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SM830092
(3) Freeze Prevention
Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the
efficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoor
unit’s fan.
11. PROCESSES AND FUNCTIONS
ON ON ON ON
OFFOFF
Set speed
More than
10 minutes
6 minutes
T + 4 °F
Indoor heat exch.
coil temp.
30 °F
Compressor
Indoor fan
Room temp.
Thermo. OFF
Thermo. ON
Set temp. T °F
More than
10 minutes
More than
6 minutes
Set speed
2214_M_S
Fig. 13
Chart Summary and Explanations
When the compressor has been running for 6 minutes or more and the temperature of the
indoor heat exchange coil falls below 30°F, the control circuit stops the compressor for at
least 6 minutes. The compressor does not start again until the temperature rises above
46°F or 6 minutes has elapsed.