
Faults and their remedy
10
Faults and their remedy
Remedy of faults on
the regulation and
hydraulics must be carried out by an
authorized company.
Use only original parts for repairs.
fault:
description:
cause:
measure:
The boiler does not
react after switching on
the main switch
The display does not
respond, the other
components do not
working
- boiler is disconnected from electricity
- the fuses on the bottom panel are
switched off
- possible disappearance of the control
phase
- fault of the main switch ON / OFF
- Ensure power supply voltage
- switch on the fuses
- check on the fuses if there are all
three phases at the exit
- Replace the defective part
The boiler does not heat
or does not heat
enough / the heating
pump works
Everything on the
display is in the
recommended limits,
but the boiler does not
deliver hot water
- Lack of 1 or 2 phases
- The power of the boiler is too low
- Fault in one of the relays
- Fault in one of the heaters
- Check if all three phases come into
the boiler
- Check the set power of the boiler.
- Replace the defective part
- Replace the defective part
The boiler heats but it is
very noisy
Increased noise level
during operation
- Air in the system
- Too low water flow
- Possible occurrence of
limescale on the heater
-
Check if the air is discharged
from the system and
discharge it
- Check the valves below the boiler
and open them.
- Clean the filter in front of the boiler
-
Remove heaters and clean them
(this is not considered as a
complaint within the warranty period)
The boiler is quickly
switching off
It reaches the desired
temperature too quickly
and stops working
- Closed valves under the boiler
-
The pump’s fuse has stopped working
- Stuck pump
- Defective pump
- Open the valves
- Replace the defective part
- Start the rotor of the pump
- Replace the defective part
Large oscillations of the
operating pressure
Too fast and too large
changes in the
operating pressure
- One valve is closed
- Pressure in the expansion
container is inadequate
- Defective container
- Open the valve
- Check the pressure in the
expansion container and pump
the container to an adequate
value if it is necessary
- Replace the defective part