Medium
1068 on Worcester Bosch Greenstar 8000 F GR8700iF 35 C

Your boiler's internal sensor system is confused about the air quality or external temperature, which may hinder its efficiency or ability to run.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Outside temp. sensor or lambda probe faulty.

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Wb 47848 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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer
Search the official register →

Avoid the next call-out bill

A cover plan would handle faults like 1068: 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

All 94 fault codes on the Greenstar 8000 F GR8700iF 35 C

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

Related guides you might find useful