Timecodes
2:00 - Fifth Step is I: Igniter. Ohming out the hot surface igniter
4:50 - Checking if board is sending 120 volts to igniter
7:43 - Sixth Step is G: Gas Valve. Checking inlet gas pressure with a manometer
10:48 - Checking outlet gas pressure
12:04 - Adjusting gas pressure with a flat head screwdriver
14:17 - Adjusting pressure on a different kind of gas valve
19:50 - Seventh Step is F: Flame Rectification (flame sensor)
21:47 - Ensure flame sensor is receiving 80-100 volts
22:56 - Testing the flame sensor with micro amps
26:52 - Ensure Furnace has a good ground, especially on the gas manifold section
28:55 - Eight Step is B: Blower Motor
30:20 - Checking if Blower Motor is receiving power
31:14 - Recap
In this second part of the video, we'll be going over the last four steps, the IG FB: Ignition, Gas Valve, Flame Rectification and Blower Motor.
TIP BIG FB
T: Thermostat
I: Inducer Draft Motor
P: Pressure Switch
B: Board (Safeties)
I: Ignition (Hot Surface Igniter)
G: Gas Valve
F: Flame Rectification (Flame Sensor)
B: Blower Motor
Only professionals in this trade should attempt to work on live equipment.
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