off, and when the indoor
line OH1�, the compressor is turned off, and the indoorpipe temperature falls U2uC, the outdoor fan motor
fan motor is turned off after rotating at OUL� for 30turns on.
seconds.If 3 minutes elapse after turning off outdoor fan motor,
3 minutes after turning off the compressor, thethe outdoor fan motor is turned on, when the indoor
compressor is turned on for 3 minutes. (belowpipe falls U1uC,
thermostat line H01). While over H01, the compressor
is off.
OFFOFFON
At 10 seconds after turning on the compressor, theU1U1
indoor fan motor is turned on.
ON
The next compressor OFF time is for 3, 8 or more than
8 minutes according to the room temperature (the timeU2U2
increases with a rise of room temperature) when 3
minutes elapse after turning on the compessor.
Within 3 minutesOver 3 minutes
3 min.3 or 8 or 15min.
3 min.(Notes)
(Notes)
ON
Compressor
Figure Y-9
OFF
Table Y-3
ON
ULUL
IndoorFan
fan motor
OFFSpeed
30sec.30sec.
MODELSMLUL
10sec.10sec.Line
Thermo offtime
Notes: Compressor is off when compressor OFF time is 15 minutes.U153uC53uC53uC
AY-A079E
U249uC49uC49uC
Figure Y-7
U153uC54uC54uC
AY-A099E
5. Preheat air flow
U249uC50uC50uC
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 29uC at the
begining of the heat operation or after defrosting, the
indoor fan motor stays.
When the indoor pipe temperature gets higher than
29uC, the fan motor is turned on at speed OUL� after
compensation of starting.
When the indoor pipe temperature exceeds 35uC, the
specified fan speed is restored. When the indoor pipe
temperature falls below 30uC, the fan speed shifts
down to OUL�. And, when the indoor pipe temperature
falls below 24uC, the fan motor turns off. Then, over
29uC , it turns on again at speed OUL�.
35
30
29
24
Pipe temperature(uC)
OFF
ULPresetULOFF UL
Fan speed
Figure Y-8
11 |