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18
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'11 • SCM-SM-110
(14) Drain motor (DM) control (SRR series only)
(a)
Drain motor (DM) is operated during the cooling or dehumidifying mode operations and simultaneously wity the compres-
sor ON. The DM continues to operate for 5 minutes after the operation stop, anomalous stop, thermostat stop or when it was
switched from the cooling and dehumidifying operations to the fan or heating operation.
Indoor unit operation mode
Stop
(1)
Cooling Dehumidifying Fan
(2)
Heating
Compressor ON Control A
Compressor OFF Control B
Note (1) Inciuding the stop from the cooling, dehumiditying, fan
and heating, and the anomalous stop
(2) Inciuding the “Fan” operation according to the
mismatch of operation modes
1) Control A
a) If the float switch detects any anomalous draining condition, the unit stops with the anomalous stop and the
drain pump starts. After detecting the anomalous condition, the drain motor comtinues to be ON.
b) It keeps operating while the float switch is detecting the anomalous condition.
2) Control B
If the float switch detects any anomalous drain condition, the drain motor is turned ON for 5 minutes, and at 10 sec
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onds after the drain motor OFF it checks the float switch. If it is normal, the unit is stopped under the normal mode
or, if there is any anomalous condition, displayed by the flashing of display lights and the drain motor is turned ON.
(The ON condition is maintained during the drain detection.)
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