Specifications

Indoor Unit (SkyAir Models) SiBE18-821
102 Function
8.3 Function Details
Thermostat
Control
Freeze-up
Protection
Control
The thermostat turns OFF under the following temperature conditions to prevent freezing of the
indoor unit heat exchanger.
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The motorized valve is controlled to maintain the indoor unit heat exchanger temperature
(Te) above 0°C.
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The outdoor unit fan speed is reduced to prevent freeze-up protection control from activating
during cooling operation under low outside air temperature. (For details, see the section on
cooling operation under low outside air temperature.)