AboutJ Cook Expertise With 25+ years experience, I am familiar with residential, commercial, and industrial HVAC equipment including but not limited to boilers, chillers, reciprocating and screw compressors. I am trained in all manners of control wiring.
Experience I currently have three HVAC licenses and Refrigeration license by the State of North Carolina. I have been in this field for over twenty years. I have been a service technician for a contractor and also worked at a state college in the repair and maintenance of steam lines and equipment. I am currently the Building Maintenance Superintendent for a municipality.
Question hello: I have a Rudd 90 Plus, the furnace is doing 2 different things:
flame shuts down but the fan/blower is still going, blows cold air.
the flame and fan/blower shut down, the furnace is still running but will not restart itself. any help/advice you could give me would be great.
Thank you
Cindy'
Answer The fan is controlled by a fail safe control to keep the fan on to prevent the heat exchanger from damage. There is either a failed safety control, or one that is working as designed and there is a system problem. The unit will have to be tested on site to determine what is shutting the burn cycle down. Thanks J
