MTI Safe-T-Alert 25 Series error code Alternating red/green LED + 1 beep every 15-30 s (Gas LED off)
MALFUNCTION / SERVICE SIGNAL (25 series): an internal fault was detected - the Gas LED stays off, the Operational/CO LED alternates red/green and the alarm sounds once at an interval. The manual prints THREE different intervals for this one signal: the prose says once every 30 seconds, the signal table says BEEP EVERY 30 SECONDS, and the troubleshooting chart says beeps every 15 seconds. Treat ANY alternating red/green with a periodic single beep as this signal. The 25 manual prints no low-voltage floor; its troubleshooting first step is still to check battery voltage.
What to check, and in what order, is in the app. The flow MTI Safe-T-Alert 20/25/30/40/45/62/65/85 series - alarm and LED signal decoder walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- Safe-T-Alert 25 Series Combination Carbon Monoxide and Gas Alarm User's Manual (25RV052023, 2023)MTI Industries, Inc. (Safe-T-Alert)
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