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7. Troubleshooting
7 Troubleshooting
Checks to make before calling your fitter:
Faults
The boiler stops soon after ignition.
The fan often comes on while the
boiler is operating.
The extractor fan does not work.
Flue gases are escaping from the
loading door.
The radiators are cold.
There is no domestic hot water.
For all other problems: Contact the fitter.
Before informing the fitter of a fault, make a note of the following
information:
- Product type
- Year of manufacture
- Serial number
This information can be found on the rating plate stuck to the side
panel of the boiler.
14
Probable causes
The fire has not properly taken (the set
temperature has not been reached). The flue
gas thermostat has turned the boiler off.
The boiler thermostat is set too low.
The storage tank load pump does not work.
The thermostats are set incorrectly.
The boiler is not switched on.
The extractor fan is clogged.
The door seals are not airtight.
The heating outlet and return valves are closed. Open valves.
Boiler fitted with a control unit:
The control unit is not correctly set.
The boiler thermostat and/or the remote control
are not correctly set.
The water level and/or pressure are too low.
The radiator valves are closed.
The heating circulator pump and/or the storage
tank load pump do not work.
The 3-way valve does not open automatically.
The domestic hot water calorifier load pump
does not work.
There is air in the primary circuit (exchanger)
on the domestic hot water calorifer.
CBI-II / CBB 15 E
Fault finding
Relight the fire.
See chapter: Ignition
Increase the boiler thermostat setting.
Turn the unlocking screw located at the centre of the pump with a
screwdriver. If the pump still does not work, contact the fitter.
Adjust the thermostats.
See chapter: Commissioning
Turn the boiler on.
Clean the extractor fan.
See chapter: Cleaning the flue gas collector (Around 1 time per
month).
Get the fitter to adjust the doors.
Have the fitter replace the seals if necessary.
Check the settings
See: Control unit instructions
Increase the setting.
Fill the installation and bleed the radiators.
Open valves.
Turn the unlocking screw located at the centre of the pump with a
screwdriver.
Open the valve.
Contact the fitter.
Turn the unlocking screw located at the centre of the pump with a
screwdriver.
Activate the automatic bleed on the domestic hot water calorifier.
16/06/2009 - 300019729-001-C
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