Panasonic U-20ME1E81, Service Manual

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2WAY SYSTEM
Control Functions - Indoor Unit
2 - 6
2
4. Indoor Unit MOV Control
For details, refer to the section 1 "6. Indoor Unit Control from the CCU".
The MOV is at 480 pulses in the following cases.
①
At the time of factory shipment
②
Just after the indoor unit power cord is connected.
5. 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, refer to "5-2. Detailed Settings Function."
⑤
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.
4. Indoor Unit MOV Control
5. Drain Pump Control
SM830204-05_2WAY SYS.indb 6 2015/01/21 17:00:34