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How can I fix an E125 error on my boiler?
My boiler is showing an E125 error code and has stopped working. What does this mean and how do I sort it out?
Expert Trade Answers
"Hi,
I'm assuming you have a Baxi Boiler, the E125 error code indicates a circulation problem, typically caused by low water pressure. Here are some common causes and solutions:
1. Low System Pressure: This is the most common cause. Check the pressure gauge; if it's below 1 bar, use the filling loop to increase the pressure. (Only if you feel comfortable doing so).
2. Blockages: Ensure there are no blockages in the heating circuit that could restrict water flow."
I'm assuming you have a Baxi Boiler, the E125 error code indicates a circulation problem, typically caused by low water pressure. Here are some common causes and solutions:
1. Low System Pressure: This is the most common cause. Check the pressure gauge; if it's below 1 bar, use the filling loop to increase the pressure. (Only if you feel comfortable doing so).
2. Blockages: Ensure there are no blockages in the heating circuit that could restrict water flow."
Answered on 4th Nov 2025 - Member since Oct 2025 -
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"If you look at the manufacturers manual it should diagnose the fault, if the boiler is under warranty you can call the manufacturer and they will come out free of charge
Otherwise you will need to contact your local gas engineer to diagnose
A set price and cost to fix"
Otherwise you will need to contact your local gas engineer to diagnose
A set price and cost to fix"
Answered on 9th Dec 2025 - Member since May 2018 -
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