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Lennox CB29M-21 Control Board
The control board is designed to oversee the gas valve, the igniter, all the various sensors and the blower all at once. Heating and cooling systems will not even activate lest the main control board is installed as it should be according to the manufacturer. The control board you choose must be compatible with both the make and model of the unit you have installed. You must be careful upon choosing a board as a replacement due to differences in HVAC systems.
Clues to watch for to know your control board is dying
- There is numbered code being shown somewhere on the circuit board
- System is not able to start whatsoever
- The power to the system has to be powered down and back up a lot for it to kick in
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Before buying or ordering a replacement control board for your Lennox CB29M-21, do your due diligence and make sure of the correct model and also make a visual inspection in order to be sure the proper replacement control board is the one being purchased. Replacing the control board can be quite easy if you energy and have the proper tools to get it done.
Feel free to download your manual for help.
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