Potterton
Potterton Wiring Harness NTC Tank / External Sensor 7660975
Potterton wiring harness for the NTC tank or external sensor, used on Potterton Commercial Sirius 2 WH boilers.
£10.68
£8.90 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Potterton 7660975 wiring harness links an NTC tank sensor or external sensor to the boiler control on Potterton Commercial appliances. It carries the low-voltage sensor signal, allowing the boiler to read stored hot water or external temperature and regulate demand accordingly. The part is supplied as a wiring assembly for the Sirius 2 commercial boiler range.
Signs this part needs replacing
- Temperature readings from the tank or external sensor are missing, erratic or implausible
- The boiler reports a sensor circuit fault or locks out on an NTC-related error
- Hot water or heating temperature control becomes unstable even though the sensor itself tests correctly
- The harness shows chafing, cracking, corrosion or heat damage
- Connector pins are loose, pushed back in the housing or discoloured
Before you order
- Confirm the appliance model and that the harness currently fitted carries part number 7660975
- Establish whether the installation uses a tank NTC sensor or an external sensor, and match the harness to it
- Test the sensor resistance before ordering, so a faulty sensor is not mistaken for a wiring fault
- Isolate the appliance and prove the control is de-energised before fitting
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH110 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH50 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH60 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH70 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH90 (FROM APRIL 2016) | — | — | — |
Documents & drawings
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