8-7. Freeze Prevention
When the evaporation temperature drops to less than the temperatures stated below during Cooling or Dry Operation, the operation of the outdoor unit is automatically stopped to prevent the heat exchanger from freezing up.
(1) Cooling / Dry Cooling Zone: Dry A Zone
< Conditions of freeze prevention operation >
a. Temperature of heat exchanger is less than 36°F (2.4°C)
b. During Cooling or Dry Operation
c. More than 6 minutes pass after start of operation
< Conditions of Reset >
When the conditions of a, b, and c are met
When temperature of heat exchanger rises to 46°F (8°C) or more.
(2) Dry B Zone
< Conditions of freeze prevention operation >
a. Temperature of heat exchanger is less than 36°F (2.4°C)
b. During Dry Operation
< Conditions of Reset >
When both conditions a and b are met
When temperature of heat exchanger rises to 46°F (8°C) or more.
*During freeze prevention operation, the indoor fan stops (Dry B Zone only).
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