BoilerFaultCodesYour boiler has detected a minor internal communication error and and is currently attempting to automatically reset itself.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Temporary fault code (Refer to section 7.10)
What causes this fault?
This fault occurs when the boiler's internal computer experiences a brief moment of confusion or data interference while talking to its own sensors. It is essentially a software 'hiccup' where the main control board loses its place for a split second and needs to recalibrate. In most cases, it is a one-off event caused by a minor electrical fluctuation or a temporary communication delay within the system.
DIY fix possible
Wait up to 10 minutes to see if the boiler clears the code automaticallyTurn the mode selector switch to the 'OFF/RESET' position and then back to 'ON'Check if the display returns to the standard temperature output
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 94 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Vokera Linea HE is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
Affiliate links — we may earn a commission at no extra cost to you.