Baxi
Baxi 5114725 Potterton & Main Red NTC Sensor
Baxi NTC sensor, part BAXI5114725, a negative temperature coefficient thermistor used to monitor temperature in Baxi heating appliances.
ConditionNew
At a glance
- Part type: NTC sensor
- Also known as 5039177659990, BAXI5114725, 264970562939, 1118068, N9381
The Hanicks code is specific to the selected condition. Manufacturer part no. and barcode are shared by every condition.
£102.70
£85.58 ex. VAT · VAT at 20%
- Delivery
- In stock. Order by 4pm Mon–Fri, 10:30am Sat for same-day despatch. Standard delivery usually takes 2-3 working days (Royal Mail Tracked 48).
- Hanicks code
- 5114725
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Baxi NTC sensor, part number BAXI5114725, is a negative temperature coefficient thermistor used to monitor temperature within Baxi heating appliances. Its resistance falls as temperature rises, giving the appliance's control board a continuous temperature signal so that firing, modulation and domestic hot water delivery can be regulated accurately. It is a service component, replaced when the sensor drifts out of tolerance or fails open or short circuit rather than as part of routine servicing.
Signs this part needs replacing
- The appliance locks out or fails to fire, often with a temperature-related fault code logged
- Domestic hot water runs hot then cold, or the delivered temperature fluctuates noticeably
- The flow or return temperature shown on the display or controls does not match the pipework temperature measured independently
- The appliance short cycles, firing and shutting down repeatedly as it misreads system temperature
- A resistance check across the sensor falls outside the expected curve for the ambient temperature at the probe
Before you order
- Check the appliance model and GC number against the manufacturer's literature to confirm this sensor is the correct fitment
- Compare the part number on the existing sensor with BAXI5114725 before removal
- Note the sensor's position and orientation so the replacement is refitted the same way
- Isolate the appliance electrically before working on the sensor circuit
Mechanical
| Part type | NTC sensor |
|---|
Compliance
| Manufacturer part number (MPN) | BAXI5114725 |
|---|---|
| Commodity code | 8533 40 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 5039177659990, BAXI5114725, 264970562939, 1118068, N9381 |
No fitment data held for this part.
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.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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