Worcester Bosch · Greenstar i System ErP

E2 boiler fault code

Greenstar i System ErP

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What E2 means

Flow temperature sensor shorted or disconnected (cause 222/223/350/351).

Gas Safe engineer: Contact a Gas Safe registered engineer for diagnosis.

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.

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

Note the code and any three-digit cause code shown. Do not remove the casing, adjust anything or keep resetting; contact a Gas Safe registered engineer.

When to contact an engineer

Contact a Gas Safe registered engineer for diagnosis.

Source and provenance

Greenstar i System ErP Installation, commissioning & servicing instructions 6 720 806 945 (2015/07) · §8.1.2 Error codes, Table 49, printed p. 66
installation, commissioning & servicing instructions
2015/07