Air Pressure Switch Boiler Chaffoteaux Niagara Delta 30 FF - 605.99581
Air pressure switch (differential pressure) for Chaffoteaux Niagara Delta 30 FF boilers. It compares the pressure of the combustion circuit and only allows the ignition signal to pass if the fan is extracting correctly. The replacement requires first confirming the fault of the component through technical diagnosis, even when the boiler does not start, locks out before ignition, or shows a ventilation fault. Component code 605.99581, opening/closing differential 70/50 Pa.
- Type of part
- Pressure switches
- Status
- Refurbished
- Catalogue reference
- 61307665-01
- Warranty
- 1 year
Chaffoteaux boilers compatible with reference 61307665-01
Pressure switch with reference 61307665-01. A proven compatibility: Niagara Delta 30 FF.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Chaffoteaux Niagara Delta 30 FF | Niagara Delta | 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. 61307665-01 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 61307665-01. 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 61307665-01
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 locks out before igniting and the flame does not appear.
Cause: The pressure switch measures the pressure of the combustion circuit; if it does not detect the correct difference, the control board does not allow ignition.
Check that both pressure take-off pipes are connected and free of condensed water.
- 02
The display shows a ventilation fault or lack of draft, even though the fan sounds normal.
Cause: The pressure switch confirms to the control board that there is sufficient draft; if it does not work, the warning is displayed even if the extractor is operational.
Check the exhaust terminal outside; a partial obstruction (ice, nest, dirt) may prevent reaching the necessary pressure.
- 03
The fan works, but the burner does not start.
Cause: Without the confirmation from the pressure switch, the control board cuts the cycle before opening the gas valve, even though the fan generates pressure.
With a multimeter, check if the pressure switch closes the contact with the fan running before replacing it.
- 04
The fault occurs especially on windy days or in low temperatures.
Cause: A pressure switch near the end of its useful life may not reach the necessary differential if the extractor encounters more resistance.
Check if the blockage occurs under those conditions before considering the part as faulty.
Chaffoteaux fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| 21 | Absence of extraction flow (FF). | The air pressure switch does not switch even though the extractor is activated (remains at 0) due to lack of depression/obstruction in inlets or a faulty pressure switch; verify by applying depression and measuring NO/NC continuity of the pressure switch and checking tubes/fan. |
| 22 | Flue extraction detection device fault (FF). | Short circuit in the 3-wire air pressure switch (NO/NC closing simultaneously or harness short) detected by the electronics; verify by disconnecting the 3-wire connector and measuring that NO and NC are not closed simultaneously, as well as inspecting wiring and moisture. |
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 61307665-01
- Catalogue reference
- 61307665-01
- Uniclima internal SKU
- PCND30FF
- Brand
- Chaffoteaux
- Type of part
- Pressure switches
- Units in stock
- 6 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.
- Component code
- 605.99581
- Pressure differential (open/close)
- 70/50 Pa
- Electrical characteristics of the contact
- 1(0.5) A / 250 V~
- Batch code
- ROZAJD
- Part number (batch)
- 1306946
- Batch date
- 03/03 (probably March 2003)
Frequently asked questions about the pressure switch 61307665-01
Is this pressure switch with code 605.99581 suitable for the Chaffoteaux Niagara Delta 30 FF BP and also for the N FR?
What pressure does the pressure switch of the Niagara Delta 30 FF open and close at?
What fault indicates that the pressure switch needs to be replaced on the Niagara Delta 30 FF?
