Iím having a strange problem with my Carrier Weathermaker 8000 58WAV furnace. Itís about fifteen years old and getting cranky. It doesnít want to start in the morning. I turn my thermostat down when I sleep so normally the furnace doesnít run at night. When I turn up the thermostat in the morning the induced draft motor runs for a few seconds and then shuts down. About a week ago when this problem first occurred the system would restart on it own, each time the induced draft motor would run a little longer until the system was up and running. Now thing are worse and sometimes I have to go through the start-up procedure to get the furnace going. Once it is running it runs fine all day long. And by the way the LED is not flashing any fault code
Since this is an intermittent problem Iím wondering if these symptoms are sufficient for a service technician to determine the cause of the problem (Itís hard to fix something that isnít broke). Iíd rather not wait until the system fails entirely and I have no heat at all, but I donít want to pay for a service call where the technician has no way of knowing what could be wrong. Do these symptoms add up to a single component? Could a service technician determine the cause?