Troubleshooting No Hot Water Output From A Fogatti Tankless Water Heater

Question:

The only time my tankless fogatti water heater is turning on properly is when we manually turn the pressure release on the actual unit it will power on and work correctly heating up the water and then it just stops and s back down to 73 degrees. The red knob in picture . When we turn that everything works water draining is hot. But it wont come through the water lines hot, long enough.

asked by: Andrea S

Expert Reply:

If I'm understanding you correctly you're only getting hot water from the pressure relief valve of your Fogatti RV Tankless Water Heater # LSB64FR and there's no hot water at your faucet at all? If so there might be a valve between the unit and the faucet preventing hot water from flowing to it. You could also have an issue with the specific faucet's mixing valve. Try testing another faucet to see if the issue is with the entire system or just that specific faucet.

If there's no valve closed off preventing the flow of hot water then you most likely have a sensor issue and would need to reach out to Fogatti for repair/replacement parts.

expert reply by: Kevin C