problem with CO and propane monitor tab 400 2019

Tundra57

So heard chirping coming from the CO propane monitor. No reason for it I could see. Checked battery voltage ok, fuse ok. Disconnected power then reconnected, Propane red alarm led lit but no buzzer. Pushed the test button, still no buzzer. Removed power and pulled out the unit. Bear in mind the propane is off and the tank out, the heating has been off for 3 months and the Tab door is open. Everything looked fine but the internal battery, rechargeable I think, was dead. It's manufacture date is 2017. The type of alarm I have is obsolete but the replacement type fitting the same hole is available and on order. Since the cost of a new one is less than the gas required to take to my dealer 4.5 hrs away to have him look and maybe replace it along with the loss of time, I just ordered it.

Funny thing is, turns out the chirping was the smoke alarm as the battery needed changing. It's mounted above and I was sure the beep was the CO alarm.

Just as well really. I hadn't tried the CO detector test button since I got the trailer last year. Note to self- test regularly even tho the battery power comes from the trailer.

Manufacturer says change every 7 years or less.

I wonder if there is an easy way to test the actual sensors in it.

ChanW

I once thought our CO/Propane sensor was bad after dog breath had set it off, and I had unplugged it to shut it up, and then plugged it back in after a short time.

That red light flashed and flashed. I pressed the button, etc, so I assumed the sensor had gone bad.

Turned out, I learned after reading the docs, the red light normally flashes for a minute or two (maybe five, I forget), on power up, probably while it calibrates itself or something.

Tundra57

Mine never goes off. Left it for 20 mins while I had a cup of tea.

Tundra57

@ChanW Also holding the test button to sound the buzzer in test doesn't work either.

But good info, I would not have thought to wait more than a few seconds normally but a cup of tea called me. ,:-)

Tabfortwo

I took mine out and now use a battery operated one. 

Tundra57

So I got the new replacement. Fitted and all ok now. Replacement cost $90. It's got a 7 year life and a 2 year warranty. See if it last longer than the last one. :-)