You should get 220v between M1 and orange when thermostat is calling for heat. Try this, kill power, take the black lead from the blower switch off of M2 and put it on M1. Set the blower switch to ON and try the furnace. That would change wiring to test sequencer, blower already works in ON position but now we will run the AUTO feature though the ON side of the switch. Heck go one step further and put the yellow wire from M1 on terminal M2. That will make the AUTO side of the switch the ON side now. Even better pull the T-stat wires off at the furnace, red and and white (heat circuit to tstat) that will take thermostat out of systen as well. Power back up, nothing should happen. Twist red and white tstat wires together, blower should come on after a shrt delay then heat cycle should start. If so, after about 5 minutes untwist red and white, furnace should back out of heat cycle, sequencer will click as it takes elements offline, and blower should shut off after about 2-3 minutes. If that doesn't work either the wiring isn't right or the sequencer is bad.