Error Code 63
  1. Check if the tankless is producing a water flow using the temperature controller by pressing the “UP” button for 3 seconds and then the “ON/OFF” button.
  2. If the flow rate was below 1.3 gpm, bleed the air from the pump and system tank.
  3. Remove and clean the inlet water filter.

Then, Why do I have to keep resetting my tankless water heater?

While a bad thermostat is the most common reason your water heater’s reset button may trip, it’s not the only one. Other common causes include: A shorted heating element—It may be that the thermostat is working just fine and shutting off the heating element.

Considering this, What is code 12 on Rinnai tankless water heater? Error code 12 indicates your Rinnai hot water system has a flame failure or low gas flow. If you encounter error code 12, you can try the following steps to fix the problem: Check gas is turned on at the gas metre or cylinder. Check gas is turned on at the water heater. Check there are no obstructions to the flue


26 Related Questions and Answers Found 💬

 

What is code 12 on Rinnai?

Rinnai Error Code 12 Troubleshooting

Error code 12 indicates your Rinnai hot water system has a flame failure or low gas flow. Check gas is turned on at the gas metre or cylinder. Check gas is turned on at the water heater. Check there are no obstructions to the flue outlet.

Can a tankless water heater run out of hot water?

Instead of constantly heating water in a stored tank, tankless units only heat water as you need it. Since tankless heaters heat water as it flows, you’ll never run out of hot water. Tankless heaters also last five to ten years longer than a storage tank model.

What is code 11 on a Rinnai?

Rinnai error code 11 is an indication that there is no ignition in, or no gas supply to, your hot water system. You can try the following to fix the problem: Check your hot water system for any visible damage or loose parts. Test your gas supply by turning on a gas appliance, such as a stove-top.

Why is my Rinnai beeping?

The beeping may be initiated by a water heater shutoff feature, a flood prevention device. Beeping may also signal a gas leak. Low Fuel. Some propane-fueled water heaters emit a beep when they are low on fuel.

Can you adjust the temperature on a tankless water heater?

Temperature adjustment on a tankless heater is simple. Each tankless water heater or POU device has a LED panel where you can adjust the desired temperature. You can adjust the temperature degree by degree, rather than by a less precise dial control.

How do I fix my Rinnai Code 11?

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. If gas is being supplied to the tankless water heater and the igniter is working, call for an evaluation by a qualified plumber.

How do I increase the temperature on my Rheem tankless water heater?

To change the temperature settings up to 140°F (60°C): Turn on the remote control. Turn off the gas and water to the water heater by closing the shut-off valves. Press the UP adjustment button repeatedly until 120°F (49°C) shows in the LED display.

What is the best tankless water heater?

The market gives you many models of tankless water heaters, but it’s typically a red button on the upper thermostat of your electric water heater. In some situations, you may need to remove a small panel for reaching it. If the button is lit up, it means that the switch has tripped, and you need to make a reset.

What size tankless water heater do I need for a family of 5?

Sizing Guide for Residential Tankless Water heater
Household Occupants Usage Capacity Required (Measured in Gallon)
3-4 people High 50-75
5+ people Regular/Low 50
High 75

How does a Rinnai water heater work?

When the need for hot water arises by turning on a shower, washing machine, dishwasher or faucet, cold water flows into the Rinnai Tankless Water Heater from the inlet pipe at the bottom of the heater. The flame is ignited and heats the two heat exchangers that are included in the Super High Efficiency models.

Why am I not getting hot water from my tankless water heater?

Because tankless units only heat water as it’s needed, running too many hot water appliances at the same time could mean the unit just can‘t keep up. On the other hand, your “no hot water” problem could be cause by a bigger issue such as: Plugged heat exchanger (due to hard water) A blocked vent/air intake.

Which is better tankless or tank?

According to Energy.gov, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.” Tankless water heaters (if gas-fired) will save homeowners over $100 annually the longer they remain in service.

Why is my tankless water heater not heating water?

How long does a Rinnai water heater last?

20 years

What does LC mean on a Rinnai water heater?

Error Code 00 or “LC”: Scale build up in heat exchanger.

Note: A lot of customers ignore this code because it still allows the tankless water heater to continue running. You will see the display alternates between the LC code and the temperature setting.

How hot do tankless water heaters get?

Answer: You’ll need to raise the incoming water temperature from 40 degrees to 105. You’ll need to be able to heat at least 5.2 gallons of water, so you’ll need a tankless water heater that can produce at least a 60 degree rise in temperature at 5.2 gallons per minute.

