Do you have a Vokera Boiler Error Code problem?
Is your Vokera boiler giving you trouble? If it’s not working as it should, check the boiler to see if it’s displaying an error code. This should let you know what the problem is and potentially what you need to do about it.
Of course, if you’re not a Gas Safe engineer, you aren’t permitted to take the boiler’s case off, unscrew any of its panels or remove any parts. If you need to do any of those things, you’ll need a professional touch.
In addition to using the list below to diagnose your Vokera boiler error, you can speak to a qualified professional through a 15-minute video call with Herofix.com to help you identify your fault.
If you don’t see your boiler model below, or you see it but simply don’t know what to do with the knowledge that it’s your hot water negative thermistor coefficient sensor that’s playing up, don’t despair. You can book a 15-minute video call with an experienced professional through Herofix, to help you diagnose the fault.
Vokera boilers we have covered in this error code list:
Vokera Boiler Error Codes
Error Code | Fault Image | System Behaviour |
---|---|---|
_St | N/A | Autostop |
_CL | N/A | 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 | N/A | Calibration |
ACO | Service Operation | |
N/A | Flame on |
Error Code | System Behaviour |
P | Preheating function active |
P Blinking | Preheating function running |
Hours | Stand-by |
– | Off |
1 | Failure to ignite |
2 | Overheat |
3 | Problem with fan/flue |
4 | Insufficient water pressure |
5 | Reset as described for code 01 |
6 | Hot water thermistor open circuit |
7 | Primary thermistor open circuit |
Vokera Mynute Boiler Error Codes
Error Code | System Behaviour |
---|---|
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
Error Code | System Behaviour |
---|---|
E10 | Flame lockout |
E011 | Extraneous flame |
EO20 | 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 |
Vokera Boiler Red Light On
Vokera boilers without a digital display won’t have an error code to let you know what’s wrong. However, they do have red and green lights that will either remain on constantly or begin flashing, depending on the situation. Read our guide to the Vokera boiler red light on Boiler Guide to get your boiler back up and running.
Vokera Red Light Causes
If your Vokera boiler has a constant green light and no red light, there’s nothing to worry about – your boiler will provide heating and hot water as normal. However, if you see a red light on its own or alongside the green light, then there’s a potential fault with the boiler.
Below, we’ve listed the issues that can cause various sequences of light that you’re likely to see on your Vokera boiler when it’s broken.
Red Light On and Green Light Off
A constant red light on your Vokera boiler means that the unit has gone into lockout for safety reasons. Some of the possible faults behind this include:
- The boiler is overheating
- The pump isn’t circulating hot water around the central heating system or to the taps when required
- Potentially harmful flue gases aren’t being expelled due to an issue with the fan
Red and Green Lights On
If you’re seeing both red and green lights on your Vokera boiler at the same time, whether they’re remaining on or flashing, your boiler could have one of the following problems:
- It has been left in service mode after a recent boiler service
- Incorrect water pressure (either too low or too high)
- Heating temperature sensors are faulty
Flashing Green Light
A constant green light on your Vokera boiler is a sign that the flame within the boiler is working. That’s what you want to see. Should the green light start flashing, that’s when there could be an issue to worry about, including a faulty hot water sensor of the boiler being in standby.
How to Reset a Vokera Boiler
A simple reset could be enough to stop your Vokera boiler from flashing red and get the unit working to heat your home and hot water again.
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. If not, you should hire a Gas Safe engineer to come out and look over your boiler.
How to Reset a Vokera Boiler
Vokera boilers with a digital display will show an error code alongside the red light, which will help to get to the root cause faster than the boilers without a display.
A common Vokera boiler error code is A01. This means that the boiler has failed to ignite. There are many reasons why a boiler might fail to ignite, from no gas supply to a faulty ignition lead or PDB board. You’ll need a Gas Safe engineer to diagnose and repair the A01 fault, as you should never carry out any work on your gas boiler yourself.
If you’re in any doubt, it’s important to consult a professional heating engineer. You can book at 15-minute video call at Herofix.com.