Saunier Duval Primary Bithermal Heat Exchanger ThemaClassic F24E Ref. S1003000
RefurbishedSaunier DuvalPlate heat exchanger

Saunier Duval Primary Bithermal Heat Exchanger ThemaClassic F24E Ref. S1003000

Stock · 7 units

In the Saunier Duval ThemaClassic range boilers, the ThemaClassic F24E dual-purpose primary heat exchanger is the component responsible for transferring heat from the primary circuit to the domestic hot water instantly. When this part fails, you will notice that the water comes out lukewarm or with fluctuating temperatures, as well as a decrease in the flow of hot water. This heat exchanger is compatible with the F24E and C24E models of the ThemaClassic range, as well as with the SF24E from the Thematek range and the F24E and C24E from the Combitek range. It should be replaced when the mentioned symptoms occur to ensure an adequate supply of hot water.

VAT included

Compatibility

Saunier Duval boilers compatible with reference S1003000

Plate heat exchanger with reference S1003000. Five confirmed compatibilities: F24E and C24E.

Proven compatibility

Boiler modelFamilyVerification
Saunier Duval F24EThemaClassicContrasted
Saunier Duval C24EThemaClassicContrasted
Saunier Duval SF24EThematekContrasted
Saunier Duval F24ECombitekContrasted
Saunier Duval C24ECombitekContrasted

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

Guide

How to check if the part S1003000 is the one 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 S1003000. 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 and faults that the S1003000 plate heat exchanger resolves.

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

    The hot water tap delivers cold and hot water intermittently, without being consistent.

    Cause: The copper coil becomes irregularly blocked with scale, so the heating of the water is not uniform.

    First, check the pressure of the installation and the cold water inlet filter before considering replacing the heat exchanger.

  • 02

    There are damp stains or dripping at the bottom of the boiler, in the area of the heat exchanger.

    Cause: Over the years, the copper body can be perforated due to internal corrosion.

    With the boiler under pressure, locate whether the dripping is coming from the body of the heat exchanger or from a fitting that can simply be tightened.

  • 03

    The boiler makes a bubbling noise just when starting the domestic hot water.

    Cause: It is typical of the limescale accumulated between the copper fins, which causes localized overheating.

    Note if the noise occurs only when requesting domestic hot water and not during heating; that pattern suggests the heat exchanger before replacing it.

  • 04

    One circuit heats perfectly and the other does not respond the same (heating works well, domestic hot water does not, or vice versa).

    Cause: The bivalent body distributes heat between the two circuits, and a partial obstruction first affects one of them.

    Check the operation of the 3-way valve before assuming that the heat exchanger is the source of the fault.

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

Plate heat exchanger data sheet Saunier Duval S1003000

Catalogue reference
S1003000
Brand
Saunier Duval
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
Frequently Asked Questions

Frequently asked questions about the S1003000 plate heat exchanger.

Is the part that the Saunier Duval ThemaClassic F 24 E uses a plate heat exchanger?
No, it is a double-tube heat exchanger with copper fins, not a flat plate one, according to the photo of the part.
Does this heat exchanger fit a Combitek F 24 E boiler?
Yes, the Combitek F 24 E is on the list of compatible models, along with Combitek C 24 E, Thema, and ThemaClassic in C24E/F24E format.
Is the same heat exchanger suitable for the Thema C 24 E?
Yes, the Thema C 24 E is listed as compatible with this bivalent heat exchanger, along with the other boilers from the Combitek, Thema, and ThemaClassic ranges.
Why does the heat exchanger of a ThemaClassic F 24 E fail?
It is replaced when leaks, noise from accumulated scale, or lack of domestic hot water occur.
What is the reference for the Saunier Duval bimetallic primary heat exchanger?
The reference for the primary heat exchanger is ITBTMACLF24E.

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Saunier Duval Primary Bithermal Heat Exchanger ThemaClassic F24E Ref. S1003000