Why does my boiler work after reset but fail again later?<\/strong>\u00a0<\/strong> A reset only clears the error temporarily. If the boiler fails again, it means the actual fault such as a sensor issue, ignition failure, or pressure problem has not been fixed.\u00a0<\/p> <\/div> <\/div>\n<\/body>","protected":false},"excerpt":{"rendered":"
If your Worcester boiler is displaying a fault code,\u00a0it\u2019s\u00a0not just an error \u2014\u00a0it\u2019s\u00a0a clear signal pointing to a specific problem within the system.\u00a0 In this guide,\u00a0you\u2019ll\u00a0find the\u00a0most reported\u00a0Worcester boiler fault codes\u00a0organised\u00a0by issue type, along with what they\u00a0actually mean\u00a0in real situations. More importantly,\u00a0you\u2019ll\u00a0learn which faults you can safely check yourself and when\u00a0it\u2019s\u00a0time to involve a qualified … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":108,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[15],"tags":[53,32,35],"class_list":["post-107","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-worcester-boiler","tag-worcester-boiler-fault-codes","tag-worcester-boiler-repair-services-in-london","tag-worcester-bosch-boiler-approved-engineers"],"yoast_head":"\nWorcester Boiler Fault Codes: Easy Troubleshooting Guide | Boiler Services London<\/title>\n<meta name=\"description\" content=\"Worcester boiler not working? 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Identify fault codes, understand causes, and fix common issues like ignition failure and low pressure quickly.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/\" \/>\n<meta property=\"og:site_name\" content=\"Boiler Services Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/instantgasandheating\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-07-27T07:36:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-27T08:01:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.boilerserviceslondon.co.uk\/blog\/wp-content\/uploads\/2024\/05\/Worcester-Boiler-Fault-.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1080\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Boiler Service Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Boiler Service Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/\"},\"author\":{\"name\":\"Boiler Service Team\",\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/d7edab690a303ca35427f1f567203263\"},\"headline\":\"Worcester Boiler Fault Codes: Easy Troubleshooting Guide\",\"datePublished\":\"2024-07-27T07:36:56+00:00\",\"dateModified\":\"2026-04-27T08:01:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/\"},\"wordCount\":1147,\"publisher\":{\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/Worcester-Boiler-Fault-.jpg?fit=1080%2C500&ssl=1\",\"keywords\":[\"Worcester boiler fault codes\",\"Worcester Boiler Repair Services in London\",\"Worcester Bosch Boiler Approved Engineers\"],\"articleSection\":[\"Worcester Boiler\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/\",\"url\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/\",\"name\":\"Worcester Boiler Fault Codes: Easy Troubleshooting Guide | Boiler Services London\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/Worcester-Boiler-Fault-.jpg?fit=1080%2C500&ssl=1\",\"datePublished\":\"2024-07-27T07:36:56+00:00\",\"dateModified\":\"2026-04-27T08:01:15+00:00\",\"description\":\"Worcester boiler not working? 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Worcester boiler showing EA 227 and not firing up?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"EA 227 means the boiler is\u00a0failing to ignite. This usually happens when gas is not reaching the burner\u00a0properly\u00a0or the ignition electrode is not working. Check that your gas supply is active and try one reset. If the boiler still does not fire, the ignition components or gas valve need inspection.\u00a0\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#faq-question-1777276511466\",\"position\":2,\"url\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#faq-question-1777276511466\",\"name\":\"What should I do if my Worcester boiler shows\u00a02951\u00a0low pressure error?\u00a0\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 2951 fault appears when system pressure drops below the safe level. You can\u00a0repressurise\u00a0the boiler using the filling loop until it reaches around 1 to 1.5\u00a0bar. If the pressure drops again within\u00a0a short time, it usually\u00a0indicates\u00a0a leak or internal\u00a0component\u00a0issue.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#faq-question-1777276525458\",\"position\":3,\"url\":\"https:\\\/\\\/www.boilerserviceslondon.co.uk\\\/blog\\\/worcester-boiler-fault-codes\\\/#faq-question-1777276525458\",\"name\":\"Why does my Worcester boiler show 9F and stop working suddenly?\u00a0\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A 9F fault means the boiler is not receiving the correct gas supply.\u00a0This can be due to low gas pressure, a faulty gas valve, or supply interruption. 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This usually happens when gas is not reaching the burner\u00a0properly\u00a0or the ignition electrode is not working. Check that your gas supply is active and try one reset. If the boiler still does not fire, the ignition components or gas valve need inspection.\u00a0","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276511466","position":2,"url":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276511466","name":"What should I do if my Worcester boiler shows\u00a02951\u00a0low pressure error?\u00a0","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The 2951 fault appears when system pressure drops below the safe level. You can\u00a0repressurise\u00a0the boiler using the filling loop until it reaches around 1 to 1.5\u00a0bar. If the pressure drops again within\u00a0a short time, it usually\u00a0indicates\u00a0a leak or internal\u00a0component\u00a0issue.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276525458","position":3,"url":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276525458","name":"Why does my Worcester boiler show 9F and stop working suddenly?\u00a0","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A 9F fault means the boiler is not receiving the correct gas supply.\u00a0This can be due to low gas pressure, a faulty gas valve, or supply interruption. Do not continue resetting the boiler, as this fault requires a qualified engineer to safely diagnose.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276536298","position":4,"url":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276536298","name":"What causes A21 fault on Worcester boiler and no heating?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The A21 fault is linked to circulation problems, meaning hot water is not moving through the system. This is commonly caused by a stuck or failed pump, airlocks, or blockages in the pipework. Bleeding radiators may help temporarily, but persistent issues require pump inspection.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276562035","position":5,"url":"https:\/\/www.boilerserviceslondon.co.uk\/blog\/worcester-boiler-fault-codes\/#faq-question-1777276562035","name":"Why does my boiler work after reset but fail again later?\u00a0","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A reset only clears the error temporarily. 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