Vaillant 103430 Heat Exchanger NTC Sensor | Genuine Replacement Spare Part
- SKU
- EDDVAILLANTSPARES48
Our Expert's Opinion
"Delivers accurate temperature readings within the domestic hot water heat exchanger, enabling reliable boiler control and safe operation."Vaillant 103430 Heat Exchanger NTC Sensor
The Vaillant 103430 Heat Exchanger NTC Sensor is a genuine replacement component designed for use in a wide range of Vaillant condensing boiler models, including the popular ecoTEC Pro, ecoTEC Plus, and VUW series. This NTC (Negative Temperature Coefficient) sensor plays a critical role in the boiler’s heating system by continuously monitoring the temperature of the water flowing through the DHW heat exchanger. As the temperature changes, the sensor’s electrical resistance varies, providing real-time feedback to the boiler’s control board. This information allows the system to adjust burner output precisely, maintaining the desired water temperature while preventing overheating and maximising efficiency.
Crafted from durable, heat-resistant materials, the Vaillant 103430 sensor is engineered to withstand constant thermal cycling, moisture exposure, and vibration within the boiler housing. Its precise calibration and tight tolerances ensure that the boiler operates safely and efficiently, minimising fuel waste and improving overall performance. A faulty or inaccurate sensor can lead to issues such as inconsistent hot water temperatures, error codes, or system shutdowns—making this replacement part an essential fix for restoring optimal function.
Vaillant provide a 1 year warranty on all genuine spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
This is a genuine Vaillant spare part supplied directly from the manufacturer. We ensure full compatibility, reliable performance and the highest quality standards.
| MPN | 103430 |
|---|---|
| Product Code | EDDVAILLANTSPARES48 |
| Compatible With: Product Code (SKU) | ecoTEC Plus 612–637/824–937; ecoTEC Pro 24/28/30 |
| Part Origin | Genuine |
| Part or Accessory? | Part |
| Brand | Vaillant |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
Vaillant 103430 Heat Exchanger NTC Sensor
The Vaillant 103430 Heat Exchanger NTC Sensor is a genuine replacement component designed for use in a wide range of Vaillant condensing boiler models, including the popular ecoTEC Pro, ecoTEC Plus, and VUW series. This NTC (Negative Temperature Coefficient) sensor plays a critical role in the boiler’s heating system by continuously monitoring the temperature of the water flowing through the DHW heat exchanger. As the temperature changes, the sensor’s electrical resistance varies, providing real-time feedback to the boiler’s control board. This information allows the system to adjust burner output precisely, maintaining the desired water temperature while preventing overheating and maximising efficiency.
Crafted from durable, heat-resistant materials, the Vaillant 103430 sensor is engineered to withstand constant thermal cycling, moisture exposure, and vibration within the boiler housing. Its precise calibration and tight tolerances ensure that the boiler operates safely and efficiently, minimising fuel waste and improving overall performance. A faulty or inaccurate sensor can lead to issues such as inconsistent hot water temperatures, error codes, or system shutdowns—making this replacement part an essential fix for restoring optimal function.
Vaillant provide a 1 year warranty on all genuine spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
This is a genuine Vaillant spare part supplied directly from the manufacturer. We ensure full compatibility, reliable performance and the highest quality standards.
| MPN | 103430 |
|---|---|
| Product Code | EDDVAILLANTSPARES48 |
| Compatible With: Product Code (SKU) | ecoTEC Plus 612–637/824–937; ecoTEC Pro 24/28/30 |
| Part Origin | Genuine |
| Part or Accessory? | Part |
| Brand | Vaillant |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
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