MTI Safe-T-Alert 40 Series error code LED off (no light, no sound)
No power at the detector (40 series): faulty power connections, reverse polarity, bad or missing fuse, or dead battery.
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 Model 40-441A / 40-442A Propane and Methane Gas Detector User's Manual (Manual #40A96-7, 2006)MTI Industries, Inc. (Safe-T-Alert)
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