Tankless Water Heater Not Controlling Temp

[Morgan_N]

We have an East to West 2023 Alta 2600 KRB. The tankless water heater regularly exceeds the temperature to which we set it by 20 degrees or more. Has anyone experienced this or has any troubleshooting thouhts?

[Twinboat]

If your using a water pressure regulator, take it off and try it. They depend on proper flow.

[Morgan_N]

We are using a ware pressure regulator because the factory said to limit the pressure to 45 lbs.

I understand what you are driving at, but when the water pressure is to low the controller turns off the heater. The control panel in the rig shows the water temp, when the heater is on, and the status of the propane flow to the water heater.

When we turn on the hot water it heats it to 120-125 degrees. However, we have it set to 105