Outside Unit Not Coming On
I have a Carrier central air unit (model 38ed048300)manufactured in 1983. It has been serviced several times over the years. When I set the thermostat switch inside my home to "cool" the furnace blower comes on and everything appears to be ok at the furnace.
The fan on the external unit does not come on at all. I checked the two cartridge fuses (50A) in the fuse box near the AC, and they checked good with an ohmeter. When I had the fuse block out, I checked the voltage at the fuse box and there was about 25v AC across each of the fuse terminals. This voltage was there even with the thermostat switch inside the house set to "Off".
I also checked the main circuit breaker box in my garage to see if any breakers were tripped but none were. I even turned each circuit breaker off and then back on. It made no difference.
When I look inside (through the vent holes) my AC unit, everything appears to look relatively new. Should I take the cover off the AC unit and look more closely inside ? Is there anything else I can check ?
I appreciate any help you can provide.