Review on 🔥 US Merchant Thermocouple 104146-02 104146-01 Dayton Master Reddy Desa LP Heater 18" - Fixitshop: Reliable 90-day Replacement by Theodore Huynh

I bought this to replace the thermocouple in my Desa Reddy heater - TB101 75-125,000 variable BTU. The new thermocouple works great. The electrical connections are in a different place than the original, but you can still install it and get it working. Just make sure the connectors aren't shorted to something metallic. I believe there is a design flaw with this Reddy Heater. The thermocouple does not get hot enough to activate. I had an issue with the heater not burning (gas flowing) when the start button was released (the reason for replacing the thermocouple). I replaced the thermocouple with this one and ran into the same issue (hmm. maybe the old one still worked?). To keep the flame burning I had to partially restrict the airflow with a paper towel for about 5 seconds to raise the temperature of the thermocouple and then when I released the button it continued to burn. If you hit the heater lightly, the gas supply will be cut off. My solution was to attach a small piece of metal to the thermocouple that was in contact with the flame, which allowed the thermocouple to heat up better. This seems to have fixed the problem with my heater. I hope this helps someone with the same problem!