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What to do if the boiler has shut down?

Please follow these steps to get your boiler up and running again: 

  1. Switch your boiler off at the control panel, and unplug the unit from the wall. 
  2. Wait 30 secs, then plug the unit back in.
  3. If the boiler does not restart, refer to the installation manual.

What should the pressure gauge on my boiler be reading?

The normal operating water pressure for your boiler and central heating system is between 1.0 and 2.0 bar. If the pressure drops below 1.0 bar, you need to repressurise it. If the pressure goes above 3.0 bar, you will see water coming from the pressure relief valve. You can reduce the pressure by bleeding a radiator or draining some water out of the system using a drain point, usually found underneath a radiator.

Why isn’t my water hot?

Combi boilers provide central heating and instant hot water from one single unit. When you turn on the hot tap, a diverter valve inside the boiler opens to let water into the heat exchanger, temporarily closing off the water used for your space heating. When you turn off the hot water the valve switches back to divert heat back to your radiators.

If the water at your tap isn’t hot, it's possible that the diverter valve is either worn, faulty or just stuck in the 'radiator position', therefore not allowing the water to heat up in the first place. If you are a contractor and need assistance, please call 844 422 9462.  If you are a homeowner, please call your servicing contractor for assistance.

My hot water fluctuates. Is this right?

No, this is not right.  Call you local servicing contractor to have your system checked.

How often do I need to have my boiler serviced?

Your boiler should be serviced annually by a contractor to make sure it is working safely and efficiently. 

Where can I find the serial number of my boiler?

The serial number can usually be found inside the cover on the right sidewall of the boiler. Some older boilers have a tag underneath that slides out to reveal the serial number. If you can’t find your serial number, call Baxi Customer Support 844 422 9462 with the name of your boiler and they will help you find it.

How old is my boiler?

The boiler’s serial number can usually be found on the drop down panel on the front. The serial number has all the information needed for us to tell you when your boiler was manufactured. 

If your boiler was manufactured after 2003, the serial number will look like this, and you can find out the year it was made:

Where in my house should my boiler be installed?

You can have your boiler installed in most rooms, however a few things to consider:

  • Your boiler should be installed inside a building and can be fitted to any suitable wall strong enough to take its weight when full of water.
  • The boiler's flue must be able to pass to the outside, either through an outside wall or through the roof. The boiler installation manual gives the minimum legal distances the flue terminal must be from windows, air bricks, other buildings etc, to comply with Building Regulations.
  • As well as the flue, you must consider where to fit the condensate pipe that takes away the liquid that condenses as the gases cool inside the boiler. We recommended that this pipe discharges internally into the household drainage system. If the condensate pipe is fitted outside, it could freeze during cold weather and make the boiler shut down.
  • If you decide to have it fitted in a garage or outhouse, we recommend you get additional frost protection fitted to protect the system pipework, even if the boiler has its own frost protection. When positioning the boiler, you must allow sufficient clearances and access for servicing. Please check the installation instructions for details.
  • The boiler may be fitted inside a closet without having air vents. Modern boilers are room sealed and will run sufficiently cool without ventilation.
  • Your installer will be able to survey your home and tell you the most convenient, safest and legally compliant place for your boiler and discuss where the flue and condensate pipe should go.