Pressure switch Junkers Eurosmart ZWA 24-1 - Ref. 8716146153
The Junkers Eurosmart ZWA 24-1 pressure switch, with reference 8716146153, is a device that checks the air or water pressure in the boiler and authorizes its operation. If it fails, you will notice that the boiler does not start or gets locked even though the pressure is correct, and the reset button blinks at 4 Hz, indicating a fault in the exhaust/intake circuit. This model is compatible with boilers such as the ZWA241AM23S2800 and ZWA241A31S2800, among others. A technician must confirm through diagnosis whether it is necessary to replace the pressure switch when these symptoms occur or a malfunction is detected.
- Type of part
- Pressure switches
- Status
- Refurbished
- Catalogue reference
- 8716146153
- Warranty
- 1 year
Junkers boilers compatible with reference 8716146153
Pressure switch with reference 8716146153. Four confirmed compatibilities: ZWA241AM23S2800 and ZWA241AM31S2800.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWA241AM23S2800 | Junkers Eurosmart (ZWA 24-1) | Contrasted |
| Junkers ZWA241AM31S2800 | Junkers Eurosmart (ZWA 24-1) | Contrasted |
| Junkers ZWA241A23S2800 | Junkers Eurosmart (ZWA 24-1) | Contrasted |
| Junkers ZWA241A31S2800 | Junkers Eurosmart (ZWA 24-1) | 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. 8716146153 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 8716146153. 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 8716146153
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 starts the fan but does not ignite, as if it gets stuck halfway.
Cause: The differential pressure switch does not detect the minimum pressure difference between the extractor and the boiler, which prevents the gas from flowing.
Check that the two silicone tubes of the pressure switch, the inlet and return ones, are properly connected and not crossed.
- 02
It stops with a fault of air or fan just as the ignition cycle begins.
Cause: If one of the pressure taps is blocked, the pressure switch cannot measure the pressure correctly, even though the fan is working.
Check each of the two pressure connections of the pressure switch, not just the main flue duct.
- 03
The fault appears and disappears without a clear pattern; sometimes it ignites on the first try and other times it does not.
Cause: A pressure differential that is at the limit can be more sensitive to wind changes or dirt, which causes intermittent faults.
Note if the fault coincides with windy days or with a dirty fan before assuming it is the pressure switch.
- 04
It has gone into lockout just after a general cleaning of the boiler.
Cause: If the silicone tubes have been swapped when reassembling, the pressure switch will not be able to measure the pressure correctly.
Check that the pressure switch tubes are in their original position after any handling or cleaning.
Junkers fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| The reset button flashes at 4 Hz (four times per second) | Fault indicated by rapid blinking: fault in the exhaust/intake circuit; one of the documented causes is a defective air pressure switch. | The air differential pressure switch (Huba Control 8716146153) does not switch due to blocked diaphragm/ports or condensation in the tubes, and the electronics do not detect air flow; check by cleaning the venturi and tubes and measuring with a multimeter that the contact closes with the fan running. |
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 Junkers pressure switch 8716146153
- Catalogue reference
- 8716146153
- Uniclima internal SKU
- PCEZWA241
- Brand
- Junkers
- 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.
- part code
- 605.99482
- pressure differential
- 1.50/1.20mbar
- material/batch code
- VBHEHD
Frequently asked questions about the pressure switch 8716146153
Is this pressure switch suitable for a Junkers Eurosmart ZWA 241 AM 23?
What is the pressure differential of this Junkers ZWA 24-1 pressure switch?
What batch code is printed on this pressure switch of the ZWA 24-1?
