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Operation Guide
MODEL
AT900-03
AT900-04
AT900-06
AT900-08
AT900-10
AT900-13
Troubleshooting
PROBLEM ISSUE
POSSIBLE CAUSE
Water not hot
enough.
7
Low
kW
1
1.6
3
3.8
5.25
4.5
Too much water flowing
through the heater.
Reduction in the ambient
temperature.
Water Pressure below of
0.5 bar (7 psi).
Electrical Malfunction.
Medium
kW
2
2.2
3.5
4.7
5.25
8.5
SOLUTION
Reduce the flow rate of the water via
the outlet tap.
Switch to higher temperature setting.
Check if the main water line stop
valve is fully open and that there
are no other restrictions in the water
supply line.
Have the Heater unit check by a
qualified eIectrician or contact your
local authorized distributor.
High
kW
3
3.8
6.5
8.5
10.5
13
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