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A.O. Smith sensor NTC assy
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A.O. Smith sensor NTC assy 0304470(S)

€ 55.49 incl. VAT

Original spare part A.O. Smith. Type: Sensor. Application: Hot water cylinder / ADMR 115. Delivery time: approx. 3–4 weeks. Supplier code: 0304470(S).

SKU: 8750339 Categories: , Brand:

Price and stock checked on 20 October 2026.

✓ In stock — delivery usually within 3–5 working days
EU delivery from € 17.95 · Shipping & payment

Price incl. VAT. Any delivery costs are calculated in the basket — see shipping & delivery.

Does this fit my appliance?
ApplicationHot water cylinder
Series / modelADMR 115 and 6 other models
A.O. Smith number0304470(S)
Article number8750339
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
All spare parts for A.O. Smith ADMR 115 →
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A.O. Smith sensor NTC assy: original A.O. Smith spare part, type: Sensor. Application: Hot water cylinder (ADMR 115). Manufacturer number: 0304470(S); Instalpunt article number: 8750339.

According to the A.O. Smith parts lists, this part fits 7 models, including A.O. Smith ADMR 40, A.O. Smith ADMR 50 and A.O. Smith ADMR 60. The full list is under “Fits”.

In stock: order before 14:00 and it ships the same working day; delivery within the EU usually takes 3–5 working days.

Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer.

Product information: A.O. Smith sensor NTC assy 0304470(S)

BrandA.O. Smith spare parts
A.O. Smith manufacturer number0304470(S)
Instalpunt article number8750339
EAN8717449151751
Part typeSensor (All A.O. Smith sensors · sensors of all brands)
ApplicationHot water cylinder
Suitable for7 A.O. Smith models (see list)
DeliveryIn stock, delivery in 3–5 working days
Price€ 55,49 incl. VAT
OriginSupplied through the official technical wholesale channel, under A.O. Smith number 0304470(S)

Also known as: voeler, temperatuursensor, NTC-sensor.

Fits 7 A.O. Smith models

The part A.O. Smith sensor NTC assy 0304470(S) is in the official parts list of these A.O. Smith appliances. Click a model for the complete parts list and exploded view.

A.O. Smith Hot water cylinder (7)

Check the rating plate of your appliance. Not sure whether this part fits? Check with the manufacturer or your installer; with the correct manufacturer number you can order it here directly.

Position on the parts diagram

This spare part is shown as position 2 on the parts drawing. Open the drawing for the appliance and click the number to check that you have the right spare part.

For which fault is a A.O. Smith sensor replaced?

According to the fault code database, these A.O. Smith fault codes point to this type of part. Always check first that the code matches the appliance type on the rating plate.

CodeWhat is going on
045Sensor is niet (juist) aangesloten.
78ABottom sensor fault
502Sensorstoring: Sensor is niet (juist) aangesloten.
503Sensor fault: damaged wiring and/or defective sensor.
504Sensor fault: damaged wiring and/or defective sensor.
787Top sensor fault

All A.O. Smith fault codes explained

Indicative: the same code can have a different cause depending on the situation. Have work on gas, flue or burner adjustment carried out by a qualified installer.

Frequently asked questions about this item

Does the A.O. Smith sensor NTC assy 0304470(S) fit my appliance?
This part is in the parts list of 7 A.O. Smith models, including the ADMR 40, ADMR 50, ADMR 60, ADMR 80. The model type is on the rating plate of your appliance. If in doubt, ask the manufacturer or your installer.
What is the delivery time for the A.O. Smith sensor NTC assy 0304470(S)?
This item is in stock. Ordered before 14:00, it ships the same working day and usually arrives within three to five working days.
Can I return this item?
Yes, unused and in the original packaging within 14 days of receipt. Unpacked or fitted items and electronics such as PCBs cannot be returned. How to register a return is explained on returns.
What does shipping cost?
Shipping costs € 17.95 to Austria, Denmark, Italy, Spain and Sweden and € 24.95 to other EU countries. In-stock items ordered before 2 pm are dispatched the same working day; delivery usually takes 3–5 working days. Details: Shipping.
I have a fault code, which part do I need?
Look up the code in the fault code finder: per brand and appliance it shows what the code means and which part goes with it. If the code is listed with this part, the part belongs to that fault.

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