8-7. Overload Prevention (Heating)
This function prevents overheating of the indoor heat exchange coil.
When the temperature of the indoor heat exchange coil rises above T2
C, the outdoor fan stops, if the indoor
fan is L (low speed), then the fan speed changes from L (low speed) to M (medium speed).
When the temperature of the indoor heat exchange coil rises above T1
C, the compressor stops, and indoor fan
runs in LL (very low speed).
Outdoor fan
Compressor
Indoor fan
T1 C
T2
C
Indoor heat
exch. coil
temp.
T3
C
H
OFF
OFF
H
ONON
Set Speed
Set Speed
LL
H
H
M
M
L
M
2 sec.
The operation temperature shown as T1, T2 and T3 in the chart differ by models.
77 / 97 / 127 class
54
50
40
T1
T2
T3
NOTE
51
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