What does the Worcester Bosch Greenstar Si F36 fault code mean?
The F36 fault code indicates a problem with the ignition electrode in the Worcester Bosch Greenstar Si boiler. This typically means that the electrode is either faulty or not functioning correctly, preventing the boiler from igniting properly.
Common Causes
- Faulty Ignition Electrode: The electrode may be damaged or worn out, leading to ignition failure.
- Dirty Electrode: Accumulation of debris or carbon can hinder the electrode’s ability to spark effectively.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix ignition problems without proper training can lead to safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the ignition electrode is around £150 to £200. This includes the cost of the part and labour, as the electrode itself is relatively inexpensive, but professional installation is necessary for safety.