Ran a call today for a customer that has a Carrier 355MAV furnace with a Evolution control stat.
Here's the situation:
Evolution control is showing a variety of errors (listed in the pics below)
I am the third tech to take a look into this
A week ago an April Aire #700 was installed and a clean/inspection was performed, cleaned burners, flame rod, condensate trap.
Ever since this furnace has been throwing codes daily
Here are the codes I saw this afternoon:
The code 33 and 34 is what I am having trouble with, not sure if they are A/C related or heat related? Can anyone tell me what those faults are?
I also checked the humidifier wiring and they have the solenoid connected to the HUM and COM terminals on the furnace control board, this appears right.
Any help is much appreciated.