Troubleshooting a Tankless Water Heater that Won't Start
Updated 10/30/2025 | Published 02/13/2025
Question:
Hello I bought a tankless water heater 2 years ago and it stopped working. It wont kick on or do anything but the thermostat is powered on. Can ypu help me please?
asked by: Breahna W
Expert Reply:
Hey Breahna I can give you some basic troubleshooting steps but without knowing what model hot water heater you have I can't really get too specific. I recommended checking all your fuses and turning the unit on and off. Do you have any error codes when you do this? If it's propane your regulator may not be providing enough gas. You may also be under warranty so it would be a good idea to contact the manufacturer directly for their guidance.
Go ahead and comment below with any additional information and questions you may have.
Product Page this Question was Asked From
Replacement Wall Controller for Furrion RV Water Heaters
- Accessories and Parts
- RV Water Heater
- Control Panel
- Furrion
more information >
Continue Researching
- Q&A: Tankless Water Heater For Replacing Atwood/Dometic GC10A-4E
- Q&A: Solution for Replacing 10 Gallon Dometic RV Water Heater
- Q&A: Replacement Hub Assembly And Drum Brake For My Dexter 8-407 4.4K Axle
- Q&A: Recommended Replacement for Atwood GC10A-4E RV Water Heater
- Q&A: Bearings, Seal and Brake Soes for 2016 Forest River Sierra with 7k Dexter Axles
- Article: Replacing RV Awning Fabric: Your Step-by-Step DIY Guide
- Q&A: Are Replacement Parts Available for a Dometic 310 Toilet
- Q&A: Why Can't Furniture Switch # 37213925 be Used with Slide Out
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
Jerred H.
10/30/2025
Hey Breahna, were you able to get your tankless water heater working again after checking the fuses and power cycling it? Knowing what ended up fixing it could really help others with the same issue.