Chosen Solution
I have 2. One upflow, the other downflow. Upflow works great, using it for comparison. Downflow max temp at floor vent is 70 degrees- varies a couple degrees from vent to vent). (Upflow vents are around 90 degrees) I can see blue flame at the “sight portal”. There is/was a smell similar to burnt resistor in the house. Checked furnace areas easily accessible to me for source found none. Fan runs
Hi @d544 Not sure if this information is relevant to your particular model variant (58MCA and 58MXA) but check if there is a LED fault code display on the control board or if not if there is any obvious component damage on the board at all. (see p.9-10 on the document linked). What is the full model number of the unit? Perhaps check if there is a product info label on the unit somewhere (on the back?) rather than the brand/model name on the front. Knowing the correct model number will help to find the correct spare parts if there is a faulty part that needs replacing.
