How do I reset my Rinnai rl75?

Turn off all hot water faucets/taps. Press On/Off button twice. Turn hot water back on and test. You may have to try this a couple times to reset the system.

Why would the igniter keep turning off on a Rinnai water heater?

If your gas water heater keeps shutting off, the thermocouple could be dirty, bent or damaged. The thermocouple is usually easily visible next to the pilot light. If it is dirty, turn off the gas to allow the thermocouple to cool. You can then clean the thermocouple by gently sanding it with fine sandpaper.

What does code 11 mean on a Rinnai heater?

No ignition
Rinnai fault code 11 – No ignition. Check to make sure the gas is turned on at the water heater, gas meter or tank. Ensure the igniter is operational. Make sure the heat exchanger is not clogged and that low water flow is not causing short cycling.

Where is the reset button on my Rinnai tankless water heater?

The water heater reset button is the red button located on the water heater itself (just above the thermostat). Some water heaters may have two reset buttons-one for each thermostat. To access the reset button, you may have to remove the metal plate covering the thermostat that’s held in place by screws.

What should I do if my Rinnai Water Heater is not working?

Inspect the flame rod for debris and dirt – clean as needed and replace if there are cracks. Replace the gasket as well. Always look for the manufacturer’s instructions for the correct vent installation, the recommended material, size, length, and proper clearance around the vent.

How to troubleshoot a Rinnai tankless air unit?

 Turn off gas valve feeding the appliance.  Unplug igniter wire; hold the igniter wire with an insulated pair of pliers about a 1/4″ from a piece of metal.  Cycle the unit to ensure you see a spark when unit is cycling.

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