Why does my ESP FIREbeam go into fault every time the panel is reset?

Direct answer

ESP FIREbeam Xtra and ESP FIREbeam lose power on a panel reset when the panel configuration is wrong. Extract the panel configuration, make sure the beam’s output is powered in its normal state (on panels whose outputs are de-energised when quiescent, this means inverting it), set the output current to 22 mA, and place the beam in a dedicated output group with no cause-and-effect conditions other than the panel reset, configured so the output changes state for at least five seconds on reset. Save and upload the configuration, confirm the beam powers up and clears any fault, then continue with pairing (if required), pre-alignment, alignment and commissioning.

Applies to

• Products / Models: ESP FIREbeam Xtra and ESP FIREbeam (loop-powered reflective beam smoke detectors with an integral ESP control module). Not applicable to the CDX FIREbeam Conex, which is a conventional, app-configured device.
• Firmware / Version: Not applicable
• Region: UK / Europe
• Standards: BS EN 54-12 (optical beam line smoke detectors). Configuration changes are a system modification under BS 5839-1.

This article explains how to reset and configure an ESP FIREbeam after maintenance or testing so the beam remains powered and can be commissioned correctly.

Symptoms

• The fire beam goes into fault every time the panel is reset.
• The beam does not power up or clear its fault after a reset without further manual intervention.

Likely causes

• The output that supplies the beam does not change state for at least five seconds on a panel reset, so the beam is never actually reset.
• The beam shares an output group with cause-and-effect conditions unrelated to the panel reset, so its behaviour on reset is not controlled by design.

Before you change the configuration

Changing a panel configuration file is a modification to the fire detection and fire alarm system. BS 5839-1 recommends that responsibility for a modification rests with someone competent in fire alarm system design, that the user agrees the modification in writing, and that the work is tested afterwards, including at least one device on every circuit when the control equipment has been modified, and further random testing of unrelated parts of the system when software has been changed. A modification certificate should be issued on completion. Record the change and the tests in the system logbook. After the change, keep a copy of the updated configuration, including the cause and effect logic, with the system documentation, and update the as-fitted records so that the next person to work on the system can see the current configuration.

Preparation

• Confirm that the modification has been agreed in writing (see “Before you change the configuration” above).
• Access the full installation or commissioning instructions for the fire beam if required by requesting the installation manual from Product Support.
• Ensure you can extract the panel configuration (configuration must be pulled out of the panel; it cannot be changed from the front of the panel).
• The beam’s installation manual places two requirements on the panel output that supplies the beam: the output current must be set to 22 mA, and the output must be powered in its normal (quiescent) state and change state for at least five seconds on a panel reset. How you achieve this differs between panels. On panels whose outputs are de-energised when quiescent, you invert the output, and putting the beam in its own output group is how you keep unrelated cause-and-effect from driving it. The names of the settings, and the tool used to edit the configuration, differ between panels. Consult the documentation for your control panel and configuration tool. State the panel type when contacting Hochiki Europe Technical Support.

Step-by-step: Update panel configuration for the fire beam

1. Pull the configuration file out of the control panel (do not attempt this from the front of the panel).
2. Locate the device entry for the fire beam within the extracted configuration.
3. Make the following three changes for the fire beam device:
   • Make the output powered in its normal (quiescent) state, as the beam’s manual requires. On panels whose outputs are de-energised when quiescent, this is done by inverting the output.
   • Set the output current to 22 mA.
   • Create a dedicated output group and place the fire beam into it. The group must contain no cause-and-effect conditions other than the panel reset, so that no unrelated event drives the beam output. Configure the reset so that the beam output changes state for a minimum of five seconds, as required by the FIREbeam installation manual.
   • Purpose: a shorter interruption does not reset the beam reliably and can leave it in fault; grouping the beam on its own is what makes a controlled five-second change possible without affecting other outputs.
4. Save the updated configuration.
5. Send the saved configuration back into the panel (write/upload the configuration to the panel).
6. Confirm the beam powers up and clears any fault condition.
7. Proceed with pairing (if required), pre-alignment and alignment, then continue with commissioning the fire beam per the beam’s commissioning procedure.

If the control module has been replaced

If the beam’s control module has been replaced, set its analogue address with a TCH-B200 hand-held programmer and a PL-3 programming lead, connected to the blue programming socket on the control module (Note:this must be done while the beam is not connected to loop power). Both are ordered separately. For the programmer and lead, see Which programmer and lead do I need to address Hochiki ESP devices? (TCH-B200 and PL-2 / PL-3).

Troubleshooting tips

• If the beam goes into fault every time the panel is reset, verify:
  • The beam is in its own output group (not the default output group).
  • The output is powered in its normal (quiescent) state (inverted, on panels whose outputs are de-energised when quiescent).
  • The output current is set to 22 mA.
  • The reset drives the beam output for at least five seconds.
• If changes do not take effect, confirm the updated configuration file was saved and successfully written back into the panel.

When to contact technical support

Contact Hochiki Europe Technical Support, or request the installation manual for your specific fire beam model from Product Support, if you need the exact configuration values for your system or if the beam continues to lose power after applying these changes.

Safety note

This article is general guidance for Hochiki Europe products. Design, installation, commissioning, maintenance and modification of fire detection and alarm systems should be carried out by, or under the responsibility of, a competent person in accordance with the applicable standards (for example BS 5839-1 in the UK). Statutory requirements imposed by the relevant enforcing authority also apply. Always refer to the current product manual and data sheet for the exact model before carrying out any work.

References

• ESP FIREbeam Xtra Installation Manual (Issue 1, December 2018) — Wiring Configuration, page 7
• ESP FIREbeam Installation Manual, document 2-3-0-1340 (Issue 2.0, December 2011) — section 2.4
• ESP FIREbeam Xtra Specification (Issue 7, September 2025)
• Control panel configuration tool documentation for your panel

Last reviewed: 2026-10-07 — Reviewed by: Hochiki Europe Technical Support