What it means
Baxi's Platinum user guide lists E50 and shows it as E followed by 50. Assure, Duo-tec 2 GA and EcoBlue Advance boilers use a different number for this fault.
What to check, in order
- Write down the code
Baxi's Platinum user guide says E50 indicates a faulty component: make a note of it.
- Contact your installer or a Gas Safe engineer
Baxi gives no fix you can do yourself for E50.
When to call a Gas Safe engineer
Baxi's code list calls E50 a hot water (DHW) NTC sensor fault: a short circuit or open circuit.
A repair visit will usually check the sensor's reading and its wiring.
- Note the model and serial number. They're on a label on the data badge, usually under the boiler or behind the front cover.
- Write down the exact code, and what the appliance was doing when it appeared.
- Check whether it's still under warranty. If it is, the repair may cost you nothing.
Quick answers
What does the Baxi E50 fault code mean?
The sensor that measures the hot water temperature has failed or isn't connected properly. Baxi's Platinum user guide lists E50 and shows it as E followed by 50. Assure, Duo-tec 2 GA and EcoBlue Advance boilers use a different number for this fault.
Can I fix Baxi E50 myself?
Engineer only (engineer visit). Start with: write down the code; contact your installer or a Gas Safe engineer. Baxi's code list calls E50 a hot water (DHW) NTC sensor fault: a short circuit or open circuit.
Is Baxi E50 worth repairing?
Worth fixing. A temperature sensor is a routine part for an engineer to replace.
Checked against
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.