Viessmann Ignition Electrode 7828718 Replacement Part

The Viessmann Ignition electrode 7828718 helps the boiler ignite reliably and maintain correct flame detection for safe operation. When the electrode is worn, cracked, or carboned up, it can lead to ignition failures, flame loss, repeated lockouts, or hot water/heating cutting in and out. Replacing it with the correct electrode is a reliable fix that restores stable ignition and flame sensing and helps reduce nuisance shutdowns.

Compatibility :

• 100 WB1C: 19kW System, 26kW Combi, 26kW System, 30kW Combi, 30kW System, 35kW Combi, 35kW System
• 100 WB1HA (ErP): 19kW System, 26kW System, 30kW System, 35kW System
• 100 WB1HC: 19kW System, 26kW System, 30kW System, 35kW System
• 100 WB1KC: 26kW Combi, 30kW Combi, 35kW Combi
• 100 WBP JA: 25kW Combi, 29kW Combi
• 100-W WB1B: 26kW Combi, 26kW System, 30kW Combi, 30kW System, 35kW Combi, 35kW System
• 100-W WB1C: 30kW Combi
• 111 WB1LD: 26kW, 35kW
• 111-W B1LB: 26kW, 35kW

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 (FAQ’s)

1. What is Viessmann 7828718?
Viessmann 7828718 is an ignition electrode used to help ignite the burner and support safe start-up in compatible Viessmann boilers.

2. What does an ignition electrode do?
It creates the spark needed for ignition so the boiler can light the burner reliably during demand for heating or hot water.

3. What symptoms suggest the ignition electrode is faulty?
Ignition failure, repeated lockouts, the boiler trying to fire then stopping, delayed ignition, or intermittent hot water/heating.

4. Is this the same as a flame sensing electrode?
Some boilers use separate electrodes for ignition and flame detection, while others combine functions. Check your boiler’s parts diagram/old part to confirm the exact electrode type needed.

5. Can a dirty electrode cause lockouts?
Yes. Carbon build-up, corrosion, or wear can weaken the spark and lead to failed ignition attempts and lockouts.