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Dayton40 · 14-08-2019, 18:33

I’ve got a gs-3 gas alarm on board. Every few minutes the units
display will fade out and cut the gas off.
Ideas? TIA

ranger58sb · 15-08-2019, 05:27

Is this a fume alarm?

Perhaps you actually have gas fumes? Need to solve that...

Or if it's like some CO sensors, some begin to alarm when batteries are low. And/or, some begin to alarm when the sensor has come to end of life.

Have you checked your alarm documentation? Called the company's customer servie people?

-Chris

Dayton40 · 15-08-2019, 07:37

Not CO alarm. Propane only if I understand correctly.
No alarm sounds, the display just fades out, when that happens
the solenoid kicks off the gas. I wonder if your on to something though.
Maybe the alarm is faulty, and there is gas present at the source. (Box with 2 canisters). I’ll check that. Thanks.

Dayton40 · 15-08-2019, 07:57

Turned on the unit without the canister open. Same result.
I can see the unit fade out and hear the solenoid kick off.

motretu · 15-08-2019, 10:51

the fading display suggests a 12vdc supply problem, either internal or external. does the display fade if the solenoid is not ON? if no, then using a voltmeter to check the supply voltage at the controller connection when the display fades may give a clue. if no change in supply voltage when fade happens, then suspect controller is bad internally. if supply voltage dips below 8 vdc during fade, suspect supply circuit.

hzcruiser · 15-08-2019, 19:47

Most likely a power supply issue like a bad/corroded 12V or GND contact, otherwise it's a fault in the control unit itself, not the sensor.

Start looking for a replacement I'd say. I never liked the gas alarms that also control the solenoid. My old one could control it but the solenoidit was still in the box when I bought the boat. The new one sounds an alarm and can send me an SMS when I'm off the boat.