Bosch/Junkers K132 air pressure switch · 8707406048 / 8738709736
Refurbished Junkers Pressure switches Bosch

Bosch/Junkers K132 air pressure switch · 8707406048 / 8738709736

K132 differential air pressure switch for boiler draught control. The label on the photographed part shows 8707406048, with switch-on at 0,85 mbar and switch-off at 0,60 mbar. The associated spare part reference is 8738709736. It does not measure heating water pressure: before buying, compare the code, pressure setting and connections with your part.

Type of part
Pressure switches
Status
Refurbished
Catalogue reference
8738709736
Warranty
1 year
VAT included Stock · 1 unit
Compatibility

Junkers boilers compatible with reference 8738709736

Pressure switch with reference 8738709736. 18 verified compatibilities: ZW23-1AE23 and ZW23-1AE31.

Proven compatibility

Boiler modelFamilyVerification
Junkers ZW23-1AE23Junkers Euroline (ZW23 / ZW24)Contrasted
Junkers ZW23-1AE31Junkers Euroline (ZW23 / ZW24)Contrasted
Junkers ZW23 AE 31 S2805Junkers Euroline (ZW23 / ZW24)Contrasted
Junkers ZW24 AE 23 S2805Junkers Euroline (ZW23 / ZW24)Contrasted
Junkers ZW24 AE 31 S2805Junkers Euroline (ZW23 / ZW24)Contrasted
Junkers ZW24-1LH AE23Junkers Euroline (ZW23 / ZW24)Contrasted
Junkers ZS23-1AE23Junkers ZS23 (AE / Euromaxx)Contrasted
Junkers ZS23-1AE31Junkers ZS23 (AE / Euromaxx)Contrasted
Junkers ZS23 AE 23 S2805Junkers ZS23 (AE / Euromaxx)Contrasted
Junkers ZS23 AE 31 S2805Junkers ZS23 (AE / Euromaxx)Contrasted
Junkers ZW20-1AME23 S2805Junkers WT/WTD water heaters and ZW20Contrasted
Junkers ZW20-1AME31 S2805Junkers WT/WTD water heaters and ZW20Contrasted
Junkers WT11 AM1E 23 S2805Junkers WT/WTD water heaters and ZW20Contrasted
Junkers WT11 AM1E 31 S2805Junkers WT/WTD water heaters and ZW20Contrasted
Junkers WT14 AM1E 23 S2805Junkers WT/WTD water heaters and ZW20Contrasted
Junkers WT14 AM1E 31 S2805Junkers WT/WTD water heaters and ZW20Contrasted
Junkers WTD14 AM1E 23 S2805Junkers WT/WTD water heaters and ZW20Contrasted
Junkers WTD14 AM1E 31 S2805Junkers WT/WTD water heaters and ZW20Contrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if ref. 8738709736 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

  1. Find the reference printed on the installed part and check whether it matches the catalogue reference 8738709736. If it is not visible, do not identify the part from its shape alone.
  2. Check the full boiler model on its data plate and look for it in the model associations on this page.
  3. Compare the connections and physical body with the original part before installation.
  4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Diagnosis and fault codes

Symptoms that require diagnosis in the pressure switch 8738709736

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 fan runs, but ignition does not complete.

    Cause: The appliance may not be receiving the required draught signal; the pressure switch is not the only possible cause.

    Note the model and fault code so a technician can check the air circuit and its control signal.

  • 02

    The lockout occurs intermittently.

    Cause: There may be a problem with draught, connections or component operation.

    Do not adjust or bypass the pressure switch. Diagnosis requires checking the assembly according to the appliance manual.

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.

Technical data

Junkers 8738709736 pressure switch datasheet

Catalogue reference
8738709736
Uniclima internal SKU
PCNZW24
Brand
Junkers
Type of part
Pressure switches
Units in stock
1 unit
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.

Type
K132 differential pressure switch
Code visible on the label
8 707 406 048
Associated spare part reference
8738709736
Switch-on (P ein)
0,85 mbar / 85 Pa
Switch-off (P aus)
0,60 mbar / 60 Pa
Maximum pressure indicated
20 mbar
Electrical contact marking
0,1 A · 24 V DC
Before purchasing
  • Compare the reference, pressure setting and connections, not the appearance of the housing. For Neckar appliances, check the parts diagram for the exact version before choosing a replacement.
Frequently Asked Questions

Frequently asked questions about the pressure switch 8738709736

Which reference should I compare before buying?
The photographed label shows 8 707 406 048. The associated spare part reference is 8738709736. PCNZW24 is Uniclima’s internal SKU, not a manufacturer reference. Also check the full boiler version.
Will a similar pressure switch with a different setting work?
Appearance does not confirm compatibility. This part is marked with switch-on at 0,85 mbar and switch-off at 0,60 mbar. The values and connections required by the appliance must match, or the manufacturer must document the replacement.
Does it monitor the boiler water pressure?
No. It is a differential air pressure switch used for draught control. It does not replace a pressure sensor in the heating circuit.
Does an ignition lockout confirm that it needs replacing?
Do not force, hit, or bridge the component. Request a technical check according to the equipment manual before deciding on its replacement.

Spare parts related to Junkers Junkers WT/WTD water heaters and ZW20

Entrega calculada por destino Delivery time shown at checkout
1-year warranty reviewed and tested
14-day return uninstalled parts
Technical support we verify your model
Bosch/Junkers K132 air pressure switch · 8707406048 / 8738709736