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 the 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
System Behaviour
P
Preheating function active
P Blinking
Preheating function running
Hours
Standby
—
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
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
Fault Code
System Behaviour
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
If any of the above error codes keep appearing on your Vokera boiler, contact a professional heating engineer to find the fault and repair your boiler.
Vokera Boiler Red Light On
Vokera boilers without a digital display won’t have an error code to let you know what’s wrong with the boiler, 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 to get your boiler back up and running.
