Harman room temp sensor

[Bigtrucker]

I have a Harman 52i that I recently pulled out for annual service. My room temp sensor that came with the stove was short, about 8ft and pulled one of the connectors off the wire when I pulled the stove out. I changed out the room temp sensor wire with the thermostat wire that came with the stove, it was in the bag with the owners manual, it's about 25ft long. I just plugged the connectors to the terminals and wired the opposite ends together. Now the stove comes on in room temp mode igniter in auto, but it doesn't ramp up and down as the room gets warmer or cooler, it just runs at a constant rate even if I lower the room temp setting.
Does anyone have any advice on what could be the problem? Is the long thermostat wire i connected not designed to operate as a the room temp sensor did?
Thank you in advance for any replies!

 

[Whitenuckler]

I have a Harman 52i that I recently pulled out for annual service. My room temp sensor that came with the stove was short, about 8ft and pulled one of the connectors off the wire when I pulled the stove out. I changed out the room temp sensor wire with the thermostat wire that came with the stove, it was in the bag with the owners manual, it's about 25ft long. I just plugged the connectors to the terminals and wired the opposite ends together. Now the stove comes on in room temp mode igniter in auto, but it doesn't ramp up and down as the room gets warmer or cooler, it just runs at a constant rate even if I lower the room temp setting.
Does anyone have any advice on what could be the problem? Is the long thermostat wire i connected not designed to operate as a the room temp sensor did?
Thank you in advance for any replies!

I'm not 100% sure I know exactly what the damage was and how you fixed it. I have a P43 and it came with a short room thermostat wire with a sensor located at the end. The sensor part is about 1 inch long and covered with heat shrink. The other end is connected to the stove using stab connectors. The sensor can be extended, but the connections must be very good. If you have used your longer wire be sure it has a sensor on the end of it. If it just wire, you would be using the original sensor. My stove did not include any extra wire or wire/sensor.

 

[Bigtrucker]

OK yes my original room temp sensor has a heat shrink end on it. Do you know what the sensor is under the heat shrink? Can I buy one and connect to the end of thermostat wire? Just trying to avoid pulling the stove out again and reconnecting original short sensor.

 

[Whitenuckler]

OK yes my original room temp sensor has a heat shrink end on it. Do you know what the sensor is under the heat shrink? Can I buy one and connect to the end of thermostat wire? Just trying to avoid pulling the stove out again and reconnecting original short sensor.

You are OK to re-connect the original sensor which I believe is a thermistor. Polarity does not really matter. You must make sure the connections are good. I would use very small wire nuts. So black to black, white to white. Then basically you will have extended the original sensor wires that had the end come off (you will not need the stab connectors anymore except for on the stove)

 

[Bigtrucker]

OK I'll give that a try. Thank you!