Fagor Air Pressure Switch CE 20E 1N Ref. MU1289600
The Fagor CE 20E boilers use the Fagor CE 20E 1N air pressure switch, which is responsible for monitoring the air or water pressure and authorizing the operation of the boiler. If this part fails, the boiler may not start or may lock out, even if the actual pressure is correct, displaying the fault code F2: Lockout due to air pressure switch. This pressure switch is compatible with models such as CE 20E 1N, CE 20E 1 GLP, and several from the FEB 20E series, among others. It is recommended to replace it when starting or locking issues occur in the boiler.
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Consult via WhatsAppFagor boilers compatible with reference MU1289600
Pressure switch with reference MU1289600. Nine confirmed compatibilities: CE 20E 1N and CE 20E 1 GLP.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Fagor CE 20E 1N | Fagor CE 20E (Contract / series CE20E) | Contrasted |
| Fagor CE 20E 1 LPG | Fagor CE 20E (Contract / series CE20E) | Contrasted |
| Fagor FEB 20E 1N | Fagor FEB 20E (Ecoplus / FEB20E series) | Contrasted |
| Fagor FEB 20E 1G | Fagor FEB 20E (Ecoplus / FEB20E series) | Contrasted |
| Fagor FEB 20E F 1N | Fagor FEB 20E (Ecoplus / FEB20E series) | Contrasted |
| Fagor FEB 20E F 1GLP | Fagor FEB 20E (Ecoplus / FEB20E series) | Contrasted |
| Fagor FEB 20E H 1N | Fagor FEB 20E (Ecoplus / FEB20E series) | Contrasted |
| Fagor FEB 20E UK 1N | Fagor FEB 20E (Ecoplus / FEB20E series) | Contrasted |
| Fagor FEB 20E UK 1PR | Fagor FEB 20E (Ecoplus / FEB20E series) | Contrasted |
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. MU1289600 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.
- Find the reference printed on the installed part and check whether it matches the catalogue reference MU1289600. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the pressure switch MU1289600 resolves.
The pressure switch controls the air or water pressure to authorize operation. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The extractor works, but the burner does not ignite.
Cause: The pressure switch does not close the contact to allow the flow of gas because it does not detect the correct air pressure.
Check that the silicone tube on the extractor is properly placed at both ends and without cracks.
- 02
The boiler locks up with the fan on, without sparking.
Cause: This occurs when the pressure switch does not validate the draft within the time that the control board expects before attempting to ignite.
Check the air intake filter or grille, if the boiler has one: a dirty intake prevents reaching the minimum pressure.
- 03
The startup fault is not constant: sometimes it ignites properly and other times it gets stuck.
Cause: A faulty contact does not switch at the same pressure point every time, so the result varies with each attempt.
Clean and check the electrical connections of the pressure switch before replacing it: a poor connection in the wiring can cause similar symptoms.
- 04
The fault occurs mainly with strong winds or bad weather.
Cause: Wind can affect the pressure that the pressure switch needs to read in order to close the contact in installations with exposed flue gas outlets.
Note if the fault coincides with windy days: if so, check the flue gas outlet and its protection before replacing the part.
Fault codes for Fagor that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F2 | Air pressure switch lockout: correct circulation/status of the pressure switch not detected at start-up. | The air pressure switch does not change state (internal defect, blocked tubes, or reversed connections), so the PCB detects a lack of draft; check continuity COM-NO with the fan running and inspect/vacuum the pressure intake and hoses. |
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.
Fagor MU1289600 pressure switch datasheet
- Catalogue reference
- MU1289600
- Brand
- Fagor
- Type of part
- Pressure switches
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- base code
- 605.99613
- switching threshold (opening/closing)
- 120/80 Pa
- electric charge
- 0.2(0.1) A / 30V~
- batch
- JIMBID
- brand and date printed on the part
- FAGOR 05/03
- part number (main reading)
- N49G003M1
- part number (alternative reading, verify)
- N496003M1
Frequently asked questions about the pressure switch MU1289600
Is this pressure switch suitable for the Fagor FEB20EH1N?
What fault does replacing the pressure switch of the Fagor CE20E1N resolve?
What electrical load does the pressure switch MU1289600 of the Fagor CE20E1N support?
