Fault codes / Safe-T-Alert / Flashing red, continuous tone

Safe-T-Alert: Flashing red, continuous tone

What it means: Gas alarm.

What to check

Shut the cylinders, ventilate, no switches or flames. Then leak test the LP system. False alarms: hairspray, cleaners, a new carpet, low battery under about 10 V, a contaminated sensor after storage.

Tech detail

Test the gas system before you blame the detector.

Learn the system

• LP system basics
• Leak testing the LP system
• Stoves and ovens
• LP, CO and smoke alarms

Practice it on a service call

• Appliances weak when more than one is on
• LP alarm keeps going off
• Smells like propane at the stove

Guided diagnosis

• Lp Gas
• Stove / Oven

Other Safe-T-Alert codes

• Safe-T-Alert: Solid green Normal
• Safe-T-Alert: Flashing yellow Warm-up after power is applied
• Safe-T-Alert: Flashing red, beep every 30 s Alarm during a mute cycle
• Safe-T-Alert: Red and green alternating, two beeps every 15 s Malfunction
• Safe-T-Alert: Chirp with low coach voltage Low voltage
• Safe-T-Alert: Chirp, detector 5 to 7 years old End of life

Full field guide: Safe-T-Alert LP and CO detector

Codes come from the maker manuals and public service sheets. Your model's own chart always wins, and LP and 120 volt work belongs to a qualified technician.