HAAS® Alarm 124 — LOW BATTERY
Part of: our HAAS® alarm reference · covering 60 of the most common alarms.
What it means
The CMOS / parameter backup battery on the control PCB is low. The battery holds parameters and machine settings when mains power is off.
Common causes
- Battery end of life (lithium cells last 5–10 years)
What to check first
- Don't switch the machine off until the battery is replaced — you risk losing parameters
- Schedule a service visit promptly to replace the battery and back up parameters
Prevention
Cabinet maintenance is the quiet hero. A 5-minute filter clean every fortnight prevents the vast majority of cabinet-temperature and drive-temperature alarms. Replace cabinet filters at the schedule the manual specifies, not when they look clogged — by then they're already restricting airflow.
If you’re still stuck
If you’ve worked through the checks above and the alarm hasn’t cleared — or if it cleared and came back — that’s the point to call. Persistent alarms after a reset usually mean a real component fault, and pushing through them risks turning a simple repair into a bigger one. Keith covers HAAS® breakdowns across the UK with same-day phone diagnosis.
A note on this guide. Alarm wording and numbering can vary by HAAS® machine model and software revision. The descriptions here are written in plain English to help you understand what the machine is reporting and what to check first — they’re not a substitute for the official HAAS® operator manual or for a qualified service engineer’s diagnosis. Always confirm the exact alarm message on your screen and consult your machine’s documentation before attempting any repair.