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Fault Possible cause Corrective action
3.2 Fault finding
Blocked pilot burner
Blocked chimney
Safety thermostat
Thermocouple defective
Thermocouple makes no
contact
Gas supply closed
The thermostat is not
connected to the
thermocouple
Temperature is set too
low
Control knob in position
(✸) (pilot burns )
Control knob in position
(l)
Flue safety device closed
the gas supply
Gas supply closed
Gas smell
Pilot
extinguishes
Insufficient
hot water, or
none at all
If you smell gas you should immediately
close the main gas tap you should not
light any fire or switch on light,
electrical switches or bells. Open
windows and immediately contact your
installer or the local gas company.
Clean the pilot burner
Find the cause and remove it.
Set the temperature regulator at a lower
temperature.
Replace the thermocouple
Restore the connection
Open the gas tap
Connect the two wires to the thermo-
couple
Set the temperature regulator at a higher
temperature
Turn the temperature regulator
completely clockwise; turn control button
to “on” ( ); turn the temperature
regulator to the desired position,
preferably position 4. The appliance now
operates fully automatically.
Put the appliance into operation.
Press the reset button - if present - on
the safety thermostat and put the
appliance into operation. If this occurs
more often then you should inform your
installer.
Open the gas tap and put the appliance
into operation.