Saunier Duval Combitek F23E PCB Ref. 05728600

Saunier Duval boilers compatible with reference 05728600

PCB with reference 05728600. Two confirmed compatibilities: Combitek F23E and Combitek C23E.

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. 05728600 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 05728600. 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 PCB 05728600 resolves.

The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The boiler does not ignite and shows no signs of life: no lights, no display, and no noise from the fan.

  Cause: This PCB distributes power to the other components; if it fails, no current reaches anything.

  Check the fuse on the PCB and verify that 230V is reaching its input before replacing it.

• 02

  The boiler ignites but turns off by itself after a few minutes, without a clear pattern.

  Cause: An intermittent fault in the PCB (cold solder joint or component overheating) erratically cuts off the supply.

  Note if the cut coincides with the use of domestic hot water or heating: it helps to distinguish a fault in the PCB from one in the associated sensor.

• 03

  The display shows a different fault code each time, with no clear relation to what is actually happening.

  Cause: The error management of the PCB is damaged and generates incorrect readings from the sensors.

  Note the codes that appear and compare them with the manual before discarding the PCB; a repeated code usually indicates another component.

• 04

  The boiler does not respond to temperature changes from the control or the thermostat.

  Cause: The circuit that receives the command from the thermostat and activates the burner is not working.

  Check that the thermostat has batteries and that its cable is properly connected to the PCB before replacing it.

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 the Saunier Duval 05728600 PCB.

Catalogue reference

05728600

Brand

Saunier Duval

Type of part

PCBs (control boards)

Units in stock

5 units

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.

PCB silk-screened code

ST13B

Silkscreened secondary code

TP9644E / EEV9SZ1FT

Relay code

23939-A (tentative reading)

Main IC label text

CHANTIER HCTA 077C

Manuals and technical documentation

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

• Saunier Duval Combitek F23E Manual (PDF)Document © Saunier Duval, provided as a technical reference.