eclassic 2300 reaction chember temperature issue

[jdman18]

I was cleaning my stove this evening and had my controller turn off. I was cleaning the inside and the reaction chamber. when I turned my controller back on it was showing a reaction chamber temperature of 2.51 with no fire. I looked at the thermocoupler and a I may have bumped it with my shovel when I was cleaning it. now I have done this before while I was emptying the reaction chamber and have had no issues. I started a new fire and when I got every thing going when I closed the by pass door the temperature started coming down from 2.51.  The lowest I seen it was about 1.25 after it had been running for a few minutes. one of two things have happened. First when I shut the controller of and restarted it had an issue and would not read right. I did the unplug the connector at the back of the controller and now change when I turn it back one. second something could have happed to the thermocouple while I was cleaning it. if it is the thermocouple has any one replaced the thermocoupler. I looked a little tonight in how to repair it but could not find it. if any one has replace this coupler and could you tell me how you did it. tomorrow I think I will call central boiler  and see if they have any ideas. as of right now stove is still working just burns in the high mode all the time. any help would be appreciated. thanks ryan