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Glow-worm Temperature Sensitive Element 0020038209

Glow-worm

Glow-worm Temperature Sensitive Element 0020038209

Temperature sensitive element for Glow-worm Ultrapower Sxi 100 and Sxi 170 gas boilers.

At a glance

  • Appliance family: Ultrapower Sxi
  • Also known as 1338179
Manufacturer part no.
0020038209
Showing prices

£52.27

£43.56 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The temperature sensitive element is a Glow-worm component used to monitor temperature within the appliance. It is listed for the Ultrapower Sxi range of gas boilers, where it feeds temperature information back to the boiler's control system. The part carries the manufacturer reference 0020038209.

Signs this part needs replacing

  • Boiler runs but fails to modulate, cycling on and off more than expected
  • Flow or domestic hot water temperature reads noticeably higher or lower than the setpoint
  • Repeated overheat faults or lockouts during normal operation
  • Intermittent shutdowns that clear on reset and return once the appliance warms up
  • Unstable or erratic temperature readings reported by the boiler controls

Before you order

  • Confirm your appliance is an Ultrapower Sxi 100 or Ultrapower Sxi 170
  • Check the GC number on the appliance data badge against your model
  • Compare the part number on the existing component with 0020038209
  • Isolate the appliance and follow the manufacturer's instructions before fitting

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.