What are the common causes for a boiler displaying error code 125?

By: USER2158
27 Agustus 2025 Support 5 minutes
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66 views 66 comments 7 shares

Question

Grade: Education Subject: Support
What are the common causes for a boiler displaying error code 125?
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Answer (66)

Best Answer
(176)
Common causes include a blocked or obstructed flue, a faulty or malfunctioning fan, a blocked air intake, or issues with the pressure switch or sensor related to fan operation.
Answered on 27 Agustus 2025

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