
Bithermic Heat Exchanger Fagor Contract CE-20E / FA-20 (Ref. ST0028026)
Heat exchanger compatible with Fagor boilers of models CA-20E N, CE-20E/1 N, FA-15/20 N, FA-20 N, FA-20E N, FA-20E2 H N, FA-20 F GLP, and FEB-20EF/1N. In the available photos, no label or legible marking is visible; it has not been possible to identify the actual manufacturer of the component or extract any technical data.
Spare parts related to Fagor Fagor FA-20
Fagor boilers compatible with reference ST0028026
Bithermal heat exchanger with reference ST0028026. Eight confirmed compatibilities with two independent sources: CE-20E/1 N and CA-20E N. Verify the printed reference on your part before purchasing.
Compatibility confirmed
| Boiler model | Family | Verification |
|---|---|---|
| Fagor CE-20E/1 N | Fagor Contract CE | Confirmed · 2 sources |
| Fagor CA-20E N | Fagor Contract CE | Confirmed · 2 sources |
| Fagor FA-20 N | Fagor FA-20 | Confirmed · 2 sources |
| Fagor FA-15/20 N | Fagor FA-20 | Confirmed · 2 sources |
| Fagor FA-20E N | Fagor FA-20 | Confirmed · 2 sources |
| Fagor FA-20E2 H N | Fagor FA-20 | Confirmed · 2 sources |
| Fagor FA-20 F LPG | Fagor FA-20 | Confirmed · 2 sources |
| Fagor FEB-20EF/1N | Fagor FEB / Ecoplus | Confirmed · 2 sources |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. ST0028026 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Locate the reference printed on the body of the bithermal heat exchanger you have installed: it should indicate ST0028026.
- Check your boiler model on the nameplate and look for it in the list of compatible models on this page.
- Compare the connections and the body with the original part before installing.
- If you have any doubts, send us a photo of the screen printing via WhatsApp and we'll confirm it for you before you purchase.
Symptoms and faults resolved by the ST0028026 bithermal heat exchanger
Bithermic heat exchanger transfers heat to heating and domestic hot water. These are the typical symptoms and what to do:
The domestic hot water comes out intermittently, alternating between hot and cold with the tap in the same position.
Cause: Limescale deposits unevenly in the bithermal heat exchanger, causing the temperature sensor to fluctuate.
First, check the pressure and flow at the tap: a very low flow produces the same effect without it being the heat exchanger.
The heating works, but the domestic hot water is barely hot.
Cause: The domestic hot water circuit passes through the same bithermal body and is the one that gets clogged with limescale first.
Check the water hardness and if a water softener is installed before replacing the part.
The pressure in the heating circuit rises or falls without explanation, and water needs to be replenished frequently.
Cause: An internal perforation of the bithermal heat exchanger connects the heating circuit with the domestic water circuit.
Close the filling valve for a few days and check if the pressure remains stable before taking any action.
A boiling or bubbling noise is heard inside the boiler when requesting domestic hot water.
Cause: The lime scale accumulated in the bithermal heat exchanger creates localized hot spots that cause the water to boil.
Check if the noise occurs only when you open the hot water tap: that points to the heat exchanger rather than other parts.
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Datasheet for the Fagor ST0028026 bithermal heat exchanger
- OEM reference
- ST0028026
- Brand
- Fagor
- Type of part
- Bithermal heat exchanger
- Units in stock
- 4 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
- The part does not have a label or legible marking in any of the available photos.
- The actual manufacturer of the component and its code are not listed.
- There is no technical data available.
- The reference ST0028026 is the one currently used by the store; it has not been verified against the physical part.











