Troubleshooting and fixing fault code T2 “Fan Test”

on your Worcester Greenstar Si Compact Combi Boiler

Are you worried about your Worcester Bosch Greenstar Si Compact Combi Boiler giving you a fault code T2? This code is related to a fan test and can be difficult to diagnose and fix. But don’t worry – this blog post will provide all the information you need to understand the fault, identify any potential red flags, and provide tips for troubleshooting and fixing the fault code T2. In addition, this blog post will explain what the homeowner can do and what an engineer should do when dealing with this issue. Finally, we’ll answer some of the most asked questions about fault code T2.

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What is the Fault?

The fault code T2 on a Worcester Bosch Greenstar Si Compact Combi Boiler refers to a problem with the fan test. This fault occurs when the fan does not operate properly, which can prevent the boiler from functioning correctly. The fan test is an important component of the boiler’s startup process, as it ensures that the fan is operating at the correct speed. If the fan is not functioning properly, it may need to be repaired or replaced in order to resolve the fault code T2.

Red Flags!

When it comes to the Worcester Bosch Greenstar Si Compact Combi Boiler, fault code T2 is a common issue that homeowners face. This fault code indicates that there is an issue with the fan test, which can be caused by various factors. It’s important to recognise the red flags that indicate a T2 fault, including:

  1. The boiler repeatedly shuts off or fails to start up
  2. The display screen shows the T2 error code
  3. There are unusual noises or vibrations coming from the boiler
  4. The radiators are not heating up properly or at all
  5. The pilot light keeps going out or is not lighting at all.

 

If you notice any of these red flags, it’s important to act and troubleshoot the issue. Ignoring the issue can lead to more severe problems, including safety hazards and costly repairs.

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Troubleshooting Tips:

If you are facing fault code T2 on your Worcester Bosch Greenstar Si Compact Combi Boiler, don’t panic. There are several troubleshooting tips you can try before calling an engineer. Here are some suggestions:

  1. Check the ventilation: A blocked or insufficient ventilation system can cause this fault code to appear. Ensure that the flue and air supply pipes are not obstructed and are functioning correctly.
  2. Clean the fan: A dirty or damaged fan can lead to a T2 fault. Try cleaning it thoroughly or replacing it if required.
  3. Inspect the wiring: Faulty wiring can also trigger this error message. Check all wiring connections are secure and in good condition.
  4. Check the sensor: Sometimes a faulty sensor can give a false alarm. Inspect the sensor and replace it if it’s damaged.
  5. Reset the boiler: If none of the above steps works, you can try resetting the boiler. Follow the manufacturer’s instructions for resetting the boiler to see if that resolves the T2 fault.

 

It is worth noting that trying to fix a fault code on your own could be risky and may void the warranty. Always seek professional advice before attempting any DIY solutions.

What can you do as a Homeowner?

As a homeowner, there are a few things you can do to address the fault code T2 “Fan Test” on your Worcester Bosch Si Compact Combi Boiler before calling in an engineer. Here are five steps to take:

  1. Check for any obstructions: Ensure that there are no blockages or debris obstructing the fan or the air intake. Sometimes, leaves, dust, or other objects can accumulate and hinder the fan’s proper functioning. Clean any obstructions you find.
  2. Power cycle the boiler: Turn off the power supply to the boiler for a few minutes, and then turn it back on. This can reset the system and clear any temporary faults. Monitor the boiler and see if the fault code reoccurs.
  3. Check the electrical connections: Make sure no wires around the boiler or going into the boiler look damaged or faulty. If you notice any damaged wires, turn the power off and call for help as soon as possible. 
  4. Inspect the flue: Check the flue pipe for any blockages or restrictions. The flue removes the combustion gases from the boiler, and any blockage can affect the fan’s performance. Ensure that the flue is clear and there are no obstructions.
  5. Reset the boiler: If none of the above steps resolve the issue, you can try resetting the boiler to its factory settings. Refer to your boiler’s manual for instructions on how to perform a factory reset. This might clear any internal software glitches causing the fault code T2.

 

By following these steps, you can potentially address the fault code T2 on your Worcester Bosch Si Compact Combi Boiler and restore its proper functioning. However, if the problem persists, it is advisable to contact a qualified engineer for further assistance.

What to do as a Qualified Gas Engineer?

Here are some helpful steps you can take as a qualified gas engineer:

  1. Conduct a thorough inspection: Conduct a detailed inspection of your Worcester Bosch Greenstar Si Compact Combi Boiler to identify the root cause of the fault code T2. Check all components and connections related to the fan, such as the fan itself, wiring, and any sensors or switches involved.
  2. Perform diagnostic tests: As the engineer, you will have access to specialised diagnostic tools that can help them pinpoint the exact issue with your boiler. They can perform tests to assess the fan’s functionality, voltage readings, and check for any error codes that might not be visible on the boiler’s display.
  3. Replace faulty components: As an engineer replace any faulty parts, such as the fan or a related sensor. Ensure the new component is installed correctly and functions properly.
  4. Clean or repair the fan: Sometimes, the issue with the fan can be resolved by cleaning it thoroughly or repairing any damage. An engineer can dismantle the fan assembly, if necessary, clean it of any dirt or debris, and perform any necessary repairs to ensure proper operation.
  5. Reset the boiler: In some cases, resetting the boiler can resolve the T2 fault code. An engineer can reset the boiler using the manufacturer’s recommended procedure, clearing any temporary errors or glitches in the system.

It’s important to remember that attempting to fix the T2 fault code yourself without proper knowledge and experience can be dangerous and may void your warranty. It is always recommended to contact a qualified engineer for any repairs or maintenance on your boiler.

FAQ's

Fault code T2 indicates an issue with the fan test on your boiler. This means that the boiler is unable to perform a test to check if the fan is working correctly. The fan is an essential component in the combustion process, and if it is not functioning properly, it can lead to a loss of heating and hot water.

If your Worcester Bosch Si compact combi boiler is displaying fault code T2, you will typically see an error message or a series of flashing lights on the boiler’s display. This indicates that there is an issue with the fan test.

It is not recommended for homeowners to attempt to fix the fault code T2 on their own. This type of issue requires a professional engineer’s expertise to diagnose and repair the problem safely. Attempting to fix the issue without the proper knowledge and training can be dangerous and may cause further damage to the boiler.

The cost of repairing fault code T2 will vary depending on the specific issue and the required repairs. It is best to contact a qualified engineer to diagnose the problem and provide a quote for the repair. Keep in mind that it is essential to hire a reputable engineer with experience working on Worcester Bosch boilers.

Regular maintenance and servicing of your Worcester Bosch Si compact combi boiler can help prevent fault code T2 from occurring. It is recommended to have your boiler serviced annually by a qualified engineer to ensure all components are in proper working order and to catch any potential issues before they escalate into more significant problems. Additionally, avoiding any tampering or unauthorised repairs can also help prevent fault code T2.



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