25
2) FREEZE PREVENTION (COOLING)
• This function prevents freezing of the indoor heat exchange coil.
• When the compressor has been running for 10 minutes or more and the temperature of the indoor heat
exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes.
INDOOR
HEAT EXCH.
COIL TEMP.
ON
ON
ON
ON
SET SPEED SET SPEED
OFF OFF
AFTER
6 MINUTES
6 MINUTES
MORE THAN
10 MINUTES
INDOOR
FAN
COMPRESSOR
–1
°
C
T +0.5
°
C
T
°
C
ROOM TEMP.
THERMO OFF
THERMO ON
SET
TEMP.
MORE THAN
10 MINUTES
3) OVERLOAD PREVENTION (HEATING)
• This function prevents overheating of the indoor heat exchange coil.
For indoor units SAP-UR228EH only
• When the temperature of the indoor heat exchange coil rises above 59°C, and if the indoor fan is L (low
speed), then the fan speed changes from L (low speed) to M (medium speed).
• When the temperature of the indoor heat exchange coil rises above 61°C, the outdoor fan stops.
INDOOR HEAT
EXCH. COIL
TEMP.
°
C
ON OFF
ON
H o M o L H
➔
H, M
➔
M, L
➔
M
ON
61
59
52
49
OUTDOOR
FAN
INDOOR
FAN
COMPRESSOR
H = High speed
M = Medium speed
L = Low speed
