Theory and troubleshooting using short modules packed with images to make learning quick and easy.
Lessons on the sequence of operation for furnaces and other equipment. For students and working technicians learning what should happen, and in what order.
The following sequence is for the Rinnai tankless water heater. If you can learn this sequence, you will have a good understanding across the board for all brands out there as they all follow a similar sequence of operation. Step 1. Upon a call for hot water, the water flow sensor will sense water flow…
The following is an example of a 90%+ furnace. Things may differ slightly from manufacturer to manufacturer, but they’ll all be pretty close, and theory will remain the same. Furnaces equipped with a control board are continually checking to confirm rollout switches and the high-limit switch are all closed. It also sends 80V - 110V…