Expansion Vessel Saunier Duval Isofast C 28 E1 Ref. 05236600

Saunier Duval boilers compatible with reference 05236600

Expansion vessel with reference 05236600. 22 verified compatibilities: Isofast C 28 E and Isofast C 28 E1.

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. 05236600 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 05236600. 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 expansion vessel 05236600 resolves

The expansion vessel absorbs the expansion of water when heated. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  You need to add pressure to the circuit more often than usual.

  Cause: The vessel has lost nitrogen or has an internal leak, so it can no longer absorb the expansion of the water and the system loses pressure, even if you don't see any leaks.

  Check the entire installation for water leaks (radiators, bleed valves, fittings); if you don't find any, the problem may be in the expansion vessel.

• 02

  The boiler makes a bang in the pipes when starting up or when opening a hot water tap.

  Cause: The expansion vessel no longer dampens the pressure increase that occurs when the flow starts, and the shock is transmitted through the pipes.

  First, eliminate trapped air by bleeding the radiators and ensuring that the valves are fully open.

• 03

  Water is leaking from the safety valve when the circuit water heats up.

  Cause: Without the air cushion of the expansion vessel, the expansion of the water has nowhere to go and the pressure increases until the safety valve opens.

  Note the cold pressure and after 10-15 minutes of operation: a significant increase above 3 bar indicates a problem with the expansion vessel.

• 04

  The pressure suddenly rises as soon as the heating starts, even though it seems normal when cold.

  Cause: This usually indicates that the internal diaphragm has ruptured and the vessel has stopped functioning as an air cushion.

  With the boiler cold, check the Schrader valve of the expansion vessel to see if water comes out when pressing the stem; if water comes out, the membrane is broken.

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.

Data sheet for Saunier Duval expansion vessel 05236600

Catalogue reference

05236600

Brand

Saunier Duval

Type of part

Expansion vessels

Units in stock

7 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days