🕑 4 minutes read
Boiler codes are a language unto themselves, but they do provide a signal, in the form of a code, that suggests a specific problem has occurred within a Worcester Bosch boiler. The 1021 error code is typical with the Greenstar 8000 boiler.

If you have a Worcester Bosch Greenstar 8000 boiler and the error code 1021 pops up, we will explore the cause and take the necessary steps to rectify it.

The Causes of the 1021 Error Code

A defective hot water temperature sensor
The 1021 error code in your boiler system can be attributed to a potential malfunction with the hot water temperature sensor plug. This part is responsible for ensuring accurate temperature readings; if the plug is faulty or not connected, it will trigger this error code.

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Troubleshooting the 1021 Error Code

When faced with the 1021 error code, it can be perplexing, but resolution is achievable through a systematic troubleshooting process. Troubleshooting these issues and rectifying the fault requires the expertise of a qualified Gas Safe engineer.
Consulting A Gas Safe Engineer To Reset The Boiler
Seeking professional guidance from a Gas Safe engineer is pivotal, as they are skilled at diagnosing faults within all types of gas boilers. Due to their analytical skills, the root cause will be found and rectified. The engineer's first step is to reset the Worcester boiler. If this does not work and the error persists, the investigation is escalated through active questioning, observation, and testing to make a valid assessment. A fix will be applied if the sensor plug is disconnected or defective.

Caution: Never attempt DIY solutions regarding boiler issues within the white box. The 1021 error code in Worcester Bosch Boilers warrants professional intervention for optimal results. Attempting to address this complex issue without expert knowledge, experience or Gas Safe accreditations could lead to severe consequences and pose a huge risk to safety!

If you're experiencing the 1021 error code or any other issue in a Worcester Bosch boiler, don't hesitate to contact our helpdesk or book an appointment online, which attracts a discount! Serviceteam is Worcester Bosch accredited.

At serviceteam our Worcester Bosch accredited engineers have decades of troubleshooting experience. No central heating problem is too big or small for us to handle. Annual boiler servicing significantly contributes to maintaining a boiler's performance.

Let serviceteam continue to maintain the performance of your boiler for safety, comfort and warmth during the winter months.


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