What it means
Baxi's current code list for engineers doesn't include E119. It gives low water pressure as E118. So if the weather isn't cold, check the pressure gauge as well.
What to check, in order
- Switch the boiler off
At the control panel, then turn the electricity off at the wall.
- Find the frozen part
It's usually the most exposed part of the condensate pipe, outside.
- Warm it gently
Along its exposed length, with a hot water bottle, a microwaveable heat pack or warm water poured from a watering can.
- Power on and restart
Turn the power back on at the wall and restart the boiler. Repeat the thawing until it works again.
- Check the pressure gauge
Baxi says it should read between 1 and 2 bar, with the needle in the middle of the green area when the boiler is cold. Below 1 bar, top it up with the filling loop.
When to call a Gas Safe engineer
If the pipe isn't frozen and the pressure is fine, or the boiler won't restart after thawing, call a Gas Safe registered engineer.
Parts people end up buying
Only if the checks above point to a part. Match it to your model number first: it's on a label on the data badge, usually under the boiler or behind the front cover.
- Condensate pipe laggingSearch on Amazon
Affiliate links: as an Amazon Associate I earn from qualifying purchases, at no extra cost to you. It never changes a verdict.
Quick answers
What does the Baxi E119 fault code mean?
Baxi's help pages list E119 among the codes a boiler shows when it has shut down because its condensate pipe may be frozen. Baxi's current code list for engineers doesn't include E119. It gives low water pressure as E118. So if the weather isn't cold, check the pressure gauge as well.
Can I fix Baxi E119 myself?
Easy (about 30 minutes). Start with: switch the boiler off; find the frozen part; warm it gently. If the pipe isn't frozen and the pressure is fine, or the boiler won't restart after thawing, call a Gas Safe registered engineer.
Is Baxi E119 worth repairing?
Usually free. Thawing a frozen pipe costs nothing, and neither does topping up the pressure.
Checked against
- Baxi: what do error codes E23, E53, E133, E119 or E128 mean
- Baxi: boiler error codes (list for engineers)
- Baxi: what should my boiler pressure be set at
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.