Thermomanometer For Atmoblock, Turboblock, Thermocompact And Turbomax Boilers

Vaillant boilers compatible with reference 101558

Pressure gauge with reference 101558. 13 verified compatibilities: VC 242 E and VCM 242 E.

Proven compatibility

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. 101558 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 101558. 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.

Symptoms and faults that the manometer 101558 resolves.

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 needle always shows the same reading, whether water is added or removed from the circuit.

  Cause: The mechanism of the pressure gauge gets internally stuck and stops moving with the actual pressure changes.

  Fill the system a bit with the filling key and check if the needle reacts before replacing the part.

• 02

  Water is leaking on the panel, right in the area where the thermometer-manometer is mounted.

  Cause: The connection of the thermometer-manometer to the circuit loses its seal with use, and water leaks through there.

  Locate the exact point of the leak with dry paper before purchasing; it may be coming from a nearby valve and not from the pressure gauge itself.

• 03

  The water temperature is not clearly visible on the dial, although the pressure can be read normally.

  Cause: The temperature indicator and the pressure indicator share a dial but are independent mechanisms, and one can fail without the other.

  Note if only the temperature needle fails or if the pressure needle does as well; this helps confirm if the entire part is needed.

• 04

  The glass of the dial is broken or very scratched, and the reading is no longer distinguishable.

  Cause: It is the most exposed part of the component, and a bump during an inspection or cleaning is usually the reason.

  Check that the break is only in the glass and that the needle continues to move as the pressure changes.

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.

Vaillant 101558 pressure gauge datasheet

Catalogue reference

101558

Brand

Vaillant

Type of part

Pressure gauges - Aquastats

Units in stock

1 unit

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.

Temperature range (dial)

0-120 °C

Pressure range (gauge)

0-4 bar

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

• Vaillant VU 242 E Manual (PDF)Document © Vaillant, provided as a technical reference.