Refurbished Junkers Pressure gauges & aquastats

Pressure Gauge Junkers Euroline ZW23 1 AE 23 S3705 Ref. 87387036010

In the Junkers Euroline boilers, the Junkers Euroline ZW23 1 AE 23 S3705 Ref. 87387036010 pressure gauge measures and controls the circuit pressure. If it fails, you may notice incorrect readings that cause the boiler to lock due to a false lack of pressure or poor temperature regulation. This pressure gauge is compatible with models such as ZW23-1 AE, ZW24-1 E LH AE, and ZW24-2 E LH AE, among others. A technician must confirm through diagnosis whether it needs to be replaced if you observe that the needle is not indicating correctly or if the boiler is experiencing operational issues related to pressure.

Type of part: Pressure gauges & aquastats
Status: Refurbished
Catalogue reference: 87387036010
Warranty: 1 year

VAT included Stock · 3 units

Compatibility

Junkers boilers compatible with reference 87387036010

Pressure gauge with reference 87387036010. Four confirmed compatibilities: ZW23-1 AE and ZW24-1 E LH AE.

Proven compatibility

Boiler model	Family	Verification
Junkers ZW23-1 AE	Euroline	Contrasted
Junkers ZW24-1 E LH AE	Euroline	Contrasted
Junkers ZW24-2 E LH AE	Euroline	Contrasted
Junkers ZW24-2 E LH AE	Ceraclass	Contrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.

Guide

How to check if the ref. 87387036010 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 87387036010. 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.

Diagnosis and fault codes

Symptoms that require diagnosis on the manometer 87387036010

The manometer shows the pressure of the boiler circuit. These are the typical symptoms and what to do:

Common symptoms and faults

01
The pressure gauge does not reach the green zone and remains in the lower area, even though the boiler has been on for a while.
Cause: The mechanical indicator does not reflect the actual pressure of the circuit because the spring or the internal bellows have lost travel.
Bleed the circuit and fill it up to the usual level when cold. Check if the needle responds during the filling process.
02
The yellow needle is stuck at the same point regardless of what happens with the pressure.
Cause: The internal mechanism of the indicator is jammed or has residues, which prevents it from moving even when the pressure changes.
Gently tap the casing and see if the needle moves. If it does not react to bleeding or refilling, the blockage is inside the indicator.
03
I don't know if I really have pressure because the gauge gives different readings depending on the day.
Cause: A loose brass fitting or a damaged internal gasket allows air to enter the measuring chamber, affecting the reading.
Check that the brass fitting is properly tightened to the boiler and that there is no moisture or dripping around before replacing the part.
04
The boiler warns of low pressure even though the indicator seems to be within the range.
Cause: The visual reading of the indicator does not match the actual pressure of the circuit, which can lead to incorrect decisions.
Compare the reading of this indicator with another measurement point in the circuit, if available, before declaring the part defective.

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

Data sheet for the Junkers pressure gauge 87387036010

Catalogue reference: 87387036010
Uniclima internal SKU: MPEZW23AE
Brand: Junkers
Type of part: Pressure gauges & aquastats
Units in stock: 3 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.

Pressure range: 0-4 bar
Scale of the secondary indicator: 1-2-3, with a green/gray strip for the work area
Needle color: yellow
Body: black plastic head on brass fitting

Frequently Asked Questions

Frequently asked questions about the pressure gauge 87387036010

For which models is the pressure gauge Junkers Euroline ZW23 1 AE 23 S3705 Ref. 87387036010 compatible?

It is compatible with the models from the Euroline range: ZW23-1 AE, ZW24-1 E LH AE, ZW24-2 E LH AE, and with the model from the Ceraclass range: ZW24-2 E LH AE.

What scale and indicator does the head of this part have for the Ceraclass ZW24-2?

The scale is 1-2-3, with a green/gray band indicating the working area and a yellow needle.

Is it the same part for the Euroline ZW23-1 AE and the ZW23-1 KE?

Yes, both variants, AE and KE, are listed as compatible with the reference MPEZW23AE.

How many models are compatible with this reference?

A total of 4 models are compatible with the Junkers Euroline ZW23 1 AE pressure gauge.

What fault codes does this product have?

There are no documented fault codes.

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Pressure Gauge Junkers Euroline ZW23 1 AE 23 S3705 Ref. 87387036010