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Paul RiceJul 29, 2025
What to do if the Lennox Portable Generator controller LED display is off?
- MMary ParksJul 29, 2025
If the Lennox Portable Generator's controller LED display is off, there could be several reasons. First, check the controller fuse (F3) and replace it if blown. If it blows again, contact a Lennox dealer. Also, check all connections and verify the engine starting battery and battery charger. Another cause might be that the generator set master switch is in the OFF/RESET position; move it to the AUTO or RUN position. Note that in AUTO, the display won't turn on until the first start command is received. Finally, the controller might be in sleep mode. The display will activate when a remote start command is received or the generator set master switch is moved to the RUN position. You can also use the remote switch to start the generator set and activate the controller display.
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