Vokera Fault Codes

Welcome to the fault-codes section of this site. The following table or page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. You may be guided through the fault finding sequence or steps, for rectifying your boiler with this fault code. Suggested repair solutions may be provided by a link to a repair page. NB Some fault codes are only applicable to a specific range of boilers only.

CodeRepairMeaningModels
_StLinkAutostopNew
_CLLinkCall for serviceNew
A01LinkIgnition failure flame not sensed Ð internal faultNew
A02LinkLimit thermostat faultNew
A03LinkFan faultNew
A04LinkInsufficient system water pressureNew
A06LinkDomestic how water (DHW) thermistor faultNew
A07LinkPrimary flow thermistor fault Ð temperature of water is too high.New
A08LinkReturn thermistor fault Ð water temperature too high.New
A09LinkFlue thermistor or ßue thermistor counter fault.New
A11LinkFalse flameNew
A77LinkLow temperature thermostat faultNew
ADJLinkCalibrationNew
ACOLinkService operationNew
N/ALinkFlame onNew
PLinkPreheating function activeNew
P BlinkingLinkPreheating function runningNew
HoursLinkStand-byNew
-LinkOffNew
01LinkFailure to igniteNew
02LinkOverheatNew
03LinkProblem with fan/flueNew
04LinkInsufficient water pressureNew
05LinkReset as described for code 01New
06LinkHot water thermistor open circuitNew
07LinkPrimary thermistor open circuitNew
E10LinkFlame lockoutEvolve Combi
E011LinkExtraneous flameEvolve Combi
E020LinkLimit thermostatEvolve Combi
E030LinkFan faultEvolve Combi
E040LinkWater transducer Ð check system water pressureEvolve Combi
E041LinkWater transducer Ð check system water pressureEvolve Combi
E042LinkWater transducer faultEvolve Combi
E060LinkDomestic hot water probe faultEvolve Combi
4070LinkFault flow sensor over temperature Ð flow sensor flow/return line probe differential alarmEvolve Combi
E077LinkMain zone water thermostatEvolve Combi
E080LinkError with return line probe Ð over temperature outlet or differential alarmEvolve Combi
E090LinkFlue gases over temperature probeEvolve Combi
E091LinkClean primary heat exchangerEvolve Combi
-LinkWater pressure lowEvolve Combi
-LinkWater pressure highEvolve Combi
-LinkBoiler board communication lostEvolve Combi
-LinkBUS 485 communication lostEvolve Combi
E021, E022, E023, E024, E067. E088, E097LinkIono alarmEvolve Combi
E085, E094, E095LinkCombustion fault/high COEvolve Combi
E058LinkMain voltage errorEvolve Combi
E065LinkCurrent modulation alarmEvolve Combi
E086LinkObstruction fumes alarmEvolve Combi
AL10, AL20, AL21, AL26, AL28, AL34LinkTry resetting the boiler, if the fault reoccurs you need to contact a heating engineer.Mynute
AL40LinkCheck the systemÕs pressure and refill if necessary. Reset the boiler, if the fault reoccurs then you need to contact a heating engineer.Mynute
AL41LinkCheck system pressure Ð refill if necessary. If fault reoccurs, contact a heating engineer.Mynute
AL52, AL55, AL60, AL71,AL73, AL74, AL79LinkContact a heating engineer.Mynute
AL74, AL79LinkReset the boiler. If the fault reoccurs, contact a heating engineer.Mynute

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