What happens when a tankless water heater fails?

A tankless system can also fail in the ways that a standard gas-powered water heater or furnace can fail. The gas jets can become dirty and fail to ignite fully—or ignite at all. If the electronic ignition system breaks, the water heater won’t come on and you’ll end up with no hot water at all.

Does tankless water heater have pilot light?

A tankless water heater has a lot of moving parts, and there are more things which can break then on a tank water heater. Most of these water heaters do NOT have a standing pilot light. They use electronic ignition to light the gas.

Are Rinnai tankless water heaters good?

High efficiency

There are many benefits for the owner of a Rinnai tankless water heater; reliability, on demand and almost instant and endless hot water supply, up to 40% energy savings, and high energy efficiency that ranges from 82% to over 90%.

What is the best tankless water heater?

One of the main causes for the reset switch to trip is because the water heater is actually letting the water get too hot. This is probably an indication of a faulty thermostat in either the upper or lower heating element.

Are Tankless Water Heaters Worth It? 10 Pros and Cons
  • Pro #1: Instant Hot Water.
  • Con #1: Inconsistent Temperatures.
  • Pro #2: Longer Lifespan.
  • Con #2: Higher Initial Cost.
  • Pro #3: Lower Month-to-Month Costs.
  • Con #3: Limited Hot Water Supply.
  • Pro #4: Space Savings.
  • Con #4: Additional Equipment is Often Necessary.

Do tankless water heaters need to be flushed?

Tankless water heater manufacturers recommend their units be flushed at least once a year to eliminate the buildup of calcium and other minerals within the unit — even more often if you have hard water. Some units will indicate when the unit is in need of flushing.

How much does it cost to replace a hot water heater with a tankless?

A new tankless water heater costs between $1,500 and $2,000 installed, while a whole house tank costs between $600 and $800. A tankless hot water heater costs around $430 without installation and a traditional heater costs around $440.

How much does it cost to replace a hot water heater with a tankless?

Best Tankless Gas Water Heater Reviews – (Top-Picks)
  1. Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater.
  2. Rheem RTGH-95DVLN Indoor Direct Vent Tankless Natural Gas Water Heater.
  3. Rinnai RUC98iP Ultra Series Propane Tankless Water Heater.
  4. Eccotemp i12-NG Tankless Water Heater.
  5. Excel TANKLESS LPG GAS WATER HEATER.

Are propane tankless water heaters worth it?

The U.S. Department of Energy estimates gas-fired tankless heaters save an average of $108 in energy costs per year over their traditional tank counterparts, while electric tankless heaters save $44 per year. Rewiring your house can easily add as much as $5,000 to the cost of installing a tankless water heater.

How long should it take to get hot water from a tankless water heater?

Tankless units take about 15 seconds to bring water up to temperature, but you still have to wait for that hot water to arrive at your showerhead or faucet, just as you do with a tank-type heater.

How do I reset my thermostat?

Here are the steps you need to take to reset your AC thermostat.
  1. Shut Down Your AC at the Thermostat. The first step in resetting your AC thermostat is to turn it off at the AC unit.
  2. Find Your Circuit Breaker Box.
  3. Reset the Circuit Breaker for Your AC Unit.
  4. Wait 30 Seconds.
  5. Turn the AC Thermostat Back On.

How long do tankless water heaters last?

20 years

What are the pros and cons of tankless water heaters?

Tankless units take about 15 seconds to bring water up to temperature, but you still have to wait for that hot water to arrive at your showerhead or faucet, just as you do with a tank-type heater.

How long does it take for hot water to reset?

The average gas heater takes between 30 and 40 minutes to fully heat up the water in its tank. The average electric heater takes about twice as long as the average gas heater to fully heat up the water in its tank, so you can expect it to take between an hour and an hour and 20 minutes to heat up.

Why is hot water not working?

Are Tankless Water Heaters Worth It? 10 Pros and Cons
  • Pro #1: Instant Hot Water.
  • Con #1: Inconsistent Temperatures.
  • Pro #2: Longer Lifespan.
  • Con #2: Higher Initial Cost.
  • Pro #3: Lower Month-to-Month Costs.
  • Con #3: Limited Hot Water Supply.
  • Pro #4: Space Savings.
  • Con #4: Additional Equipment is Often Necessary.