View Full Version : Testo 325-1
11-26-2006, 07:51 PM
Well I fired up my testo 325-1 today and all it kept doing was going through the 60 second count down over and over. It was working fine the other day. Changed the little yellow cone filter and new battries and made sure the hoses where clear and still the same thing. Any ideas?
11-26-2006, 11:07 PM
Plug connectors on bottom may be loose. Mine does that occasionally,especially the thermocouple connector on the bottom right.
11-27-2006, 05:50 PM
Stopped by the shop this morning before my first call and picked up a re-conditioned Testo 325-m. We always carry spares for such a occasion. Talked to one of the other guys that uses the same one and he had the same thing happen 2 weeks ago. He changed out the thermocouple and all was fine. If we send it away it cost a couple of hundred. Now the parts manager orders the stuff we need and fix them our self. He said the thermocouple was around $80.
11-30-2006, 06:20 PM
Well the new thermocouple came in and I changed it out and my Testo 325-1 is back in the truck ready to go. Tested it on the first call this morning after truck inventory was over. And all is well.
11-30-2006, 06:33 PM
Kind of funny how you get used to having a combustion analyzer readily available then freak if something happens to it.
I know I get that way if mine breaks down. :D
Used to never use one & not think twice about it. :(
11-30-2006, 06:57 PM
I have a Fluke CO 210 detector with the Aspirator Kit. I keep it in the truck just in case my Testo 325-1 goes down. I have had to use it just to get a rough idea of what the CO is coming off a furnace. But I am so use to having the 325 there that when it started acting up I had to get it fixed right away. The shop carries a couple of different brands that we can use in a pinch. Till you can get the broken one repaired.
12-01-2006, 10:09 PM
well that didn't last long. My first call today was a 31 year old Paterson gas furnace. I stick my probe in the first cell of the heat exchanger and get a reading of 2 ppmCO,next cell I get 16 ppmCO, Blower comes on and the flames start jumping all over the place so I go for the 3rd cell and the CO hits over 4000 ppmCO and took my O2 sensor out of my testo. It start blinking that the O2 sensor is over loaded and needs to be replaced. Back to the shop and pick up the spare I just turned in the other day.
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