2.4 When the outdoor ambient temperature T1ı30ć, the outdoor fan runs at the high
speed. There is a return difference for the change between high and medium speed;
When the outdoor ambient temperature T1İ23ć, the outdoor fan runs at the low
speed. There is a return difference for the change between low and medium speed;
When the outdoor ambient temperature T1İ5ć, the outdoor fan is in a cycle of 1
minute stop and 3 minute run. There is a return difference of 2ć for the change
between low speed and run and stop.
2.5Once the fan operates in a mode, it must operate for more than 45 seconds.
2.6 There is a temperature cut-off protection: when a indoor coil temperature higher than
T_CPS (68ć) and maintains for 10 seconds, the corresponding compressor stops. The
compressor will not restart in 3 minutes until the coil temperature lower than T_CP R(50ć).
The indoor fan is controlled the same as the thermostat is OFF.
2.7 In the case of double-unit cooling, one compressor stops and it changes to the
single-unit operation. The fan is controlled in the single-unit operation mode. It stops 30
after blowing off the remaining heat only if both compressors turn off at the same time.
3.Single unit heating operation:
3.1 When the single unit’s indoor unit gives a heating signal, the corresponding outdoor
compressor carries out cooling operation. During the operation, the outdoor fan and 4-way
valve operate 1 second before the outdoor fan operates.
3.2. When changed from cooling to heating, the compressor stands by for 3 minutes, the
outdoor fan stops.
3.3 When the outdoor ambient temperature T1İ3ć, the outdoor fan runs at the high
speed. There is a return difference of 2ć for the change between high and medium
speed.
When the outdoor ambient temperature T1ı13ć, the outdoor fan runs at the low speed.
There is a return difference of 2ć for the change between low and medium speed.
3.4. Once the fan operates in a mode, it must operate for more than 45 seconds.
3.5. There is a high temperature protection and a temperature cut-off protection.
High temperature protection: When the indoor coil temperature higher than T_OFS (56ć),
the outdoor fan stops; when the coil temperature falls to T_OFR (52ć), the outdoor fan
restarts. The outdoor fan stops for more than 45 seconds.
Domestic Air Conditioner
Model: H2SM-14HC03/R2
H2SM-18HC03/R2
30
21
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