White-Rodgers 21D83M-843 Control Board for Lennox 83M00

House was struck by lightning and took out the upstairs A/C and thermostat. IM my A/C buddy and we walked through troubleshooting the unit. I figured it was the board because we had power to it and I could hear the 24vac humming. Took the logic board for the downstairs unit and put it in for the upstairs so my family would be cool sleeping at night. Went online and found the replacement for a great price. Put it in myself and it wasn't hard at all. I took pictures of everything with my iphone before I disconnected it for reference. My email regarding compatibility was answered promptly and I received the board in the same week, ordered it Sunday and arrived Friday. Everything worked great. Were happy and cool.

Purchased to replaced a 32M8801 board in my Lennox unit, worked fine without any complications.A few thing to keep in mind if this is a DIY job:- This board was larger than the one I was replacing, the fit was tight and I had to re-locate the 24V transformer. Directions are also very explicit in that the board needs to be oriented upright in a specific direction. As a result your current wiring for sensors, switches, power, controls, etc may need to be spliced and extended to make the connection to the board. Not difficult or pricey, home depot has everything you need.-The 3A fuse is external to the board. Previous Lennox board had the fuse integrated but this is an external one that plugs in between the transformer and the board.-The LED status lights will likely be located in the different location from the board you are replacing. If you have a see-through hole on your unit's door it likely won't line up with the new board's LEDs.Other than those small issues it works fine. Will update if things change.

A local HVAC service company told me my furnace control board was bad and wanted $900 to replace it. So I saved almost $700 with this unit and the igniter. Installation was easy and the instructions were clear, although there was one minor error with which mounting holes to use, which was obvious to correct. Make sure you take a lot of pictures of the old board and wiring as you disassemble it. This is essential to ensure that you connect it properly. A mistake here can be expensive. I took several pictures, but wish I had taken more because a couple of wires were covered up by others. I was able to get it right through a process of elimination, so it all turned out fine.

Arrived a bit earlier than expected! This worked like a charm for a Lennox G49H furnace. I did not need any of the supplied parts just disconnected the wires from the old board and plugged them into this replacement. Slightly larger than the original board but it fit nicely.

This replaced the fan board for our Lennox G23Q3/4-100-6 furnace. It was a bit confusing at first since my husband doesn't have any experience doing this sort of thing and the directions don't tell you how to do everything. After he figured out where everything goes, it worked perfectly. The initial issue was the fan would randomly stop once the furnace got up to it's temperature and wouldn't come back on. It also wouldn't hardly blow any air even though he had already replaced the blower motor, and this made our house very cold. He said that the old board may be defective and was causing a voltage drop which wasn't fully powering the blower motor. We've had it in for about a week and the furnace has worked beautifully.

This is a newer version of the board I was replacing which means the wires go to different places. There is a good video out there that gave me the confidence to take on this task. Depending on which unit/board you are swapping out you may need to extend a wire or add a lug. In my case the main power in coming from the safety switch/ door switch was too short and also the ground wire needed a crimped on lug to properly attach it. My advise is to label the thermostat wires to get them back to the right terminals but all of the thicker wires were simple.

Board was larger but on the Lennox, I didnt have any issues with wires reaching the board.On the old 32M8801 board, the unused fan wires were parked (unused). However this board did not turn on the blower when just the fan is run. This is because this board has a dedicated fan pinout that the old board did not. To get around it, use one of the parked fan pins to plug into the "FAN" pin. Note: The blower fan usually has a seperate wire for different speeds. In my system, black was highest speed, brown was next, then yellow then red. Black usually goes on to the "COOL" pin (AC runs at highest fan speed). And depending on the side of furnace, the head mode fan speed in my case was yellow. I connected yellow to HEAT and connected the red wire to "FAN". On my old board, the red wire was just connected to PARK (unconnected).

The product worked just as advertised. The only issue that I had was with the mounting plate but I was able to fix that by drilling two new holes. It was easy to change over from the old one. The only issue with the wiring was on the ground wire connection, I had to use a wire nut, rather than the connection that was supplied. Overall the board was great and saved me a lot of money, no new furnace.

Good quality, simple and detail instructions. Removed the old board from the mounting panel with the wiring attached, mounted the new board on the panel in the kit and mounted it to the existing panel ( no drilling required}. I then moved the wiring from the old to the new board 1 at a time. Mounted the circuit breaker in an existing hole on the transformer bracket. Cut the blue wire provided in half, put the connectors on the circuit breaker, connected 1 side to the transformer and the other to the existing transformer wire.Worked with no problems

Awesome product and glad it was available.Too bad the Prime eligible product which was available with over night delivery, cost me nearly $100 more than the listed price shown ($222 CAD). Winter weather definitely limits the options :-)As is my normal approach, read the manual carefully and compare the new board to the existing installation.- confirm wire colors and functions (old to new)- test mount the new board to the mounting plate- check the location of the stand-offs on the adapter plate- mount plate- mount board- plug in all wires as directed in the manualThe overall exercise took less than 30 minutes, not counting the initial review of the documentation (10 minutes).

Replaced my furnace module myself easy to understand manual no problems so far using it for 2 years now.

Work as expected. Need to figure out how to connect the wires, the instruction is helpful.

This is a good universal kit get an older furnace going that has a bad board. Instructions were good and it was delivered ahead of schedule! Some electrical knowledge is required to do this yourself. Much cheaper than replacement parts from Lennox.