Incidents and solutions, 2 incidents and solutions – DE DIETRICH VIVADENS MCR 24, MCR .._.. MI User Manual
Page 27
6.2
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.
¼See chapter: "Stopping domestic hot water
The water pressure is too low (<
1 bar).
Top up the installation with water.
¼See chapter:
"Filling the system", page 20.
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.
¼See chapter: "Changing the heating
The heating mode is deactivated.
Activate the heating mode.
¼See chapter: "Stopping the central heating or
activating the Summer mode", page 15.
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.
¼See chapter:
"Filling the system", page 20.
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.
MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI
6. Troubleshooting
160513 - 300015874-001-01
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