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Ideal Sensor Assembly St4 013459

Ideal

Ideal Sensor Assembly St4 013459

Ideal 013459 St4 sensor assembly for Concord CX commercial boilers, a direct replacement temperature sensor for reliable control.

At a glance

  • Part type: Sensor assembly, St4
  • Also known as 702001, 1170494
Manufacturer part no.
013459
GC number
790-478
Showing prices

£208.73

£173.94 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 013459 is a St4 sensor assembly supplied by Ideal for use in its commercial boiler range. It forms part of the appliance's temperature sensing and control circuit, feeding readings back to the boiler controls so that firing and modulation respond correctly to demand. It is listed under the thermostats, thermistors and sensors spare part group.

Signs this part needs replacing

  • Boiler locks out or fails to fire despite a call for heat
  • Temperature readings that are erratic, stuck or clearly out of step with the flow and return
  • Fault codes relating to sensor or temperature circuit faults
  • Short cycling, where the burner fires and cuts out repeatedly over a short period
  • Overheating or inconsistent hot water and heating output on the affected appliance

Before you order

  • Confirm the appliance model and GC number against the compatibility list, as several Concord CX variants use different sensor arrangements
  • Check the existing sensor and its wiring connector against the part number 013459 before fitting
  • Note the alternative numbers 1170494 and 702001, which may appear on older documentation or labels

Not sure which part?

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