Aqua Tempo Super II
201709 17
2 Stop Operation
The stop operation occurs for one of the following reasons:
1. Abnormal shutdown: in order to protect the compressors, if an abnormal state occurs the system makes a 'stop with
thermo off’ operation and an error code is displayed on the outdoor unit’s PCB digital displays and on the user
interface.
2. The system stops when the set temperature has been reached.
3 Standby Control
3.1 Crankcase Heater Control
The crankcase heater is used to prevent refrigerant from mixing with compressor oil when the compressors are stopped.
The crankcase heater is controlled according to the outdoor ambient temperature and discharge temperature. When the
outdoor ambient temperature is above 40°C, the crankcase heater is off; when the outdoor ambient temperature is below
35°C, the crankcase heater is controlled according to discharge temperature. Refer to Figures 3-3.1 and 3-3.2.
Figure 3-3.1: Crankcase heater controlled according to outdoor ambient temperature
Figure 3-3.2: Crankcase heater controlled according to discharge temperature
Notes:
1. Tp1: discharge temperature sensor 1, Tp2: discharge temperature sensor 2.
3.2 Water Pump Control
When the outdoor unit is in standby, the circulator pumps run continuously。
Ambient temperature < 35
o
C
Ambient temperature > 40
o
C
Crankcase heater is controlled according to discharge temperature
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