Sanyo SPW-X253G56 - Freeze Prevention; Drain Pump Control

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2
2. Processes and functions
SM830042
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.
Fig. 7
2-3 Drain Pump Control
Drain pump operates when compressor starts to operate or when Float Switch turns off.
COMPRESSOR
OUTDOOR FAN
INDOOR FAN
OFF
OFF OFF
OFF
INDOOR COIL
TEMPERATURE
MORE THAN 10 MINUTES
FREEZE
PREVENTION
6 MINUTES 10 MINUTES
FREEZE
PREVENTION
6 MINUTES
(THERMO OFF)
(THERMO ON)
–1°C
ON
ON
ON
ON
ON
ON
0608_X_S
SET SPEED
Fig. 8
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
SET SPEED
OFF
OFF
OFF
OFF
OFF
OFF
FLOAT SWITCH
ON: low water level
OFF: high water level
COMPRESSOR
DRAIN PUMP
OUTDOOR FAN
INDOOR FAN
20 MINUTES
0609_X_S