ABB Error 20504 — Purge relay open

What it means · Ce que ça veut dire

Purge relay open — ABB robot hardware event on the Purge relay open (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

Status active when system not purged OK: 1. Pressure too low. 2. Pressure too high. 3. High flow on. Le texte constructeur de ce code n'existe qu'en anglais dans les manuels ABB dont il provient. Il est reproduit tel quel ci-dessus ; le manuel de votre robot fait foi.

What to check · Que vérifier

• Inspect the Purge relay open, its wiring and connections first.
• Match this code against your robot's event-log timeline before swapping parts.
• Follow the French field checks below — they are the tested sequence for this fault.
• Check other error messages for primary fault reason.
• If no other error messages, check purge unit and air supply, and search for leaks in the purge system.

Frequently asked · Questions fréquentes

What does ABB error 20504 mean?

ABB 20504 (“Purge relay open”): Purge relay open — ABB robot hardware event on the Purge relay open (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

How do you troubleshoot ABB error 20504?

Inspect the Purge relay open, its wiring and connections first. Match this code against your robot's event-log timeline before swapping parts. Follow the French field checks below — they are the tested sequence for this fault.

Related codes / Codes liés