Updated: June 14, 2024

Is your Vokèra boiler acting up? Flashing lights and cryptic error codes can be frustrating, leaving you wondering what’s wrong and how to fix it. But fear not, homeowners! This guide will equip you with the knowledge to understand Vokèra boiler fault codes and take informed steps towards getting your heating and hot water.

What are boiler fault codes?

Boiler fault codes are alphanumeric codes displayed on the control panel or digital display of a boiler. These codes are generated by the boiler’s internal diagnostic system and are used to indicate specific faults or issues that the boiler has detected. They serve as a troubleshooting tool for both homeowners and heating engineers to identify and diagnose problems with the boiler.

Each boiler manufacturer has its own set of fault codes, and the meaning of the codes can vary between different models and brands. When a fault occurs, the boiler will display a specific code that corresponds to the detected issue. It can be a combination of numbers, letters, or a combination of both.

Vokèra Boiler Fault Codes

On this page, you will find all the error or fault codes related to your Vokera boiler. This can help you identify what issues you might be facing with your current Vokera boiler.

35 years ago Vokera was established. The company has bases in both the UK and Ireland as well. Moreover, Vokera has a parent company which is called Riello Group. Riello was founded in 1922. They are known for their status as a leading global provider of many other heating appliances.

It was announced in 2018 that Vokera was among the finalist at the H&V News Awards in the Domestic Heating product of the year category. Vokera states that they are a leading manufacturer of heating appliances.

What is more, they offer a wide range of fantastic products that are designed to suit your home needs. With Vokera you get a 99% reliability rate within the first two years of installation on all products.

Read about: A Comprehensive Guide to Getting a Boiler Service 

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Vokera has a range of combi and system boilers with different kW options to suit homes of different sizes.

Vokera states that 100% of their boilers are tested before leaving the warehouse. so you might be one of the unlucky 1% who experience a breakdown in the first couple of years. However, in most cases your boiler might be a bit older and that is why it has encountered a fault.

That being said, boilers of top quality do sometimes tend to have certain issues. On this page you will find the error codes or faults of Vomera boilers and what they indicate, in addition to possible ways to fix these issues.

Read more: Common Sime Boiler Error Codes

Ferroli Boiler Error Codes / Fault codes List

Vokera Boiler Red Light on Error: Cause and Fix

A flashing or constant red light means that your boiler has a fault and will possibly lockout. As a result, your home will be without hot water or heating.

Several issues can be casing this. It is, of course, recommended that you should consult a Gas Safe engineer to fix this find the right cause and fix your problem. However, on this page we can help you know what might be causing this issue.

Causes of Vokera Red Light:

Vokera boilers with constant green light and no red light can indicate that there is nothing to worry about and your boiler will supply heating and hot water as it should. However, if you see a red light on its own or alongside the green light then there might be a possible fault with your boiler.

Red Light On and Green Light Off Meaning

A constant red light on your Vokèra boiler indicate that the unit has gone into lockout for safety reasons and to prevent further damage. Some of the potential faults behind this can include:

  • The pump is not circulating hot water around the central heating system or to the taps when needed.
  • Harmful flue gases are not being expelled because of an issue with the fan.
  • The boiler is overheating

Red and Green Lights On Meaning

If you can see both green and red lights on your Vokera boiler at the same time, whether they’re constant or flashing, your boiler might have one of the following issues:

There is a fault in Heating temperature sensors

Incorrect water pressure (either too low or too high)

Flashing Green Light Meaning

A constant green light on your Vokera boiler is a sign that the flame within the boiler is working, and that’s what you want to see. if the green light start flashing, that’s when you know there might be something wrong with your boiler.

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Read about: Biasi Boiler Error Codes / Fault Codes 

How to Reset a Vokera Boiler?

By simply resetting your boiler, you could fix the problem and stop your boiler from flashing red light.

In order to reset your Vokera boiler, you should 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’.

If this reboot get your boiler operating again then you will know because there will be a constant green light. If not, you should hire a Gas Safe engineer to come out and take a look over your boiler.

Vokera Boilers Error Codes

Error Code The Problem
_CLCall for service
A01Ignition failure flame not sensed – internal fault
A01Limit thermostat fault
A03Fan fault
A04Insufficient system water pressure
A06Domestic how water (DHW) thermistor fault
A07Primary flow thermistor fault – temperature of the water is too high
A08Return thermistor fault – water temperature too high
A09Flue thermistor or flue thermistor counter fault
A11False flame
A77Low-temperature thermostat fault
ACOService operation
N/AFlame on
Error CodeThe Problem
PPreheating function active
P Blinking Preheating function running
Hours Stand-by
01Failure to ignite
03Problem with fan/flue
04Insufficient water pressure
05Reset as described for code 01
06Hot water thermistor open circuit
07Primary thermistor open circuit

Read more: Main Boiler Error Codes / Fault Codes

Vokera Mynute Boiler Error Codes

Fault Code System Behaviour
AL10, AL20, AL21, AL26, AL28, AL34Try resetting the boiler, if the fault reoccurs you need to contact a heating engineer
AL40Check the system’s pressure and refill if necessary. Reset the boiler, if the fault reoccurs then you need to contact a heating engineer
AL41Check system pressure – refill if necessary. If the fault reoccurs, contact a heating engineer
AL52, AL55, AL60, AL71,AL73, AL74, AL79Contact a heating engineer
AL74, AL79Reset the boiler. If the fault reoccurs, contact a heating engineer

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Ravenheat Boilers Error Codes / Fault Codes List

New Boiler Cost

Vokera Evolve Combi Boiler Error Codes | Vokera Evolve System Boiler Error Codes

Error Code The Problem
E10Flame lockout
E011Extraneous flame
E020Limit thermostat
E030Fan fault
E040Water transducer – check the system water pressure
E041Water transducer – check the system water pressure
E042Water transducer fault
E060Domestic hot water probe fault
4070Fault flow sensor over temperature – flow sensor flow/return line probe differential alarm
E077Main zone water thermostat
E080Error with return line probe – over-temperature outlet or differential alarm
E090Flue gases over temperature probe
E091Clean primary heat exchanger
Water pressure low
Water pressure high
Boiler board communication lost
BUS 485 communication lost
E021, E022, E023, E024, E067. E088, E097Iono alarm
E085, E094, E095Combustion fault/high CO
E058Main voltage error
E065Current modulation alarm
E086Obstruction fumes alarm

In certain situations, replacing your old boiler with a new one can be a more cost-effective solution than repairing it. Some boiler issues can be expensive to fix, and investing in a new boiler may offer long-term benefits. Not only can a new boiler be more efficient, but it can also help save money and energy. It’s a wise investment for the future.

Obtain a quotation from Let’s Heat, where we offer a wide range of products. Our team of Gas Safe engineers delivers professional and reliable service. We can assist you in selecting the boiler that best suits your home and heating requirements.

Read more about:

Intergas Boiler Error Codes / Fault

Combi boilers common faults  

Navien Boiler Error Codes / Fault Codes


What pressure should my Vokera boiler be at?

The pressure gauge shows the current pressure of the system, the gauge should be set between 1 and 1.5 bar. When the appliance is operating the gauge may rise or fall slightly, this is quite normal. The minimum permissible level for the safe and efficient operation of the appliance is 0.5 bar.

How do I 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.

What does flashing green light mean on Vokera boiler?

The green LED should be flashing, you may now select either HOT WATER ONLY or HEATING AND HOT WATER. By turning on a hot water outlet (tap) the boiler will fire to deliver hot water.