Emergency
365 on Worcester Bosch Greenstar 2000 GR2301iW 25 C

Your boiler has detected an internal gas valve fault, meaning it can no longer safely manage the flow of fuel to the burner, so it has shut down to protect your home.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Solenoid valve ev1 leaking.

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Greenstar 2000 Gr2301iw 2023 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer
Search the official register →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like 365: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

364View →

All 143 fault codes on the Greenstar 2000 GR2301iW 25 C

Seeing a different code? Every code this model can display, in one place.

200201202203204208212214215224227228229229 B232 B233 V234 V235 V237 V238 V242 V244 V245 V246 –247 –249 V250 V251 V252 V253 V254 V256 V257257 –258258 V2592622632642652682692702732752812832843053063233283413423503513533543563573583603623633646048101010101310141018101910211023102510271037106810731074107510762051208529082909291029112912291329142915291629172918292029212922292329242925292629272928293029312932294029412942294329452946294729482949295029512952295329542954 B2955 B2956 O2957 V2958 V2959 B2960 B2961 V2962 V2963 B2964 B2965 B2966 B2967 B2971 B2972297329742981 V3071

Related guides you might find useful

Pilot light keeps going out

Older boilers: thermocouple, draught or gas supply.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →