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c o m p r e s s o r
d o o r
b l o w e r f a n
Heating (only applicable to heat pump units)
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Start up the compressor: when the room temperature is less than Ts-1℃, compressor → start-up
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Shut down the compressor: when the room temperature is more than or equal to the set temperature Ts+3℃,
compressor → shutdown
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The electric heating start-up in the heating mode shall meet the following conditions: ① start up the
compressor and indoor blower fan ② none defrost ③ TP1< 49℃ ④Tr ≤20℃.
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The electric heating shutdown in the heating mode shall meet one of the following conditions: ①
shutdown indoor blower fan ② Tr ≥ 23℃ ③ TP1≥50℃.
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In the heating mode, the indoor flower fan can be set as high/ medium/ low /automatic running mode by
remote control however the anti cool air function is prior. In the heating mode, the anti cool air control
function is to control shutdown of the indoor blower fan by detecting the temperature of coil pipe of
evaporator so as to attain the purpose of preventing cold air from blowing.
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For the waste heat emission function in the heating mode, in principle, the indoor blower fan shall be on for
fifteen seconds after the electric heating is closed.
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When the temperature of coil pipe of indoor units is more than or equal to 56℃, the outdoor blower fan
shuts down and it enters the overload protection; when the temperature of coil pipe of indoor units is less
than or equal to 52℃, the outdoor blower fan starts up and it exit the overload protection.
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When the temperature of coil pipe of indoor units rises to 63℃, the compressor and outdoor blower fan are
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