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Worcester Bosch Temperature Sensor 8738203474

Worcester Bosch

Worcester Bosch Temperature Sensor 8738203474

Indoor unit temperature sensor for the Worcester WAA IU 6 heat pump, part number 8738203474.

At a glance

  • Also known as 2248419
Manufacturer part no.
8738203474
Showing prices

£45.73

£38.11 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 SENSOR INDOOR UNIT is a Worcester Bosch sensor used to measure air or water temperature within the indoor unit of the appliance. It provides the control board with the temperature feedback needed to regulate heat pump operation. This part carries the manufacturer part number 8738203474.

Signs this part needs replacing

  • The heat pump does not respond correctly to changes in room or flow temperature
  • Heating output stays constant regardless of the setpoint
  • The appliance cycles on and off more frequently than expected
  • Temperature readings at the controller appear inaccurate or unstable
  • Fault codes relating to temperature sensing appear at the controls

Before you order

  • Confirm the appliance model and that it is a Worcester WAA IU 6 heat pump
  • Check the existing sensor part number against 8738203474
  • Verify the sensor location on your indoor unit before removing the old part
  • Isolate the appliance from the power supply before fitting

Not sure which part?

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