Potterton
Potterton NTC Sensor 5142370
NTC thermistor sensor, manufacturer part 5142370, for Potterton Commercial Sirius 2 and Sirius 3 FS boilers.
£15.01
£12.51 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 SENSOR is an NTC thermistor sensor manufactured under part number 5142370 for Potterton Commercial appliances. It forms part of the temperature sensing circuit on the Sirius 2 and Sirius 3 FS boiler range, feeding temperature information back to the boiler control. It is listed as NTC SENSOR S011021 SMD.
Signs this part needs replacing
- Boiler locks out or fails to fire despite a demand for heat
- Temperature readings that are erratic or clearly inconsistent with the flow and return
- Overheating or repeated high-limit trips during normal operation
- Fault codes relating to temperature sensing or sensor open/short circuit
- Unstable domestic hot water or heating temperatures that do not respond to the thermostat
Before you order
- Confirm the appliance model against the fit list above, as the Sirius 2 and Sirius 3 FS variants share this sensor but other ranges do not
- Check the part number on the existing sensor or the boiler's parts listing before ordering
- Inspect the sensor connector and wiring plug for corrosion or heat damage, as a poor connection can mimic a failed sensor
- Check the boiler's fault history to confirm the fault is sensor-related rather than a control or circulation issue
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS110 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS50 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS70 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS90 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS110 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS50 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS70 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS90 | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
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