ESP probe.

[richtad]

I've recently purchased an invincible t from a friend and been going the the cleaning and testing phase.
All the motors work. I pulled the esp probe and was testing with an ohms meter and found a very low reading without applying heat, When I put a heating source on the tip, it rose.
Should I get any reading at all when it's applied or should it read open?
Also, if the board is bad, since it's discontinued, where can I get a replacement?
Many thanks,
Rich T

 

[DAKSY]

Do you know the number for the board? Woodman's ((broken link removed))
carries two different ones, but you'd hafta see if one of them is correct.
If it isn't you'll hafta ask a Harman dealer if one's still available.

 

[Bioburner]

Someone did a conversion to a regular p series board and other things making the stove up to date. They did it after I passed on a $250 Invincible

 

[Mr. Spock]

Thermocouples usually work or they do not. However to test one can use a volt meter that can measure micro-volts.

The charts available on this link below can be used to determine if the thermocouple is producing the correct voltage for a given temperature. I understand most thermocouples used in pellet stoves are of the k type.

http://reotemp.com/thermocoupleinfo/thermocouple-types.htm