Operation And Control; Basic Function; Heating Operation; Cooling Operation - Panasonic WH-MDC06E3E5 Service Manual

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 Mono bloc unit is operating following the frequency instructed by
the microcomputer at Mono bloc 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
Compressor is OFF when Water Outlet Temperature - Internal Water Setting Temperature > 2°C for continuously
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.

12.1.2 Cooling Operation

12.1.2.1 Thermostat control
Compressor is OFF when Water Outlet Temperature - Internal Water Setting Temperature > -1.5°C for
continuously 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.
12.1.3 Cool Mode Operation
3 ways valve control:
o
3 ways valve switch and fix to room side.
Heatpump operate follow normal cooling operation.
o
Backup heater DOES NOT operate during cool mode.
o
Solar 3 way valve operates follow solar operation specification.
o
2 ways valve control:
o
2 ways valve is closed.
38