Vokera boiler fault codes

_CLCall for service
A01Ignition failure flame not sensed – internal fault
A02Limit thermostat fault
A03Fan fault
A04Insufficient system water pressure
A06Domestic how water (DHW) thermistor fault
A07Primary flow thermistor fault – temperature of 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

PPreheating function active
P BlinkingPreheating function running
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

Vokera Mynute Boiler Error Codes

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 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.

Evolve Combi Evolve System Error Codes

E10Flame lockout
E011Extraneous flame
E020Limit thermostat
E030Fan fault
E040Water transducer – check system water pressure
E041Water transducer – check 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

Vokera Boiler Red Light On: Cause & Fix

Vokera boilers with a red light, that’s either flashing or on constantly, have a fault and will most likely lockout, leaving your home without heating and hot water.

There are many potential faults that could be causing this issue and you should hire a Gas Safe engineer to diagnose and fix the fault with your Vokèra boiler. However, my guide will get you closer to the reason why your Vokera boiler is showing a red light so that your heating and hot water will work once again.

Vokera Red Light Causes

Vokera boilers with constant green light and no red light mean there’s nothing to worry about and your boiler will provide heating and hot water as normal. However, should you see a red light on its own or alongside the green light then there could be a potential fault with your boiler.

Below, we’ve listed the issues that can cause various sequences of light you’re likely to see on your Vokèra boiler when it’s broken.

Red Light On and Green Light Off

A constant red light on your Vokèra 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