Tankless Water Heater Priority Light

All tankless units have a minimum flow rate which must be achieved before the water heater will start heating water.

Tankless water heater priority light.

Each rinnai unit uses a temperature controller either mc 91 1 or mc 91 2 on the front panel to display various configuration options for installation as. Since rinnai water heaters are one of the most advanced tankless water heaters available we recommend to contact a service technician that s authorized to work on rinnai water heaters. We have 2 rinnai r85 water heaters. Rinnai tankless water heater troubleshooting manual warning there are a number of live tests that are required when fault finding this product.

When you press the priority button the green light will glow indicating that the controller is controlling the temperature and that a water heater is ready. Turn off gas and water supply valve 4. What size tankless water heater do i need. This morning there was a humming nois read more.

Available only on models featuring a 1 or 2 in the model number. One of them will not put out hot water. Why does a tankless water heater cost more than a tank water heater. Often low flow showerheads or fixtures cause the problem so the aerators inside should be removed.

3 available on all rheem tankless water heaters excluding the rheem high efficiency tankless water heater. Press the priority button on the temperature controller. 1 based on comparison of high efficiency condensing natural gas tankless model against 50 gallon tank type model with like fuel type. 2 savings based on doe test procedures.

Rinnai water heaters work in the temperature range from 98 f to 140 f while they come with the factory setting of approximately 120 125 f. Turn off the hot water supply 2. Extreme care should be used at all times to avoid contact with energized components inside the furnace. Do not allow anyone to change the water temperature while hot water is being used.

He or she will make sure your gas. Can a rinnai tankless water heater be used to heat a pool or spa. It means that your unit is not firing up to heat the water a situation that can be caused by insufficient gas supply insufficient airflow or debris on the ignition plug. Other solutions may be to clean out the inlet water filter on the water heater or turn down the temperature on the unit.

There s no circuit breaker problem. Control r how many push buttons and motion sensors are supported per each module. Turn off the power to the water heater 3. Call the nearest noritz agent be sure to do.

After checking to see if the gas is turned on call a licensed contractor. This indicates ignition failure in your tankless water heater. To prevent scalding do not change the water temperature to a higher setting. The priority can only be changed while no hot water is running.

If the water heater is off press the on off button to turn on. The priority light is on as is the temp.