DeDietrich Vivadens MCR-P 24, User Manual

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7.2 Incidents and solutions
Problem Probable causes Solution
There is no domestic hot water.
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 DHW mode is deactivated. Activate the DHW mode.
The water pressure is too low (<
1 bar).
Top up the installation with water. ¼ See chapter:
"Filling the system", page 23.
The energy-saving shower head is
restricting the water flow.
Clean the shower head; replace if necessary.
The radiators are cold.
The heating temperature setting is
too low.
Increase the value of parameter
p1
or, if a room
thermostat is connected, increase the temperature.
The heating mode is deactivated. Activate the heating mode.
The radiator valves are closed. Open the valves on all radiators connected to the
heating system.
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. ¼ See chapter:
"Filling the system", page 23.
The boiler is not working.
The heating temperature setting is
too low.
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. ¼ See chapter:
"Filling the system", page 23.
An error code appears on the
display.
4
Press the Reset button for 2 seconds.
4
Correct the error if possible. ¼ See chapter:
"Error codes", page 27.
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.
¼ See chapter:
"Filling the system", page 23.
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.
7. Troubleshooting MCR-P 24/28 BIC PLUS
29 170915 - 127686-04