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Ideal Sensor 174865

Ideal

Ideal Sensor 174865

Ideal 174865 sensor for Ideal solar thermal and commercial appliances, monitoring temperature to keep the unit running reliably.

At a glance

  • Part type: Sensor (thermostats, thermistors and sensors)
  • Also known as 1780382
Manufacturer part no.
174865
Showing prices

£64.61

£53.84 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Ideal 174865 is a sensor used across Ideal solar thermal and commercial appliance ranges. It monitors temperature inside the unit and passes that reading to the control system, which uses it to regulate operation and keep performance steady. It sits in the thermostats, thermistors and sensors group of Ideal spare parts and is a serviceable item, replaced when its readings stop tracking the actual system temperature.

Signs this part needs replacing

  • Temperature readings that drift away from the actual system or cylinder temperature
  • The appliance cycling on and off more frequently than normal
  • Lockouts or fault codes linked to temperature sensing
  • Hot water or collector temperature that no longer matches the set point
  • Intermittent running as the sensor or its connection degrades

Before you order

  • Check the appliance model and serial number against the compatibility list before ordering.
  • Confirm the number on the existing sensor; 1780382 is also used to identify this part.
  • Inspect any seal or gasket at the sensor pocket and renew it if it is worn or hardened.

Not sure which part?

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