Midea Aqua Tempo Super II Series Technical & Service Manual page 43

Aqua Tempo Super II Series DC Inverter Air-cooled chiller unit (50Hz)
9) Water flow detection malfunction
Water flow detection malfunction
Water pump didn't open or error.
Didn't open the valve in system.
The water flow detection switch
error.
The water flow switch installed out
of criterion, result in mistaking
work.
Selected the capacity of water
pump is less (flow & head).
Designed the water pipe inner
dimension is too less.
Installed the 2-way valve quantity
is more than 50% of indoor unit
quantity.
The filter or water pipe is dirty, the
shell-tube heat exchanger scaled.
Air is in water.
PCB mistakes to alarm.
Inform
center.
Yes
No
No
No
No
No
No
No
No
No
No
the customer service
Open the pump or change;
Yes
inspect the power supply or
control circuit of pump.
Yes
Open the valve.
Replace the water flow
Yes
switch, inspect
connecting wire.
Yes
Adjust the
position.
Yes
Replace water pump.
Yes
Replace water pipe.
Yes
Remove superfluous valve
or forced it is always on.
Clean filter, water pipe,
Yes
shell-tube heat exchanger.
Yes
Empty.
Yes
Replace PCB.
41
MCAC-ATSM-201704
the
installation