BoilerFaultCodesYour boiler has detected an electrical fault within its internal sensors or wiring that is preventing it from starting safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Short circuit
What causes this fault?
This fault occurs when the boiler's internal electrical system detects a direct connection where there shouldn't be one, effectively blowing a virtual fuse. The most common reason is a failed temperature sensor that has developed an internal fault or water damage to the wiring that has caused an electrical short.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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 EE — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Worcester Bosch WR325 RSF 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.