Troubleshooting A Fogatti Tankless Water Heater Controller That Won't Turn On  

Question:

Expert Reply:

If the wall remote for your Fogatti RV Tankless Water Heater # LSB64FR won't power on then you'll want to check to make sure that the fuse on the main unit is blown and that the switch next to it is in the on position. If these are both good then it's time to test the wires for 12v power with a multimeter # PT89ZR. You can start with the main unit to see if it's getting power and then test the wire at the wall control to see if 12v power is making it to the control.

If you have power making it to the control and it still isn't powering on then you have a bad control and will need to reach out to Fogatti for a replacement.

expert reply by: Kevin C

0

Fogatti On Off Switch
(click to enlarge)

John

10/27/2025

I didn’t notice you addressing if power to the unit is good but no voltage to controller.

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Jameson C.

10/27/2025

@John Is that what you have going on?

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