Drain Pump Control - Panasonic S-3650PU3E Technical Data & Service Manual

4-4. Drain Pump Control

The drain pump operates in the following conditions.
① Cooling thermostat ON
② The float switch worked.
③ The drain pump may often operate for a while when the cooling thermostat turns OFF or the indoor
unit is stopped.
④ 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, see the section "7-3. Detailed Settings
Function".
⑤ The indoor unit heat exchanger liquid temperature (E1 or E2) is less than 0˚C.
The drain pump operates for 20 minutes once it starts operating.
4
4-5