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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 When the conditions of a, b, and c are met
c. More than 6 minutes pass after start of operation
< Conditions of Reset >
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
When both conditions a and b are met
< Conditions of Reset >
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).