Drain Pump Control - Panasonic S-45PU1E5 Technical Data & Service Manual

4-4. Drain Pump Control

The drain pump operates in the following conditions.
Cooling thermostat ON
The fl oat switch worked.
The drain pump may often operate for a while when the cooling thermostat turns OFF or the indoor
unit is stopped.
The drain pump can be turned on when the cooling thermostat is OFF if the setting is made to prevent
water collected in the drain pan for a long time. For details, refer to "7-3. Detailed Settings Function."
The indoor unit heat exchanger liquid temperature (E1) is less than 0˚C when the cooling thermostat
is OFF or the indoor unit is stopped.
The drain pump operates for 20 minutes once it starts operating.
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