Why is my Vokera boiler not working?

Asked By: Efrem Zato | Last Updated: 14th May, 2020
Category: business and finance mechanical and industrial engineering industry
4.6/5 (461 Views . 42 Votes)
There are many possible reasons why a Vokera boiler will fail to ignite: faulty ignition leads or electrode (needed to make the spark to create the flame), blocked flue or condensate pipe, issue with the gas valve or a printed circuit board (PCB) fault.

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Similarly, how do you reset a Vokera boiler?

To reset your Vokera boiler, move the mode selector switch to the 'OFF/RESET' position and then move it back to either 'hot water only' or 'heating and hot water'. Should this reboot get your boiler working again then you'll know because there will be a constant green light.

Secondly, how good is a Vokera boiler? Reliability. In terms of reliability, Vokera boilers are thought to be around middle of the line, and are pretty reliable for around the first five years after purchase. Longer term, Vokera boilers can run into difficulties, mainly due to their cheaper, Italian-manufactured components.

Simply so, how do I reset my boiler?

Only press the reset button once; repeatedly pressing the button may damage the control panel, leading to an expensive repair. Hold the reset button for 3 seconds before releasing. If your boiler displays a flashing green light, it should have successfully reset.

How do I turn on my Vokera boiler?

Ensure the gas and electrical supplies to the boiler are turned on. Turn the mode switch to the 'heating & hot water' position. The status indicator should be 'Green' if the status indicator is flashing 'Red' refer to 3.2.

36 Related Question Answers Found

How do I reset my classic boiler?

To reset boiler, turn the mode control knob (D) to reset position and immediately turn knob back to required setting. The boiler will repeat the ignition sequence. If the boiler still fails to light consult a Gas Safe Registered Engineer or in IE a Registered Gas Installer (RGII).

Why is my Vokera boiler bubbling?

Most heating systems run at a pressure of between 1 and 1.5 bar (check your boiler handbook for specific pressure). A build up of sludge (a mixture of rust and limescale) can build up in your system over time, this can cause gurgling. Badly fitted pipes can cause banging as the pipes expand when they get hotter.

What does a red light mean on a Vokera boiler?

You could be seeing a red light on your Vokera boiler alongside the A01 error code, if so, this means that the boiler has failed to ignite. There are number of reasons why the A01 fault can appear on Vokera boilers, one being an issue with the gas supply.

What does a green light mean on a boiler?

The flashing green light at the Central Heating means that the heating has been called for to turn ON/OFF.

Why has my boiler locked out?


A boiler lockout is a shut-down procedure that is initiated when a boiler is not working within certain tolerances. This could be due to low/high water pressure, lack of or no fuel supply (gas, LPG or oil), a blockage in the system or lack of power to electronic components.

What does a red light mean on a boiler?

The red light on the display panel indicates a fault with your boiler. The way in which the light is flashing will help indicate the problem. For those that have a digital display, the red-light fault indicator should also be coupled with a fault code. A red light that keeps coming on, and staying on.

How do I fix low pressure on my boiler?

4. Can I fix low boiler pressure myself?
  1. Switch off and allow your boiler to cool.
  2. Double-check that both ends of the filling loop are securely attached.
  3. Open both valves, to allow cold mains water into the system (you should hear it)
  4. Wait for the pressure gauge to read 1.5 bar.
  5. Close both valves, one after the other.

Is low boiler pressure dangerous?

The good news is that low boiler pressure is nothing to panic about and is not likely to cause any damage to your boiler. On the other hand, it can have a real effect on the efficiency and effectiveness of your heating system, making it hard to keep your house warm and costing you more on your energy bills.

What causes low pressure on a boiler?

What causes low boiler pressure? Whilst the common cause of low boiler pressure is a leak within the heating system, a water pressure gauge which is inconsistent (alternating between high pressure and low pressure depending whether the boiler is hot or cold) may suggest that the pressure vessel needs replacing.

What pressure should my boiler be at when it is running?


Generally, your boiler pressure should be between 1 and 2 bar. However, read your boiler's manual or ask your heating engineer for the required pressure for your particular model. To check your boiler's pressure, you need to locate the pressure gauge on your boiler.

How do I fix my boiler?

Make sure the boiler is turned off and the ends of the hose are attached to the valves. Open the valves and you should be able to hear water filling up the system. Watch the pressure indicator until it reaches 1.5, then close the valves and switch the boiler back on.

How do I add water to my boiler?

Adding Water to Boiler
  1. Turn off the heat from the thermostat and allow the boiler to cool completely before filling. This is especially important if the sight glass is empty of any water.
  2. Check the water level in the sight glass.
  3. Pull the handle of the water feed valve back to allow water to flow into the boiler.

What do you do when your boiler won't turn on?

  1. Double check the basics. First of all, if you have a prepayment meter, check that you've got enough credit.
  2. Think back to if you've had a power cut recently.
  3. Check your boiler's pressure gauge.
  4. Turn your room thermostat to 21 degrees or higher.
  5. Reset your boiler, or check that its pilot light is on.

Does a boiler have a fuse?

To stop damaging electrical components in your boiler, manufacturers fit them with a fuse. If there's a surge of power, the fuse has likely blown, and this will cause your boiler to have no power. Your boiler won't turn on without a functioning fuse. Change the fuse, and you should get power back to your boiler.

Why is my boiler heating water but not radiators?


Things to check on your boiler. If your boiler works but the radiators are not heating up, the likely cause could be a faulty boiler pump or your central heating controls. If your boiler works but the radiators are not heating up, then the likely cause is a faulty boiler pump or your central heating controls.

Where is the fuse on my boiler?

If it's not there, it's usually in the cupboard under the stairs. Open the flap and look for a fuse pointing down in the off position. Lots of modern fuseboards have each circuit labelled, like the one in the picture. You can see the “water heater” fuse that supplies the boiler is pointing down, which means it's off.

Why isn't my boiler firing up?

A blockage in the burner could lead to the boiler not firing up to provide your home with heating and hot water. A Gas Safe registered engineer will be able to clean the burner or replace it, if necessary.