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MTI Safe-T-Alert 20 Series error code Alternating red/green LED + 1 beep every 30 s

FaultLP / Propane SystemVerified against the manufacturer's manual

MALFUNCTION ALARM (20-441-P): a fault in the sensor's operation OR low battery voltage. The LED alternates red/green and the sounder gives one short beep; the signal table prints the beep as every 30 seconds. The detector operates normally down to 8 VDC and low voltage activates this alarm.

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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