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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Having similar problem. i have orange wire to one post and

Customer Question

having similar problem. i have orange wire to one post and two yellows to second post on PO1 switch. Tried to jump the two wires, but no ignition. gas on, motor runs, hear clicking at switch and red light flashing fast indicates calling for heat.
Submitted: 1 year ago.
Category: HVAC
Expert:  Phil replied 1 year ago.

Hello, I need the brand name of the unit and its model number, approximate age and a description of its function.. is it an air conditioner, furnace, pump system? etc.

If its a furnace, heat pump or air handler,

Please attach a well focused, close up photo of the wiring diagram glued inside the service panel,you can use the paper clip icon at the right end of the toolbar at the top of this dialog box, Include a picture of the thermostat wire connections to the printed circuit board in the same area.

If there is no paper clip icon, look for the '+attach files' link at left of your send button.

We can go from there.