Freeze Prevention; Outdoor Fan Control - Sanyo SPW-T253G56 Service Manual

2-2 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.
MORE THAN 10 MINUTES
INDOOR COIL
TEMPERATURE
–1 C
COMPRESSOR
OUTDOOR FAN
INDOOR FAN

2-3 Outdoor Fan Control

• In low outdoor temperature, the outdoor fan is set automatically from HIGH to LOW to
prevent the indoor heat exchanger from freezing.
• When the outdoor temperature falls below 25.5 C, the outdoor fan is set from HIGH to
LOW automatically. When the outdoor temperature rises to 27.5 C, the outdoor fan is
set from LOW to HIGH automatically.
FREEZE
PREVENTION
6 MINUTES
ON OFF
ON OFF
– 31 –
2. Processes and functions
FREEZE
PREVENTION
10 MINUTES 6 MINUTES
(THERMO OFF)
ON OFF
ON
OFF
SET SPEED
(THERMO ON)
ON
ON
0608_X_S
Fig. 7
Fig. 8
SM830043
2