Panasonic WH-SDF07C3E5 Service Manual page 62

ii. Case 2
- Heat pump THERMO OFF TEMP:
1. Heat pump THERMO OFF TEMP = 55°C + [+2°C].
2. Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 3 minutes, heat pump OFF but water
pump ON.
- 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 > X_INLETDT_1°C for continuous X_INLETDT_2 sec, heat pump OFF and water pump OFF.
- Heat pump THERMO ON TEMP:
1. Heat pump THERMO ON TEMP = Water inlet during thermo off time + [-3°C].
2. Water pump ON back when tank temp. < tank temp. when heatpump thermo off + [-3°C].
3. Heat pump only ON back after water outlet temperature < Heat pump THERMO ON TEMP & water pump ON for 3 minutes.
• Booster heater control
- Booster heater turn On and Off follow normal operation.
- Booster heater turn ON condition:-
1. During startup time (initialization), Booster heater turn ON after DELAY TIMER.
2. When tank temperature lower than HEATER ON TEMP.
3. [X_THEATTM_2] minutes from previous heater off.
- Booster heater turn OFF condition:-
1. When tank temperature higher than tank set temperature for continous 15 sec.
• Solar 3 way valve
- Solar pump operates follow solar operation specification.
• Others
- Indoor backup heater cannot be ON during tank mode only.
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