Low
閃 neon illuminated on Baxi Combi Instant 80/105 HE

Your boiler is receiving electrical power and is currently standing by, ready to provide heating or hot water when you turn on a tap or adjust the thermostat.

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

Power on

From this model's manual
Verified against the Baxi/Baxi Combi Instant 80 105 He Combi 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 →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like 閃 neon illuminated: 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.

All 38 fault codes on the Combi Instant 80/105 HE

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

© neon flashing1520232425262728293031323340100135154A neon flashingB neon flashingB, C, D, E & F neons flashingC neon flashingD neon flashingE neon flashingneon (flashing)neon flashing (Burner lights)neon flashing (Fan runs)neon flashing (Pump runs)neon flashing (Spark/Ignition)neon illuminated且 neon flashing布 & 皿 neons flashing布 neon flashing毛 neon flashing皿 neon illuminated血 neon illuminated閃 neon flashing

Related guides you might find useful

Boiler won't turn on — 9-step checklist

Work through these before the call-out.

Read →

No hot water but heating works

Almost always a stuck diverter valve on combis.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →