What is the priority button on Rinnai?
1. Press the “Priority” button on the temperature controller. The green Priority light will glow indicating that this controller is controlling the temperature and that the Rinnai water heater is ready to supply hot water. 2.
Why is my Rinnai water heater not working?
How to Fix: Check for low flow in the water circulation system which causes short cycling. Confirm there are no obstructions in the combustion chamber or exhaust piping. Confirm no blockage in heat exchanger fins. Clean out heat exchanger fins or replace heat exchanger.
What temperature should Rinnai be set at?
120℉
For your safety, Rinnai tankless water heaters come with a maximum temperature default setting of 120℉ to help prevent scalding. However, by following these simple steps, you can increase the temperature to 140℉ if you choose.
Why does my Rinnai tankless water heater go cold?
A broken flow sensor can cause your tankless water heater to run hot and cold. The flow sensor measures the water entering your system and sends that information to your unit’s control board. If there’s a burst of cold coming into the system, then the controller adjusts the flame.
Why is my tankless water heater not getting hot enough?
The Air Supply or Exhaust Is Blocked At times, your exhaust or air supply might get blocked, which can cause your tankless water heater to stop heating. Many water heaters will automatically shut off as a way to protect the appliance and help prevent other safety hazards that could result.
What setting should my water heater be on?
120 degrees Fahrenheit
120 degrees Fahrenheit is the safety recommendation against scalding, but 140° is the common default setting. Most experts agree that anything below 120 degrees creates a risk for bacteria to develop inside your water heater from stagnant water, such as legionella that causes Legionnaire’s disease.
What temp should hot water be?
The ideal temperature for domestic hot water is 120 degrees Fahrenheit, or 49 degrees Celsius, to avoid the possibility of scalding. Furthermore, if the water heater is set at too high a temperature, it can result in unnecessarily more expensive energy bills from the running water emerging from shower systems and taps.
What temp should a hot water heater be set at?
Why does it take so long to get hot water from my tankless water heater?
The length of the delay can be determined by a few factors, including the distance between the water heater and the outlet. In other words, the longer the water has to travel, the more cold water will need to be discharged before the hot water appears.
Why is my tankless water heater not getting hot?
Why does my tankless water heater go cold?
First off, this is a common tankless problem called a “cold water sandwich”. This problem happens because the heat exchanger (the part that actually heats the water) takes a while to warm up. Before it fully warms up and starts heating the water, you get a short run of cold water.
Is there a reset button on a Rinnai tankless water heater?
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.
What is the best temperature for a tankless water heater?
You’ll want to shoot for 100-115 degrees Fahrenheit for your water to be heated. If your groundwater temperature is 60 degrees and you want your shower at 110 degrees, that’s going to be a 50-degree rise.
Why is my tankless water heater only lukewarm?
Causes of a Lukewarm Hot Water Heater Gas hot water heater is out of fuel. Electric hot water heater doesn’t have power. Broken dip tube. Depleted hot water supply.
Why does my water only stays hot for a few minutes?
Water Heater Runs Out Of Hot Water Quickly: Possible Reasons Why. As mentioned above, several things can cause a home’s hot water supply to run out faster than it should. The three most common culprits are sediment build up, a faulty heating element and a broken dip tube.