Vokera Boiler Error Codes, Causes & Fixes
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Common Vokera boiler problems, fault codes & errors guide
A Vokera boiler breaking down is not ideal, therefore in this article will cover all errors and fault codes regarding Vokera Boilers, so you can identify any problems you might have with your Vokera boiler to get you back up and running in no time.
Before we get into the details, here are some facts about Vokera. Vokera was founded over 35 years ago and has offices in the UK as well as Ireland.
Vokera’s parent company, Riello Group, was established in 1922 and is well-known for its leadership as a global supplier of heating appliances and guarantees that all boilers are tested before they leave the warehouse.
See which Vokera boiler came top of our worst boilers review here.
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What does the red flashing light on a Vokera boiler mean?
Vokera boilers that have a red light flashing or constantly on, are likely to be in fault and lockout, leaving you without heat and hot water. If you have a relatively new boiler, check your Vokera boiler warranty as the issue may be covered by that and you can get your boiler fixed free of charge.
This issue could be caused by many things, so you need to hire a Gas Safe engineer who can diagnose the problem and repair your Vokera boiler, but in the meantime, this guide will help you find the root cause of your Vokera boiler’s red light and get your heating and hot water working again.
Vokera Boiler Red Light Causes
Vokera boilers have a constant green light and no flashing red lights when it is working properly and means that your boiler will continue to provide hot water and heating as usual, unless your boiler’s red light appears in addition to the green light though, then it could indicate a problem and you will need to check the Vokera fault code guide to fix the problem.
Below are the possible causes of various light sequences that you might see on your Vokera boiler if it breaks.
Green Light Off and Red Light On
The unit is in a boiler lockout because and will be showing a constant red light on the Vokera boiler. This could be due to:
- The boiler is getting too hot (overheating)
- The pump doesn’t circulate hot water to the central heating system, or to the taps as required.
- A problem with the fan means that potentially harmful flue gasses are not being expelled.
Green and Red Lights on
Your boiler may have one or more of these problems:
- After a recent boiler service, it was left in service mode.
- The water pressure is not at the right level and is either too low or high
- The heating temperature sensors can be faulty
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Flashing green light on Vokera boiler
The constant green light from your Vokera boiler indicates that the boiler’s flame is functioning and this is what you want to look for however if the green light starts flashing, it could indicate that there is an issue. Check your Vokera boiler thermostat or controls to start the boiler up and see if it is working properly.
- Hot water sensor not working
- Boiler on standby
Resetting a Vokera Boiler
It is possible to reset your Vokera boiler to turn off the flashing lights and make it work again to heat your home or hot water.
Reset your Vokera boiler by moving the mode selector switch to ‘OFF/RESET’ and then moving it back to ‘hot water only or ‘heating hot water’. If your boiler works again after this reboot, you will know it because the light will continue to glow green. If your boiler is not working, you can hire a Gas Safe engineer.
| Fault Code | Issue |
|---|---|
| _St | Autostop |
| _CL | Call for service |
| A01 | Ignition failure flame not sensed – internal fault |
| A02 | Limit thermostat fault |
| A03 | Fan fault |
| A04 | Insufficient system water pressure |
| A06 | Domestic how water (DHW) thermistor fault |
| A07 | Primary flow thermistor fault – temperature of water is too high. |
| A08 | Return thermistor fault – water temperature too high. |
| A09 | Flue thermistor or flue thermistor counter fault. |
| A11 | False flame |
| A77 | Low temperature thermostat fault |
| ADJ | Calibration |
| ACO | Service operation |
| N/A | Flame on |
| Fault Code | Issue |
|---|---|
| P | Preheating function active |
| P Blinking | Preheating function running |
| Hours | Stand-by |
| — | Off |
| 01 | Failure to ignite |
| 02 | Overheat |
| 03 | Problem with fan/flue |
| 04 | Insufficient water pressure |
| 05 | Reset as described for code 01 |
| 06 | Hot water thermistor open circuit |
| 07 | Primary thermistor open circuit |
Vokera Mynute Boiler Error Codes
| Fault Code | Issue |
|---|---|
| AL10, AL20, AL21, AL26, AL28, AL34 | Try resetting the boiler, if the fault reoccurs you need to contact a heating engineer. |
| AL40 | Check the system’s pressure and refill if necessary. Reset the boiler, if the fault reoccurs then you need to contact a heating engineer. |
| AL41 | Check system pressure – refill if necessary. If fault reoccurs, contact a heating engineer. |
| AL52, AL55, AL60, AL71,AL73, AL74, AL79 | Contact a heating engineer. |
| AL74, AL79 | Reset the boiler. If the fault reoccurs, contact a heating engineer. |
Evolve Combi Evolve System Error Codes
| Fault Code | Issue |
|---|---|
| E10 | Flame lockout |
| E011 | Extraneous flame |
| E020 | Limit thermostat |
| E030 | Fan fault |
| E040 | Water transducer – check system water pressure |
| E041 | Water transducer – check system water pressure |
| E042 | Water transducer fault |
| E060 | Domestic hot water probe fault |
| 4070 | Fault flow sensor over temperature – flow sensor flow/return line probe differential alarm |
| E077 | Main zone water thermostat |
| E080 | Error with return line probe – over temperature outlet or differential alarm |
| E090 | Flue gases over temperature probe |
| E091 | Clean primary heat exchanger |
| — | Water pressure low |
| — | Water pressure high |
| — | Boiler board communication lost |
| — | BUS 485 communication lost |
| E021, E022, E023, E024, E067. E088, E097 | Iono alarm |
| E085, E094, E095 | Combustion fault/high CO |
| E058 | Main voltage error |
| E065 | Current modulation alarm |
| E086 | Obstruction fumes alarm |
Fixing a Vokera boiler & maintenance
Looking after your boiler is important as you don’t realise how much you use it till it’s not there. Ensure that You get your Vokera boiler service every year to ensure that your boiler is maintained and is running efficiently.
This can stop hefty repairs bills and fix problems before they arise. You can however get a service plan with Boiler Central or a boiler cover plan which covers the costs of breakdowns and repairs if your boiler is not under warranty and also includes the cost of a boiler service.
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