I don't usually ask the questions here because I feel I have a pretty good knowledge of the product but.....I talked a friend into buying a Harman P43 which he has installed in his basement. With the stove running Room Temp auto set at 65 degrees the stove runs until the set temp is satisfied and shuts down. It won't, however, restart without turning the pot to OFF and then back to 65 deg. He extended the room sensing probe (on my advice) about 20 feet from the stove to get more even heat to the entire basement. The set temp is definitely being reached. No status light flash. Just Power light on. I'm going to test the temp probe with my multi meter. What is the resistance I should be looking for? Any thoughts on what it might be?