Question I have central HVAC manufactured by ICP model h9mpdq(or 0)75f12b1. Heat worked fine last winter, a/c fine all summer. Turn to heat and exhaust fan kicks on and the igniter glows but burners never fire up. The light on the gas valve continuously flashes (according to instructions on furnace that is correct). Just never fires up. Any thoughts?
Answer I seems as if it is going through it normal sequence. I would make sure the gas is turned on and there is pressure at the valve. You also need to make sure the valve is actually opening. Is the correct voltage being applied to the gas valve to open it? At some point is should fail on flame failure and give a flashing code for such.
I have been in the HVAC field for the past 18 years. I can help with most HVAC questions. I work on commerical buildings for the most part, and have yet to find anything I could not troubleshoot and repair, when repairable. I work on small 1 ton units to a 2500 ton chiller. Troubleshoot air flow, elect, and control problems. I attend regular classes to keep up with the latest and greatest.
I work on commerical sites, hospitals, gov't buildings. I can troubleshoot just about anything in the HVAC business.
Education/Credentials 5 years trade school, VFD training classes, Liebert factory training, some York and Trane factory training.