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5-4. Freeze Prevention (Cooling and Dry)
● This function prevents freezing of the indoor heat exchange coil.
● When the compressor has been running for 6 minutes or more and the temperature of the indoor heat exchange
coil falls below 2.4°C, the control circuit stops the compressor for at least 6 minutes. The compressor does not
start again until the temperature rises above 8°C or 6 minutes has elapsed.
T+1 ° C
Set temp. T ° C
Indoor heat exch.
coil temp.
2.4 ° C
Compressor
Indoor fan
5-5. Compressor Overcurrent Protection (Cooling, Dry and Heating)
● This function prevents the compressor from being damaged by overcurrent.
● When the compressor current exceeds either H1(A) for 2 seconds or H2(A) for 8 seconds, both compressor
and outdoor fan stop (Trip). At the same time, operation lamp in front of the indoor unit flashes.
● After 3 minutes, this function automatically releases and resumes operation until tripping repeats 8 times.
If the tripping repeats 9 times or more, the unit stops its operation.
H1 (A)
Compressor
current (A)
H2 (A)
NOTE
The compressor current shown as H1 and H2 in the chart differ by models.
H1
H2
Room temp.
6 minutes
More than
6 minutes
OFF
ON
Set speed
6 sec.
8 sec.
9000 BTU/h
16 A
7 A
More than
6 minutes
ON
ON
2 sec.
Trip
Trip
12000 BTU/h
22 A
10 A
17
Thermo. OFF
Thermo. ON
More than
6 minutes
OFF
ON
Set speed
Trip
7 sec.
1 sec.
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