Originally Posted by kok328
Turn power on to unit.
Put your volt meter leads on L1 & L2 on the TBI in your diagram.
Now put your leads on the orange and black wires leading to the CT control transformer.
Now put your leads on the brown and read wires on the CT.
A bit confused and preparing to call ac tech but here's what I checked:
1) Pulled purple fuse partially out, just enough so that I can get my multi meter probe to make contact with the "blade" on the fuse.
Touched the red probe to one side of the fuse and got no reading: 0.
Touched the red probe to the other side of the fuse and got no reading: 0.
2) Checked for 24vac, as follows....
Power on...Meter to 200vac...The probes fit in bottom of top terminals (red and brown), where arrows were added to pic...
NO READING: 0
3) Checked for 240vac, as follows....
Power off...Slid the bottom terminals (orange and black) down slightly to expose the metal blades of the transformer.
Power on...Meter to 750vac...Placed one probe on orange and the other on black...
READING: As high as 4 (four).