Troubleshooting - DeDietrich MCR 24, MCR 24/28MI, MCR 30/35MI, MCR 34/39MI Manual

Problem
There is no domestic hot water
The radiators are cold
The boiler is not working
The water level and/or pressure are
too low (<1 bar)
Significant variations in domestic hot
water temperature
Clicking in the central heating pipes/
Radiator circuit
Significant water leak under or close
to the boiler
When you inform your fitter of an error, tell him:
- Boiler type,
- Serial number. These indications can be found on the rating plate
affixed on the bottom of the boiler.
- Type of gas used.
12

Troubleshooting

Probable causes
The boiler is not working
The water level and/or pressure are too low
(<1 bar)
The energy-saving shower head is allowing too little
water to pass
The boiler thermostat is set too low
The radiator valves are closed
The boiler is not working
The water level and/or pressure are too low
The boiler thermostat is set too low
The boiler is not working
The water level and/or pressure are too low
Internal problem
The minimum operating pressure of the gas must
be sufficiently high
The water level and/or pressure are too low
Carry out a visual check for the presence of any
water leaks
Insufficient water supply
The central heating pipe connections are too tight
Ensures that there is no air in the heating pipes
The water is circulating too quickly in the central
heating system
The boiler or central heating pipes are damaged
MCR 24, 24/28MI, 30/35MI, 34/39MI
Solution
Check that the boiler is switched on
Check the fuses and switches
Gas stop valve open
Check the water pressure in the installation
Clean the shower head; replace it if necessary
Set the room thermostat or the regulator
Open the valves on all radiators connected to the heating
system
Check that the boiler is switched on
Check the fuses and switches
Gas stop valve open
Top up the installation with water
Set the room thermostat or the regulator
Check that the boiler is switched on
Check the fuses and switches
Gas stop valve open
Top up the installation with water
To restart the boiler, press the reset button: Reset
Correct the error if possible. If the problem persists, consult
your fitter
Check the gas pressure upstream from the boiler
Check that the manometer is working correctly
Top up the installation with water
Contact your fitter
Check the pressure of the installation: Open the valve
Loosen the connections
Grease the connections
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 drawing off water
Contact your fitter
Contact your fitter
08/06/06 - 300008487-001-A