Baxi Boiler Fault Codes & Repairs | Wokinghams Experts
Is your Baxi boiler showing a fault code or failing to heat your home properly? You're not alone. Baxi boilers are popular across Wokingham, Earley, Woodley, and Winnersh, and many common faults can be fixed quickly — sometimes without needing an engineer.
At Thermo-Tec Plumbing & Heating, we’ve worked on hundreds of Baxi combi and system boilers across the local area. Below is a helpful guide to the most frequent error codes, what they mean, and how to reset your Baxi boiler safely.
Most Common Baxi Boiler Fault Codes
E119 – Low Water Pressure
What it means: Your system pressure has dropped too low to operate safely.
Causes:
Recent radiator bleeding
Small system leak
Expansion vessel or pressure relief valve issue
Fix:
Check pressure gauge (should read 1.0–1.5 bar)
Use the filling loop to top up system
Reset the boiler
If pressure drops regularly, a leak or faulty part is likely — book a pressure check.
E133 – Ignition Failure
What it means: The boiler is failing to ignite or the flame has been lost.
Causes:
Frozen condensate pipe
Faulty flame sensor or gas valve
Air in the gas line
DIY Check:
Make sure your gas supply is on
Check for frozen outdoor pipes in winter
Press the reset button
Recurring E133 errors may require sensor replacement or gas valve servicing.
E160 – Fan Fault
What it means: The boiler’s fan isn’t running or isn’t being detected.
Causes:
Broken fan motor
Wiring or PCB fault
Flue blockages
What to do:
This one needs a Gas Safe engineer. A non-functioning fan can prevent safe venting of gases.
E168 – Unknown Fault
What it means: The boiler has encountered a general error it can't categorise.
Causes:
Power interruptions
Internal software fault
Multiple minor issues
Fix:
Power off boiler for 30 seconds
Turn back on and press reset
If E168 persists, it often means an underlying issue like a faulty PCB or sensor.
How to Reset a Baxi Boiler
To reset most Baxi boilers:
Locate the reset knob or button (usually marked with a circular arrow)
Press and hold for 3–5 seconds
Wait for boiler to reboot
Important: Never reset a boiler more than once without checking the cause. Continuous resets may damage internal components.
When to Call us your Local Gas Safe Engineer in Wokingham
If you're seeing recurring fault codes, unusual noises, smells, or a total system shutdown, it's time to call a qualified heating engineer.
At Thermo-Tec Plumbing & Heating, we’re Gas Safe registered and experienced with Ideal fault codes. We cover Wokingham, Lower Earley, Woosehill, and surrounding villages.
Need a Baxi Boiler Repair in Wokingham?
If your Baxi boiler is showing a fault code or refusing to fire up, we’re here to help.
Call Thermo-Tec today on 07850116944 for Ideal boiler repairs in Wokingham and surrounding areas.
FAQs – Baxi Boiler Faults
Q: Why does my Baxi boiler pressure keep dropping?
A: You may have a slow leak or an expansion vessel issue. We can diagnose this with a pressure test.
Q: Can I fix an E133 error myself?
A: You can check the condensate pipe and try a reset, but repeated ignition failures need professional attention.
Q: How long do Baxi boilers last?
A: With proper maintenance, Baxi boilers typically last 10–15 years.