Low
E 16 on Chaffoteaux Minima HE System 30

Your boiler is receiving an incorrect signal from an optional temperature probe located outside your home, which may cause your heating to run less efficiently.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Outdoor sensor short circuit (where fitted)

Community-sourced, unverified
We could not tie this code to a specific manual. Treat it as indicative only.
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 →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like E 16: 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

E 17View →

All 34 fault codes on the Minima HE System 30

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

A 01A 03A 36A 37A 39A 40A 41E 02E 04E 05E 06E 07E 08E 11E 12E 13E 14E 15E 18E 20E 22E 23E 25E 26E 27E 29E 30E 33E 34E 35E 36E 37E 38

Related guides you might find useful

Yellow or orange flame — CO safety

Safety-critical — turn off, read this.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →