Hi. I believe my ESP on my Harman P68 is failing. My question is how do I use a multimeter to test both the probe and the plug? What should I set the Multimeter to and what should the reading be? Thanks.
Harman P68 Exhaust Sensor Probe failing
- Thread starter JTP68
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Ssyko
Minister of Fire
here is some reading might point you in the right direction
https://www.hearth.com/talk/threads/how-to-tell-if-harman-esp-probe-is-going-bad-on-accentra.103062/
https://www.hearth.com/talk/threads/how-to-tell-if-harman-esp-probe-is-going-bad-on-accentra.103062/
What are the symptoms you are having that leads you to believe that the esp is going bad? As far as cleaning esp, just look in the tunnel and make sure ash is not pile up around it. I run a 3" pellet vent brush in and out the tunnel a few times then shop vac loose ash out and it is good to go. There is no need to pull it out and clean it. They are not that precise just sensing temp of exhaust.