17
Problems
Tronic 2000T – 6 720 885 113 (2021/08)
9Problems
9.1 Problem/Cause/Solution
In the following diagram there are some solutions described for
possible problems / troubleshooting (these should only be
performed by authorized technicians).
DANGER:
Assembly, maintenance and repairs should
only be carried out by authorized
technicians.
Problem Reason Remedy
Domestic Cold Water
Very hot water
Insufficient capacity
Continuous drain from the
pressure relief valve
Rust-colored water
Water with a bad odour
Noises in the DHW cylinder
X Overvoltage or the safety switch was triggered
(performance too high).
▶ Check whether the cable of the device is
designed to supply the required power.
X X Incorrect temperature set by the temperature
regulator.
▶ Adjust the temperature regulator.
X High limit safety cut-out triggered. ▶ Confirm that the thermostat is correctly
inserted into the phial pocket.
▶ Reset the thermostat (section 8.3).
▶ Assess maintenance needs (for example,
descaling the electrical heater, removal of
dirt).
X Defective heating element. ▶ Exchange the heating element.
X Incorrect operation of the temperature limiter. ▶ Replace the temperature limiter or install a
new one.
X X X X Scale on the DHW cylinder and/or the safety
group.
▶ Remove scale.
▶ Assess the need for more frequent
maintenance or water treatment if caused
by elevated water hardness.
▶ If necessary replace the safety group.
X X X Water pressure in the system. ▶ Check the system water pressure.
▶ If necessary, install a pressure reducer
(Fig. 9).
▶ Confirm the need for an expansion vessel
(pre-load 0.5 bar below Pmax).
X X Capacity of the water supply network. ▶ Check piping.
Table 5
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