Incidents And Solutions - Vivadens MCR 24 User Manual

MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI
6.2

Incidents and solutions

Problem
There is no domestic hot water.
The radiators are cold.
The boiler is not working.
The water pressure is too low
(< 1 bar).
Significant variations in
domestic hot water
temperature.
160513 - 300015874-001-01
Probable causes
The boiler is not switched on.
The DHW mode is deactivated.
The water pressure is too low (<
1 bar).
The energy-saving shower head
is restricting the water flow.
The heating temperature setting
is too low.
The heating mode is deactivated.
The radiator valves are closed.
The boiler is not switched on.
The water pressure is too low (<
1 bar).
The heating temperature setting
is too low.
The boiler is not switched on.
The water pressure is too low (<
1 bar).
An error code appears on the
display.
The gas pressure is too low.
Not enough water in the
installation.
Water leak.
Insufficient water supply.
Solution
Check that the boiler is switched on.
4
Check the fuses and switches.
4
Check that the gas valve is fully opened.
4
Activate the DHW mode.
¼See chapter: "Stopping domestic hot water
production", page 16.
Top up the installation with water.
"Filling the system", page 20.
Clean the shower head; replace if necessary.
Increase the value of parameter p1 or, if a room
thermostat is connected, increase the temperature.
¼See chapter: "Changing the heating
temperature", page 13.
Activate the heating mode.
¼See chapter: "Stopping the central heating or
activating the Summer mode", page 15.
Open the valves on all radiators connected to the heating
system.
Check that the boiler is switched on.
4
Check the fuses and switches.
4
Check that the gas valve is fully opened.
4
Top up the installation with water.
"Filling the system", page 20.
Increase the value of parameter p1 or, if a room
thermostat is connected, increase the temperature.
¼See chapter: "Changing the heating
temperature", page 13.
Check that the boiler is switched on.
4
Check the fuses and switches.
4
Check that the gas valve is fully opened.
4
Top up the installation with water.
"Filling the system", page 20.
Press the Reset button for 2 seconds.
4
Correct the error if possible.
4
"Error codes", page 25.
Open the gas valve.
Top up the installation with water.
"Filling the system", page 20.
Contact the fitter.
Open the valve.
6. Troubleshooting
¼See chapter:
¼See chapter:
¼See chapter:
¼See chapter:
¼See chapter:
26