I have a Carrier system: FURNACE 58UVB080; AC 24APA530, CONTROLLER SYSTXCCUIDO1-B, approximately 7 years old. New filter, impeccable condition.
I was initially told by the licensed installers that the fan runs all the time, unless the system is shutdown and as far as I know this has been the situation since installation. In the last 2 weeks I have noticed when the A/C is on the fan sometimes stops for a few minutes and then it starts again. It is easy to tell because the house becomes very quiet and I have not noticed that before. The original installer firm has inspected the system and they cannot find out what is wrong but in my opinion the system is not running properly.
I cannot figure out how to resolve this. I am no expert but I think it is the controller. I cannot keep trying different "techs" until someone figures it out. I cannot even find out a number to contact Carrier. Does someone have any hints what could be wrong, please?
Best Answer
In the manual of the Carrier Weathermaker 8000, even if the fan is switched to ON, it will stop blowing for about 30s when there is a "call for heat". p.14 4a of the 58TUA manual.