Water Pressure Switch Boiler CAPRIZ 25 And Others - Ref. 3003200038
The water pressure switch of the CAPRIZ 25 boiler and others is a device that controls the water pressure in the boiler circuit, allowing it to operate properly. If it fails, the boiler may not start or may lock out, even if the actual pressure is correct, which may indicate a problem with the system. This pressure switch is compatible with models such as the HK B124 from Heat Line / Airsol, among others. It is recommended to replace it when the fault code F0 appears, which indicates a lack of water pressure in the circuit.
VAT included
Consult via WhatsAppAirsol boilers compatible with reference 3003200038
Pressure switch with reference 3003200038. A proven compatibility: HK B124.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Airsol HK B124 | Heat Line / Airsol HK B | 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. 3003200038 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 3003200038. 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 3003200038 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 boiler locks out or shows a water pressure fault when trying to ignite.
Cause: The pressure switch does not close the start contact because it believes that the circuit pressure is insufficient.
First, check the manometer: if it is below 1 bar, fill the circuit before touching the pressure switch.
- 02
The circuit has apparently correct pressure, but the boiler still won't start.
Cause: The pressure switch may have oxidized contacts or a damaged diaphragm, and it does not accurately translate the actual pressure into an electrical signal.
With the boiler off, measure continuity at the terminals of the pressure switch before replacing it, to rule out a wiring issue.
- 03
The boiler sometimes ignites and other times it locks out for no apparent reason, without touching anything.
Cause: The internal contact of the pressure switch fails intermittently, something common in parts with years of use or slight corrosion.
Turn it on several times in a row, noting if the fault comes and goes; an irregular pattern unrelated to the actual pressure indicates a problem with the pressure switch.
- 04
The pressure switch does not close the contact even when forcing extra pressure in the circuit.
Cause: The component has lost its calibration point and no longer switches within the range for which it is designed.
Gradually increase the pressure with the filling valve while someone listens for the click of the pressure switch; if the click is not heard, confirm the fault before purchasing.
Fault codes for Airsol that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F0 | Lack of water pressure in the circuit (lockout due to low pressure). | The minimum water pressure switch (ref. 3003200038) does not close due to insufficient pressure or is faulty; check to increase to 1–1.5 bar and verify continuity/switching of the micro when pressurizing. |
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 Airsol pressure switch 3003200038
- Catalogue reference
- 3003200038
- Brand
- Airsol
- 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.
- Physical format
- Black and yellow cylindrical body, with printed text on the side.
Frequently asked questions about the pressure switch 3003200038
Is this pressure switch suitable for the COMPACT S30 boiler?
Is it a water or air pressure switch for the VIZO 28 boiler?
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