V
Vokera Fault Codes
Select a fault code to see its meaning, common causes and how to fix it.
Compact, Vision & Unica codes
- 01 The Vokera A01 fault code (also displayed as fault code 10 on some Linea models) means the boiler attempted to light… Read more →
- 02 Fault code 02 — displayed as A02 on many Vokèra models and E020 on newer Evolve variants — indicates that the boiler's… Read more →
- 03 The 03 code (displayed as A03 on some Vokera models) tells you the boiler has detected a problem with the flue fan —… Read more →
- 04 The Vokera A04 fault code indicates that the water pressure in your central heating system has dropped below the… Read more →
- 05 Fault code 05 on Vokera boilers has two distinct meanings depending on your model. On the Syntesi, Linea, and Linea… Read more →
- 06 Fault code 06 (shown as A06 on newer Vokèra models, and E060 on Evolve models) tells you that the boiler's domestic hot… Read more →
- 07 Fault code 07 on a Vokera boiler — also shown as A07 or E07 depending on the model — indicates a problem with the… Read more →
- A01 The A01 code appears when your Vokera boiler attempts to light the burner but either fails to ignite or cannot confirm… Read more →
- A02 The A02 code on a Vokera boiler means the safety limit thermostat has triggered a protective shutdown. This thermostat… Read more →
- A03 The A03 code appears when the boiler's printed circuit board (PCB) detects a problem with the fan's tacho signal —… Read more →
- A04 The A04 code on a Vokera boiler indicates that the system water pressure has dropped below the minimum level required… Read more →
- A06 The A06 code indicates that your Vokera boiler has detected a problem with the DHW (domestic hot water) thermistor —… Read more →
- A07 The A07 code appears on Vokera boilers when the control board detects an abnormal reading from the primary flow… Read more →
- A08 The A08 fault code on Vokera boilers signals a problem with the return NTC thermistor — the sensor that monitors the… Read more →
- A09 The A09 code on a Vokera boiler signals one of two things depending on the model and generation. Most commonly, it… Read more →
- A11 The A11 code on a Vokera boiler indicates a 'false flame' condition — the boiler's flame detection system is… Read more →
- A77 The A77 code is a safety-related fault that Vokera boilers use across several model ranges, and its precise meaning can… Read more →
Mynute range (AL codes)
- AL10 The AL10 code means your Vokèra boiler attempted to light but could not confirm a flame was present. The boiler shuts… Read more →
- AL20 The AL20 code appears on Vokèra boilers when the temperature of water returning from the central heating system to the… Read more →
- AL21 The AL21 code on a Vokera boiler indicates that the temperature of water returning from the central heating system to… Read more →
- AL26 The AL26 fault code on a Vokera boiler means the boiler has detected that the water returning from the heating circuit… Read more →
- AL28 The AL28 fault code signals that your Vokera boiler has detected an inverted temperature differential — in other words,… Read more →
- AL34 AL34 is a lockout fault on Vokera boilers, particularly the Mynute VHE series, indicating that the control board is not… Read more →
- AL40 The AL40 code appears on Vokèra Mynute boilers when the system water pressure has fallen below the minimum safe… Read more →
- AL41 The AL41 code (also shown simply as A41 on many Vokera displays — both refer to the same fault) is a transitional… Read more →
- AL52 AL52 is a 'final' lockout alarm on Vokera boilers, meaning the boiler has detected an internal fault it cannot assign… Read more →
- AL55 The AL55 code indicates that the boiler's control board has detected a problem with the configuration jumper tag — a… Read more →
- AL60 The AL60 code on a Vokèra boiler indicates a jumper tag fault. A jumper tag (also known as a configuration link) is a… Read more →
- AL71 The AL71 code appears on Vokera boilers when the control board detects a problem with the primary flow thermistor — the… Read more →
- AL73 The AL73 code on a Vokera boiler signals that the boiler's control board has detected a problem with the return… Read more →
- AL74 AL74 is a final lockout alarm on Vokera Mynute boilers (including the Mynute VHE) indicating that the boiler's control… Read more →
- AL79 AL79 is a safety lockout fault on Vokera boilers. It activates when the boiler's internal monitoring detects that… Read more →
Evolve range (E codes)
- E010 The E010 fault code causes your Vokera boiler to lock out as a safety measure. It most commonly points to a water… Read more →
- E011 The E011 code means your Vokera boiler has detected flame activity at a point in its operating cycle when no flame… Read more →
- E020 The E020 code means your Vokera boiler has triggered its limit thermostat as a safety response to overheating. When the… Read more →
- E030 The E030 code means your Vokera boiler has detected a problem with its flue fan and shut itself down as a safety… Read more →
- E040 The E040 code on a Vokera boiler indicates a water transducer fault — meaning the boiler's built-in pressure sensor has… Read more →
- E041 The E041 code appears on Vokera boilers when the built-in pressure sensor (water transducer) detects that system… Read more →
- E042 The E042 code appears when the boiler's control system detects a flame signal at a time when the burner should not be… Read more →
- E058 The E058 code appears when your Vokèra boiler's control board detects a problem with the incoming electrical supply —… Read more →
- E060 The E060 code appears on Vokera boilers when the control board cannot obtain a reliable temperature reading from the… Read more →
- E065 The E065 code on a Vokera boiler signals a problem with the flue thermistor — the sensor responsible for monitoring the… Read more →
- E070 The E070 fault code appears on Vokera Vision Plus series boilers and indicates a problem with the flue thermistor — the… Read more →
- E077 The E077 code on a Vokera boiler indicates that the control system has detected a fault within the main zone water… Read more →
- E080 The E080 code on a Vokèra boiler signals that the boiler's control system has detected a problem with the flue… Read more →
- E085 The E085 code appears on Vokèra boilers — most commonly the Evolve range — to signal that the appliance has detected a… Read more →
- E086 The E086 fault code on Vokèra Vision Plus series boilers signals an abnormal temperature reading linked to the flow or… Read more →
- E090 The E090 fault code appears when your Vokera boiler detects a problem related to the flue gas over-temperature probe.… Read more →
- E091 The E091 code appears on Vokera boilers — most notably the Synergy S — when the flue gas probe's internal hour counter… Read more →
- E094 The E094 code appears on Vokera Evolve boilers and indicates a flame failure — the boiler attempted to ignite and… Read more →
- E095 The E095 code appears on Vokera boilers when the boiler's internal monitoring detects abnormal combustion conditions —… Read more →