Troubleshooting Mr. Heater Big Maxx 4 Flashes [Easy Fixes]
Mr. Heater Big Maxx 4 flashes on the control board as an error indication of an opened high limit switch … Read more
Mr. Heater Big Maxx error codes
Mr. Heater Big Maxx 4 flashes on the control board as an error indication of an opened high limit switch … Read more
