based on the value of the coil temperature it has received. If the conditions for high load
protection are met, the outdoor fan stops immediately. It will restart 45 seconds later if the
signal for the outdoor heat load disappears. Otherwise, the outdoor fan will continue to stop
until the signal for the outdoor heat load disappears. The signal for heat load is as follows:
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.
High temperature cut-off protection: When the coil temperature higher than T_CPS (68ć) and
maintains for 10 seconds, both the compressor and outdoor fan stop, and the indoor fan
operates as the thermostat is Off. The compressor will not restart in 3 minutes until the coil
temperature lower than T_CP R(50ć).
6.2 In the single-unit heating operation, the current in the compressor is larger than 4.0 A(for
Model 14)(4.8A for Model 18), and the outdoor fan stops. 45 seconds later, the current in the
compressor is less than 3.5A(for Model 14)(4.3A for Model 18), and the outdoor fan operates
in normal condition(the compressor does not detect current within 30 seconds after its start),
the current in the compressor is larger than 3.5A(for Model 14)(4.3A for Model 18) and less
than 4.0A(for Model 14)(4.8A for Model 18), and the outdoor fan does not restore.
7.Double-unit heating operation with heat load
7.1 In the double-unit heating operation, the indoor unit gives out the value of the coil
temperature, and the outdoor unit judges whether to start in the high load protection operation
based on the value of the temperature it has received. If the conditions for high load protection
are met, the outdoor fan stops immediately. It will restart 45 seconds later if the signal for the
outdoor heat load disappears. Otherwise, the outdoor fan will continue to stop until the signal
for the outdoor heat load disappears. The signal for heat load is as follows:
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.
High temperature cut-off protection: When the coil temperature higher than T_CPS (68ć)
and maintains for 10 seconds, both the compressor and outdoor fan stop, and the indoor
fan operates as the thermostat is Off. The compressor will not restart in 3 minutes until the
Domestic Air Conditioner
Model: H2SM-14HC03/R2
H2SM-18HC03/R2
23
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