Description
The Viessmann 200-W B2HA Ionization Electrode 7836489 is a brand-new genuine replacement component designed for selected Viessmann Vitodens 200-W B2HA boilers. Supplied under manufacturer part number 7836489, this ionization electrode comes with a 12-month warranty. Before ordering, always confirm your boiler model, output, serial number and manufacturer part number to ensure compatibility.
The ionization electrode monitors the burner flame by detecting the flame signal during operation. This safety component ensures the boiler only continues operating when a stable flame is present. A faulty ionization electrode may result in flame detection faults, ignition lockouts or intermittent boiler operation. As it forms part of the boiler’s combustion system, installation and testing should be completed by a suitably qualified Gas Safe registered engineer.
Product Details
Brand: Viessmann
Product Type: Ionization Electrode
Manufacturer Part Number: 7836489
Condition: Brand New Genuine
Warranty: 12-Months
Boiler Compatibility
The Viessmann 200-W B2HA Ionization Electrode 7836489 is compatible with the following Viessmann Vitodens 200-W B2HA system boilers.
Fits Appliance GC No.
200-W B2HA 45kW System (Serial No. 7538256)
200-W B2HA 49kW System (Serial No. 7571049)
200-W B2HA 60kW System (Serial No. 7571048)
200-W B2HA 80kW System (Serial No. 7538258)
200-W B2HA 80kW System (Serial No. 7571046)
200-W B2HA 99kW System (Serial No. 7571045)
200-W B2HA 100kW System (Serial No. 7538259)
Delivery & Collection
Collection is available from our Newcastle showroom at Unit 5, Penn Street, Newcastle upon Tyne, NE4 7BG, usually on the same day, subject to stock availability. If the item is not in stock, collection is normally available the next working day. We also offer fast UK delivery through Royal Mail First Class or DPD Next Day, with most orders arriving within one to two working days.
Boiler components should be installed by a suitably qualified Gas Safe registered engineer.
Warranty
This brand-new genuine Viessmann 200-W B2HA Ionization Electrode is supplied with a 12-month warranty. Warranty claims may be subject to inspection and confirmation that the component was correctly selected and professionally installed.
Returns
We accept returns within 30 days of delivery. The product must be unused, unfitted and returned in its original unopened packaging with all seals intact. We cannot accept returns for components that have been fitted, used, damaged or returned in an unsuitable condition. Please check the boiler model, GC number, edition, serial-number range and part number carefully before ordering.
If you need any help, our team is happy to assist. Please contact us by phone or WhatsApp chat.
Frequently Asked Questions
What does the Viessmann 7836489 ionization electrode do?
It detects the burner flame and confirms safe combustion, allowing the boiler to continue operating correctly.
Is this a genuine Viessmann part?
Yes. This is a brand-new genuine Viessmann replacement component.
Which boilers does this ionization electrode fit?
It is designed for selected Viessmann Vitodens 200-W B2HA boilers. Always confirm compatibility before ordering.
What symptoms may indicate a faulty ionization electrode?
Common symptoms include flame detection faults, ignition lockouts, intermittent burner operation or the boiler failing to stay lit. These symptoms may also be caused by other components.
Does this product include a warranty?
Yes. It comes with a 12-month warranty.
Can I install this ionization electrode myself?
No. Installation and testing should be completed by a suitably qualified Gas Safe registered engineer.












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