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8.3.
Operating modes - main function
8.3.1.
Operating range
MODE
AUTO mode
GREEN mode
BOOST mode
E-Heater mode
Fan mode
8.3.2.
Auto mode -
When the unit is ON, the main controller "understands" how to reach the desired temperature in a few hours, through the rational
use of the heat pump and, if necessary, the E-heater will work too.
•
Temperature range 38°C-60°C, default 50°C
•
The unit will work according to upper tank and lower tank water temperature.
•
Compressor control:
- When lower tank water temp. ≤ Tset - 5°C parameter 1) or upper tank water temp. ≤ Tset - 7°C,or lower tank water temp.
≤ 35°C, than compressor starts
- The unit is ON, when upper tank water temp. >Tset, and lower tank water temp>T set or lower tank
water temp > 60°C,compressor stop
•
E-heater on/off for normal use:
- When -5°C < Air temp ≤ 43°C, compressor is on and running continuously for 30 minutes
(parameter 15). If the lower water tank temperature growth is ≤ 2°C (parameter 16) and upper
water tank temp. is ≤ Tset -5°C, e-heater is on. When upper water tank temperatures becomes > T setting, e-heater is off.
- When the unit reach set temperature, compressor and e-heater are off. Compressor running time is reset.
- When there is faulty on upper tank water temp. sensor, the E-heater is forbidden to work.
•
E-heater on/off for special use:
- Under Auto Mode, when working limit environmental protection happened, 5 minutes after compressor is off, and if upper
water tank temp. < T set + 1°C, e-heater is on; If upper water tank
temp ≥ Tset +1°C, e-heater is off; If upper water tank temp ≤ Tset-5°C, e-heater is on.
- After high or low pressure malfunction happened 3 times, the unit locked after 5 minutes. If the
upper water tank temp <Tset+1°C, e-heater is on; If upper water tank temp ≥ Tset+1°C, e-heater is off. If upper water tank temp ≤
Tset-5°C, e-heater is on.
- When there is a faulty on upper tank water temp sensor, the E-heater is forbidden to work.
For running the appliance bellow -5oC, see p.7.3.3. At these conditions, the unit can work with E-heater only!
≤-5 °C
Compressor
OFF
E-heater
ON
Compressor
OFF
E-heater
ON
Compressor
OFF
Acc. to
E-heater
logic
Acc. to
logic
Only the fan will working at low speed,compressor and E-heater are OFF
19
AMBIENT TEMPT
≥-2 °C
>43 °C
≤41 °C
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Acc. to
Acc. to
Acc. to
logic
logic
logic
Acc. to
Acc. to
Acc. to
logic
logic
logic
Lower tank water temp
or Upper tank water
temp
*(when lower tank water
temp sensor has prob-
lem)
>60 °C
≤58 °C
OFF
ON
OFF
ON
OFF
ON
Acc. to
Acc. to
logic
logic
Acc. to
Acc. to
logic
logic
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