The blower does not always shut off after AC compressor shuts off: I have a split system A/C. The inside unit is a Rheem Criterion II (installed in 2002) and the outside is an older Comfortmaker with a recently replaced Bristol compressor. The malfunction is inconsistent in that it does not always occur but plenty often enough to drive me nuts. For example: In the past hour or so just now I’ve had to manually shut the blower off twice and it worked automatically twice. Typical scenario: Compressor shuts off after reaching thermostat set-point but the blower stays running even after the usual built in 45 second delay and will not stop until manually stopped. When this happens the compressor won't restart unless the blower has been turned off then both can come back on. In the meantime I’m recirculating increasingly warmer air. I have to manually shut off the blower at the thermostat and even then there's a delay. I did some research and ended up replacing the old thermostat with a new Honeywell RTH221B programmable one two days ago thinking that might fix it. Worked fine for about 24+ hours then back to re-occurrences of the same problem. Often when the blower has to be manually turned off I have to cycle power to the compressor at the junction box to get it to come on even though there was a delay of more than the required 5 minutes from the time the compressor shut off last. Last year I had a problem with the compressor not turning ON when the blower came on and I fixed that myself by replacing the compressor relay that was worn out. Again, this whole problem doesn’t always occur and it might run and cycle on and off like it’s supposed to for several hours in a row. It tends to have this problem more when the system has to work more. One of the fixes I’ve read about so far involves replacing the blower relay and/or the limit switch. I found the control board but have not been able to identify the relay or limit switch yet. I’m not real knowledgeable about electrical or HVAC stuff but I’ve done some little jobs around the house and I know how NOT to get shocked. I have a multimeter if there’s something I need to check (provided I can actually find it). Thanks for any input you might have. Jeff in Florida

Hi all: Last year, I hired a professional to replace my running cap. This year the cap die again. I replaced it myself. Does anyone know why the cap would die annually like that. The cap blown after first few days of summer season :mad: