DE DIETRICH VIVADENS MCR 24_28 BIC User Manual
Page 27
Problem
Probable causes
Solution
The boiler is not working.
The heating temperature setting
is too low.
Increase the value of parameter p1 or, if a room
thermostat is connected, increase the temperature.
¼See chapter: "Changing the heating
The boiler is not switched on.
4
Check that the boiler is switched on.
4
Check the fuses and switches.
4
Check that the gas valve is fully opened.
The water pressure is too low (<
1 bar).
Top up the installation with water.
¼See chapter:
"Filling the system", page 20.
An error code appears on the
display.
4
Press the Reset button for 2 seconds.
4
Correct the error if possible.
The gas pressure is too low.
Open the gas valve.
The water pressure is too low
(< 1 bar).
Not enough water in the
installation.
Top up the installation with water.
¼See chapter:
"Filling the system", page 20.
Water leak.
Contact the fitter.
Significant variations in
domestic hot water
temperature.
Insufficient water supply.
Open the valve.
Clicking in the central heating
pipes
The central heating pipe
connections are too tight.
Contact the fitter.
There is air in the heating pipes. It is essential that you bleed any air in the calorifier, the
conduits or the taps to prevent the annoying noises likely to
be produced during heating or when tapping water.
The water is circulating too
quickly in the central heating
system.
Contact the fitter.
Significant water leak under or
close to the boiler
The boiler or central heating pipes
are damaged.
Close the water supply. Contact the fitter.
MCR 24/28 BIC
6. Troubleshooting
170513 - 300024112-001-01
26