Vaillant Turbo Tec VMW 242 2 5 12 Domestic Plate Heat Exchanger Ref. 0020073795

Vaillant boilers compatible with reference 0020073795

Plate heat exchanger with reference 0020073795. 13 verified compatibilities: VMW 242/2-3 and VMW 242/2-3 R1.

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. 0020073795 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 0020073795. 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 plate heat exchanger 0020073795 solves.

The plate heat exchanger transfers heat to the domestic hot water. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  It takes a long time to get hot water at the tap, longer than usual.

  Cause: The accumulated scale in the heat exchanger channels reduces the contact surface and slows down the heating of domestic hot water (DHW).

  Check if the problem improves after properly bleeding the system and cleaning the cold water filter.

• 02

  The expansion vessel seems to be insufficient, and it is necessary to bleed air or refill frequently.

  Cause: A damaged heat exchanger can leak mains water into the heating circuit and unbalance the pressure.

  Note the cold pressure over several days; if it only rises after using the domestic hot water, the problem may be with the heat exchanger.

• 03

  The hot water comes out in bursts, alternating between hot and lukewarm.

  Cause: A partially obstructed internal passage causes the flow of domestic hot water to be irregular as it passes through the plates.

  Open and close the tap slowly and observe if the knocking depends on the flow rate before discarding the hydraulic group.

• 04

  There is noise or vibration when you request domestic hot water, and this didn't happen before.

  Cause: The narrowing of the channels by lime forces the passage of water and generates audible turbulence.

  Check that the network filter is not dirty, as it produces the same noise with less consumption.

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 0020073795 plate heat exchanger datasheet

Catalogue reference

0020073795

Brand

Vaillant

Type of part

Plate heat exchanger

Units in stock

7 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

Manuals and technical documentation

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

• Vaillant VMW 242/2-3 R2 Manual (PDF)Document © Vaillant, provided as a technical reference.