Troubleshooting Fogatti Water Heater That Blew Fuse Immediately and Won't Turn On
Question:
Trying to install fogatti unit, first try fuse blows. Replace fuse and now it will not power on at all, after removing wiring and redoing with white to white black to black. Place wiring back to initial that blew fuse, and won’t power on. What is wrong?
asked by: Cody
Expert Reply:
The wire colors on the Fogatti RV Tankless Waterheater # LSB44FR are black and red, with black being the negative wire to the battery, and red being the positive, though recently we've seen that sometimes it uses black and white with black being power and white being negative.
It sounds like it was originally wired incorrectly which caused it to blow a fuse.
Use a circuit tester like # PTW2993 to test the positive and negative wire you're hooking up and make sure it has power still. When it was wired incorrectly it could have tripped a circuit breaker or different fuse closer to the battery, and right not may not even be sending power.
Let me know what you find.

Products Referenced in This Question
Continue Researching
- Q&A: What Size Fuse For Fogatti Tankless Water Heater
- Q&A: Troubleshooting A Fogatti Tankless Water Heater That Won't Power On
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Shop: Advent Air Low Profile RV Air Conditioner - 15,000 Btu - Black
- Shop: Furrion Adapter Wiring Kit for Coleman, Dometic, or Advent Air RV AC Units - R410a
- Shop: Adapter Wiring Kit for Advent Air RV Air Conditioners - 9-Pin to 6-Pin
- Q&A: Wiring Steps When Installing The Fogatti Tankless Water Heater
- Q&A: Why Does The Fuse On My Fogatti Tankless Water Heater Keep Blowing When I Connect It To 120V AC
- Video: Comprehensive Review: Advent Air Low Profile RV Air Conditioner
- Video: All You Need to Know About the Adapter Wiring Kit for Advent Air RV Air Conditioners
- Q&A: Replacing An Old Atwood Water Heater With A Fogatti Tankless Water Heater
- Q&A: Troubleshooting Fan Issue On An Advent Air RV Air Conditioner
- Q&A: Wiring Diagram for Advent Air Conditioner ACM135
- Shop: Standard Fuse Kit - 5 Amps to 30 Amps - 60 Pieces
- Shop: Furrion Chill HE Replacement RV Air Conditioner for Coleman Setup - 13,500 Btu - Black
- Article: How to Troubleshoot Your RV Air Conditioner
- Video: Breaking Down the Advent Air Replacement RV Air Conditioner for Dometic Setup
- Shop: Trailer Hitch
- Search Results: rv air conditioners
- Article: Trailer Wiring Diagrams
- Shop: Advent Air RV Air Conditioner - 15,000 Btu - White
- Shop: Advent Air RV Air Conditioner - 13,500 Btu - White
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Search Results: advent air rv air conditioners
- Video: Complete Breakdown of the Advent Air Replacement RV Air Conditioner for Carrier Setup
- Search Results: trailer jack
- Article: Trailer Drum Brakes vs. Disc Brakes: Making the Decision
Derrick
4/9/2024
But it wouldnt continue to keep blowing fuses if your power source is still positive@120 , its only blowing the10amp fuse on the unit