Thermocouple
Thermocouple, Chaffoteaux 3503500 type, T69-260/M10
M10 pilot thermocouple, replacement type for Chaffoteaux appliances using part 3503500.
At a glance
- Also known as 1700520
- Isolate the gas supply and have a Gas Safe registered engineer carry out the replacement
£31.56
£26.30 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
A gas pilot thermocouple with an M10 threaded connector, sold as the replacement type cross-referenced to Chaffoteaux's own part number 3503500. It generates a small voltage from pilot flame heat to hold the flame-failure device open, cutting gas supply if the pilot goes out.
Signs this part needs replacing
- Pilot light won't stay alight, or takes several attempts to hold in
- Appliance locks out and needs the ignition sequence repeated more often
- The flame-failure device trips as soon as the control knob is released
- Visible corrosion, discolouration or a kinked probe on the existing thermocouple
Before you order
- Match the full part number printed on the thermocouple you are removing
- Isolate the gas supply and have a Gas Safe registered engineer carry out the replacement
Compliance
| Alternative numbers | 1700520 |
|---|
No fitment data held for this part.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.