Panasonic WH-ADC0309H3E Service Manual

Contents

Panasonic WH-ADC0309H3E Service Manual Manual pdf 93 page image

9312. 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 outdoor 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, control panel setting temperature will be taken as base value for temperature shiftingprocesses. These shifting processes are depending on the Air-to-Water Heat pump 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 OperationThermostat Control12.1.2.1 Compressor is OFF when Water Outlet Temperature – Internal Water Setting Temperature > 2°C forcontinuously 3 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.Thermostat Control (Outdoor Ambient Temperature)12.1.2.2Stops provide heating to room side during high outdoor ambient condition.Control content: Heating operation and water pump will turn OFF when outdoor ambient temperature > outdoor thermo offtemperature + 3°C.(Outdoor thermo off set temperature is set by control panel. Thermo off set temperature is between 5°C ~ 35°C) Heating operation will resume when Outdoor ambient temperature < Outdoor thermo OFF set temperature + 1°C.Heat Mode Operation12.1.2.3Operation of heat pump provide heating capacity to room side by hot water through heating panel, floor heating orfan coil unit.1 3 ways valve control:o 3 ways valve switch and fix to heating side.2 Heat pump operates follow normal heating operation.3 Back up heater operate follow normal operation.4 2 ways valve control:o 2 ways valve opens.12.1.3 Cooling OperationThermostat control12.1.3.1 Compressor is OFF when Water Outlet Temperature – Internal Water Setting Temperature > -1.5°C forcontinuously 3 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.Cool Mode Operation12.1.3.21 3 ways valve control:o 3 ways valve switch and fix to cooling side.2 Heat pump operates follow normal cooling operation.3 Room heater DOES NOT operate during cool mode.4 2 ways valve control:o 2 ways valve is closed.