Worcester Bosch Greenstar Electrode 871860028A0 Replacement Part

This Worcester Bosch Greenstar electrode 871860028A0 helps generate the spark and support safe ignition inside the combustion chamber. If the electrode is worn or damaged, you may see ignition failure, repeated firing attempts, random lockouts, or hot water/heating cutting out. Replacing it with the correct part is a reliable fix that restores stable ignition and helps reduce nuisance shutdowns.

Compatibility :

• Compact: 533, 535
• Compact ErP: 533, 535
• Greenstar CDI Compact: 28, 32, 36
• Greenstar CDI Compact LPG: 28, 32, 36
• Greenstar CDI Compact ErP: 28, 32, 36
• Greenstar CDI Compact ErP LPG: 28, 32, 36
• Greenstar i System Compact: 27, 30
• Greenstar i System Compact LPG: 27, 30
• Greenstar i System Compact ErP: 27, 30
• Greenstar i System Compact ErP LPG: 27, 30
• Greenstar RI Compact: 27, 30
• Greenstar RI Compact LPG: 27, 30
• Greenstar RI Compact ErP: 27, 30
• Greenstar RI Compact ErP LPG: 27, 30
• Greenstar SI Compact: 25, 30
• Greenstar SI Compact NG: 30
• Greenstar SI Compact LPG: 25, 30
• Greenstar SI Compact ErP: 25, 30
• Greenstar SI Compact ErP LPG: 25, 30

Important fitting advice

We recommend that all parts are fitted by a fully qualified Gas Safe registered engineer. If you need help confirming the right part, contact us our team has 10+ years of boiler spares knowledge and friendly chat support to help you quickly.

Delivery

At Boiler Spares Hub, we dispatch orders within 1 working day (Monday-Friday). Orders placed outside working days will be dispatched on the next working day. For delivery options available for this product, please add it to your basket or check our delivery options page.

Returns

We accept 30-day returns. Returns must be in an unopened, sealed box. If we find the item has been used or installation was attempted, we may refuse the return.

Frequently Asked Questions (FAQs)

1. What is Worcester Bosch 871860028A0?
An ignition/flame electrode used in Worcester Bosch Greenstar Compact boilers to help spark ignition and support stable burner operation.

2. What does an electrode do in a boiler?
It provides the ignition spark and/or senses the flame, helping the boiler light safely and keep running without lockouts.

3. What symptoms show a faulty electrode?
Ignition failure, repeated firing attempts, intermittent lockouts, delayed ignition, or hot water/heating cutting out.

4. Is 871860028A0 compatible with my boiler?
Match the part number and confirm your boiler range/model using the compatability list (Greenstar Compact variants) before ordering.

5. Can I fit this part myself?
Ignition components are safety-critical fitting and checks should be done by a qualified Gas Safe engineer.