Panasonic WH-SXH09D0E8, Service Manual

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12. Operation and Control
12.1 Basic Function
Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time
passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating
mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and
performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by
the microcomputer at indoor unit that judging the condition according to internal water setting temperature and water
outlet temperature.
12.1.1 Heating Operation
12.1.1.1 Thermostat control
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Compressor is OFF when Water Outlet Temperature - Internal Water Setting Temperature > 2°C for continuously
3 minutes.
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Compressor is ON after waiting for 3 minutes, if the Water Outlet Temperature - Water Inlet Temperature
(temperature at thermostat OFF is triggered) < -3°C.
12.1.2 Setting Water Outlet Temperature for Heat Mode
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The set temperature define the parameters for the outdoor ambient temperature dependent operation of the unit.
Where by the internal water setting temperature is determined automatically depending on the outdoor
temperature. The colder outdoor temperatures will result in warmer water and vice versa. The user has the
possibility to shift up or down the target water temperature by control panel setting.
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Change in setting water outlet temperature is updated every 30 minutes.