Chaffoteaux MX2 24 FF Air Pressure Switch Ref. 605.99655
If your boiler does not start or gets blocked even though the actual pressure is correct, a technical diagnosis must confirm if you need the Chaffoteaux MX2 24 FF Air Pressure Switch Ref. 605.99655. This part checks the air pressure and authorizes the operation of the boiler. When it fails, you may experience faults such as 40-60-80, which indicates that the extractor is activated but the pressure switch does not activate, or 40-60-70, which signals that the extractor deactivates but the pressure switch does not return to its off position. It is compatible with models such as the MX2 24 FF, MX2 30 FF, and Minima MX2 24 FF, among others. A technician must confirm through diagnosis if it needs to be replaced if you notice these symptoms or faults.
- Type of part
- Pressure switches
- Status
- Refurbished
- Catalogue reference
- 6131334001
- Warranty
- 1 year
Chaffoteaux boilers compatible with reference 6131334001
Pressure switch with reference 6131334001. Five confirmed compatibilities: MX2 24 FF and MX2 30 FF.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Chaffoteaux MX2 24 FF | Chaffoteaux MX2 (24 FF) | Contrasted |
| Chaffoteaux MX2 30 FF | Chaffoteaux MX2 (24 FF) | Contrasted |
| Chaffoteaux Minima MX2 24 FF | Chaffoteaux Minima MX2 (24 FF) | Contrasted |
| Chaffoteaux Minima MX2 24 FF NG | Chaffoteaux Minima MX2 (24 FF) | Contrasted |
| Chaffoteaux Compy MX2 24 FF | Chaffoteaux Compy MX2 (24 FF) | 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. 6131334001 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 6131334001. 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 that require diagnosis in the pressure switch 6131334001
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 boiler tries to ignite, the fan starts, but stops before the flame and does not show a clear fault.
Cause: The pressure switch does not close the air contact and the control board does not allow the gas valve to open.
Check that the silicone tubes going from the fan to the pressure switch are not loose, cracked, or have condensation inside.
- 02
The boiler locks up when starting, almost before there is time for anything.
Cause: The pressure switch sends the air pressure fault signal on the first ignition attempt, and the PCB immediately cuts the cycle.
Check that the fan spins freely when powered on, without rubbing or making a forced sound, before replacing the pressure switch.
- 03
The boiler goes into cycles of turning on and off repeatedly, without functioning stably.
Cause: The pressure switch contact opens and closes intermittently, as if the air pressure oscillates between valid and invalid.
Check that the clamps on the connection pipes are properly tightened and that there is no air leak at any fitting.
- 04
The display shows a fault warning for the pressure switch or the fan.
Cause: The boiler identifies the air pressure fault as the cause of the blockage when it does not receive the expected signal from the pressure switch.
Note the exact code displayed by the boiler and compare it with the fault manual to rule out that the problem is the fan and not the pressure switch.
Chaffoteaux fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| 40-60-80 | Extractor activated but the pressure switch does not activate. | The flue pressure switch does not close when the fan starts (damaged diaphragm/contacts, blocked tubes/venturi, or insufficient ΔP). Check the continuity of the pressure switch and the depression in the venturi with the fan running; inspect tubes and wiring. |
| 40-60-70 | Extractor deactivated but the pressure switch does not return to the off position. | The pressure switch remains 'stuck' in ON with the fan stopped (contacts seized or pressure tube bypassed), causing the PCB to block the start-up. Check that the micro switch opens at rest, that there is no water/dirt in the tubes, and that it switches when a slight vacuum is applied. |
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 Chaffoteaux pressure switch 6131334001
- Catalogue reference
- 6131334001
- Uniclima internal SKU
- PCCMX224FF
- Brand
- Chaffoteaux
- Type of part
- Pressure switches
- Units in stock
- 4 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Printed code
- 605.99655
- Switching pressure
- 137/125 Pa
- Pressure differential
- 0.2(0.1)/30~
- Batch code
- QSYBAG
- Secondary number
- 1313340
- Manufacturing date
- 03/06 (March 2006)
Frequently asked questions about the pressure switch 6131334001
What fault does this air pressure switch resolve in a Chaffoteaux MX2 24 FF?
Is this pressure switch suitable for a Chaffoteaux MIRA 24 FF?
How do I check if this pressure switch is the one used in my Chaffoteaux MX2 30 FF?
