Worcester Bosch · Greenstar 2000 Combi
328 boiler fault code
Greenstar 2000 Combi
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What 328 means
Brief mains voltage failure
Gas Safe registered engineer: If code 328 returns after one reset, contact a Gas Safe registered engineer.
Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
Safe check
You may reset the boiler once by pressing both arrow buttons together. If code 328 returns, contact a Gas Safe registered engineer.
Safety notice
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Source and provenance
- Worcester Bosch Greenstar 2000 Installation, Commissioning and Servicing Instructions (2023/06) · document 6721839340 · §11.2 “Fault code table”, code 328, printed p. 81
installation, commissioning and servicing instructions
2023/06 · document 6721839340