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Worcester Bosch Temperature Sensor NTC 2000mm Molex 8738203395

Worcester Bosch

Worcester Bosch Temperature Sensor NTC 2000mm Molex 8738203395

NTC temperature sensor with a 2000mm cable and Molex connector, manufactured by Worcester Bosch for Greensource air/water heat pumps.

At a glance

  • Also known as 1030111
Manufacturer part no.
8738203395
Showing prices

£32.64

£27.20 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 Worcester Bosch 8738203395 is an NTC temperature sensor supplied with a 2000mm cable and a Molex connector. It is used on Worcester Greensource air/water heat pumps to monitor temperature and feed that reading back to the appliance control. As a thermistor, its resistance changes with temperature to provide the signal the control board reads.

Signs this part needs replacing

  • Temperature readings that are inaccurate or inconsistent
  • Heat pump cycling, locking out or failing to reach the set temperature
  • Fault codes relating to a temperature sensor circuit
  • Resistance reading outside the expected range when the sensor is tested

Before you order

  • Confirm your appliance model matches one of the Greensource units listed above
  • Check the existing sensor's cable length and connector type match this part
  • Inspect the sensor wiring and plug for damage before replacing

Not sure which part?

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