BoilerFaultCodesThe 6 most common faults
Your boiler has failed to fire up or complete its safety checks after several attempts and has now locked itself out for safety.
Why it happens: This fault occurs when the boiler's control system fails to detect a flame after multiple ignition attempts, causing the unit to shut down for safety. The most common reasons are a lack of gas supply to the burner, a build-up of soot on the ignition sensors, or a failure in the electrical signals sent by the main control board.
Locate the mode selector switch on the front panel.Turn the switch to the 'OFF/RESET' position and wait for 10 seconds.Turn the switch back to either 'Hot Water Only' or 'Heating and Hot Water' to see if the boiler restarts.
Your boiler has lost communication with its external controls or is stuck in an internal testing phase, meaning it cannot start the heating cycle.
Why it happens: This fault occurs when the boiler's main control board loses the electronic signal from the external timer or room thermostat, causing a break in communication. It can also happen if the boiler becomes stuck in an internal calibration mode after a power cut or a system reset. Essentially, the 'brain' of the boiler is waiting for a command to start that it can no longer hear.
Locate the selector switch on the front panelTurn the dial to the 'OFF/RESET' position and wait for 10 secondsTurn the dial back to the 'Hot Water' or 'Heating and Hot Water' position
Your boiler has detected a temporary technical issue that frequently relates to an internal communication error or a sensor detecting an unusual reading.
Why it happens: This fault occurs when the boiler's internal computer experiences a momentary communication glitch or receives an inconsistent reading from one of the temperature sensors. It acts like a temporary digital 'hiccup' where the main control board becomes briefly confused by the data it is receiving. If the issue persists, it usually points to a failing electronic control board or a sensor that is starting to wear out.
Locate the mode selector switch on the front panelTurn the switch to the 'OFF/RESET' positionWait for 30 secondsMove the switch back to the 'ON' (winter or summer) position
Your boiler has detected an internal communication or temperature sensor error that is currently preventing it from running normally.
Why it happens: This fault occurs when the boiler's control board fails to receive a consistent signal from the internal temperature sensors. The most common reason is a malfunctioning sensor that provides an incorrect reading, though it can also be caused by a loose wiring connection or a developing fault on the main circuit board.
Turn the mode selector switch to the 'OFF/RESET' position.Wait for approximately 30 seconds.Turn the switch back to the 'ON' or heating/hot water position.
Your boiler has detected a temporary internal communication error or a sensor synchronization issue that is preventing it from running properly.
Why it happens: This fault occurs when the boiler's internal control board loses track of the temperature readings because the signals from the sensors are inconsistent or mismatched. It is often caused by a failing hot water sensor sending incorrect data or a minor electronic glitch on the main circuit board that prevents the components from communicating correctly.
Turn the selector switch to the 'OFF/RESET' position.Wait for approximately 30 seconds.Turn the selector switch back to the 'ON' position (Heating and Hot Water icon).
Your boiler has detected an internal communication error or a temporary processing fault that is preventing it from running properly.
Why it happens: This fault occurs when the boiler's internal computer experiences a software glitch or loses communication with the sensors and valves it controls. The most common reason is a momentary power fluctuation or a breakdown in the wiring connections that prevents the main control board from processing data correctly.
Locate the mode selector switch on the front panelTurn the switch to the 'OFF/RESET' position and wait for 10 secondsTurn the switch back to either 'Hot Water Only' or 'Heating and Hot Water' to see if the error clears
on the Vokera Easi-Heat I
Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.
Call a Gas Safe engineer if…
- You can smell gas or see signs of a leak
- The Vokera shows an Emergency or High severity code
- The boiler keeps locking out after repeated resets
- You've tried the DIY checks and the fault hasn't cleared
- There's visible water leaking from the boiler
- The flame is yellow or orange instead of blue
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
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