Panasonic WH-MDF12C6E5 Service Manual

Also see for WH-MDF12C6E5: Design handbook Installation manual Installation manual Operating instructions Operating instructions

Contents

Panasonic WH-MDF12C6E5 Service Manual Manual pdf 40 page image

4012. Operation and Control12.1 Basic FunctionInverter control, which equipped with a microcomputer in determining the most suitable operating mode as timepasses, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operatingmode, the microcomputer maintains the set temperature by measuring the temperature of the environment andperforming temperature shifting. The compressor at mono bloc unit is operating following the frequency instructed bythe microcomputer at indoor unit that judging the condition according to internal water setting temperature and wateroutlet temperature.12.1.1 Internal Water Setting TemperatureOnce the operation starts, remote control setting temperature will be taken as base value for temperature shiftingprocesses. These shifting processes are depending on the Air-to-Water Heatpump settings and the operationenvironment. The final shifted value will be used as internal water setting temperature and it is updated continuouslywhenever the electrical power is supplied to the unit.12.1.2 Heating Operation12.1.2.1 Thermostat control Compressor is OFF when Water Outlet Temperature - Internal Water Setting Temperature > 2°C for continuously3 minutes. Compressor is ON after waiting for 3 minutes, if the Water Outlet Temperature - Water Inlet Temperature(temperature at thermostat OFF is triggered) < -3°C.12.1.3 Tank Mode OperationControl contents: 3 ways valve direction- 3 ways valve switch and fix to tank side. Heat pump Thermostat characteristic- Water set temperature = Tank set temperature or [50°C] whichever lower.- Heat pump Water Outlet set temperature is set to Maximum (53°C) at tank modei. Case 1- THERMO OFF TEMP:1 THERMO OFF TEMP = Water set temperature + [1°C].2 Tank temperature > THERMO OFF TEMP for continuous 10 seconds after heat pump OFF, water pump OFF.- THERMO ON TEMP:1 THERMO ON TEMP = Water set temperature + [-1°C].When detect tank temperature < THERMO ON TEMP, water pump ON for 3 minutes then heat pump ON.ii. Case 2- Heat pump THERMO OFF TEMP:1 Heat pump THERMO OFF TEMP = 53°C + [+4°C].2 Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 3 minutes, heat pump OFF.- Heat pump THERMO ON TEMP:1 Heat pump THERMO ON TEMP = Water inlet during thermo off time + [-3°C].2 Heat pump ON back when water outlet temperature < Heat pump THERMO ON TEMP.iii. Case 3- Heat pump THERMO OFF TEMP:1 Water inlet temperature > 55°C for continuous 60 secs, heat pump OFF.- Heat pump THERMO ON TEMP:1 Heat pump THERMO ON TEMP = Water inlet temperature < 55°C.