Glowworm PCB Interface Ref. 0020027897

Chaffoteaux boilers compatible with reference 0020027897

Plate heat exchanger with reference 0020027897. 13 verified compatibilities: 12HXI and 15HXI.

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 the ref. 0020027897 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 0020027897. 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 0020027897 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 boiler does not respond to the controls or the thermostat, as if it were completely dead.

  Cause: This interface PCB manages the communication between the control and the control board; if it fails, the boiler stops responding to commands.

  Before replacing it, check that the boiler has electrical power and that the fuse on the main PCB is not blown.

• 02

  The display or the indicator lights are flickering strangely, or they remain off even though the boiler is powered.

  Cause: A fault in this interface PCB directly affects how information is displayed to the user, even though the control unit continues to operate.

  Disconnect and reconnect the interface connector to rule out a poor connection before declaring the part faulty.

• 03

  The boiler is displaying a fault code related to communication, or it does not recognize the remote control.

  Cause: If this interface does not transmit the signal well between the remote control and the main PCB, the control unit interprets that there is a communication fault.

  Check the wiring and connectors between the interface and the PCB: a loose connection gives the same fault as a damaged part.

• 04

  The buttons on the boiler do nothing when pressed, although the rest of the equipment seems to turn on normally.

  Cause: This PCB collects the pulses and translates them into commands to the control unit; if it fails, the buttons stop having any effect.

  Check if the fault also appears when using the room thermostat, if you have one: it will tell you if the problem is only with this interface or with the boiler in general.

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.

Plate heat exchanger data sheet Chaffoteaux 0020027897

Catalogue reference

0020027897

Brand

Chaffoteaux

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.

• Chaffoteaux 30SI Manual (PDF)Document © Chaffoteaux, provided as a technical reference.