Doing some work on our furnace, I had the opportunity to take a picture of the blower. And, thanks to this work, I now have a much better understanding of the sensors, switches, blowers, and valves, and how they all interact. So cool! I’m looking forward to spring when I get to do the same…
Old man’s fancy
In the fall an old man’s fancy lightly turns to thoughts of debugging HVAC systems. Unfortunately, not only in the fall. Now it’s the heating portion. A few Augusts ago, it was the cooling portion. The resources I found then will come in handy.
HVAC Debug Update: I’m Making Progress
Determined to debug my HVAC problems, I created a list of steps to follow. I planned to verify the presence of power and control signals at the furnace control circuit and the condenser. Not feeling comfortable about my knowledge of how my HVAC is wired, I searched and found Thermostat Wire Color Codes and a…
Hot Weather Means the AC Dies
Our HVAC stopped working in the hottest week of the summer (so far…). Rather than call an HVAC tech, I’m trying to fix it myself. Symptoms: no fans start running even though the thermostat is correctly set (and for that matter, fan set to “on”). Checks so far: Breakers Thermostat batteries Short yellow to red…