Freeze Prevention - Sanyo C2462R Technical Data & Service Manual

11. PROCESSES AND FUNCTIONS

(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.
T + 4 F
Set temp. T F
Indoor heat exch.
coil temp.
30 F
Compressor
Indoor fan
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.
Room temp.
6 minutes
More than
10 minutes
ON OFF
Set speed
Chart Summary and Explanations
More than
10 minutes
ON ON
– 37 –
Thermo. OFF
Thermo. ON
More than
6 minutes
OFF ON
Set speed
2214_M_S
Fig. 13
SM830092