Receiving Helpdesk

how do you fix a rheem tankless water heater code 11

by Kathlyn Nader Published 4 years ago Updated 3 years ago

Error Code 11. What it Means: There’s no ignition. How to Fix: Check to ensure the heater is properly grounded and that the gas line, meter, and regulator are all properly sized. Check the gas solenoid for valves for short circuits and the igniter wiring harness for signs of damage. Bleed any air from the gas lines.

Full Answer

How to troubleshoot tankless water heater error codes?

Resolving EcoSmart Water Heater Error Codes

  • E1 Error Code. This is an error on the thermistor. ...
  • E2 Error Code. This is an EcoSmart tankless water heater error on the outlet thermistor. ...
  • E3 Error Code. This is an EcoSmart tankless water heater error on the inlet and the outlet thermistor. ...
  • E4 Error Code. ...
  • E5 Error Code. ...
  • S103 Error Code. ...

Should I replace my water heater with a tankless heater?

Why upgrade to a tankless water heater?

  • Efficient. In addition to providing hot water whenever you want it, tankless water heaters are also much more efficient to use.
  • No waiting. With traditional RV water heaters, you have to wait a while for the water to heat up after turning them on.
  • Less maintenance. ...

Is a tankless electric water heater worth it?

Rewiring your house can easily add as much as $5,000 to the cost of installing a tankless water heater. Tankless models save space, offer longer warranties. Many homeowners, however, see benefits of a tankless water heater beyond energy savings. These heaters also save space with a compact design, last longer and are better for the environment because a rusty tank doesn’t end up in the landfill.

Are tankless heaters worth it?

Tankless water heaters are typically quite pricey, especially if you have to go after a particular model depending on how your RV is set up. If you only take your RV out a few weekends each year, it probably isn't worth spending the extra money.

How do you fix code 11 on a tankless water heater?

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 you reset the code on a Rheem tankless water heater?

How Do I Reset My Tankless Water Heater?Head to the electric panel and locate the water heater circuit. ... Remove the panel cover and locate the reset button behind the insulation.Press it inwards until it clicks in place and then releases.Replace the panel cover.If the gas valve was disconnected, reconnect it.More items...

How do I fix code 11 on Rinnai?

Inspect the flame rod and make sure that the wiring look is in good condition and all connections appear secure. Look for any dirt or debris on the flame rod or gasket, and clean if needed. If the parts appear damaged or cracked, they will need to be replaced.29-Jun-2021

How do I reset my tankless water heater?

0:191:51Resetting the HLD of the Tankless Water Heater - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou can press and hold both up and down arrows until P zero and two numbers will come. Up. Then youMoreYou can press and hold both up and down arrows until P zero and two numbers will come. Up. Then you let go you're going to hit the down arrow.

How do I reset my Rheem water heater?

Turn the water heater's gas valve switch to the "OFF" position, wait for a few seconds and then flip the switch to the "ON" position to reset the system.

Does a tankless water heater have a reset button?

To prevent accidental resets, tankless water heaters are designed to prevent accidental resets, so you are probably going to have to hold the button down to get the reset to trigger.

Why is my Rinnai flashing 11?

Rinnai Gas Heater fault code 11 indicates a no ignition or no gas supply on your gas heater system. ... A gas supply issue may be present if the flame on the gas heater pilot drops in pressure, of if your gas heater does not work then there is no gas supply present.10-Feb-2020

How do you clear a Rinnai code?

After flushing water heater, the procedure to reset LC codes: Push the two switches (A and B) on PC Board at the same time for five seconds. Water heater will return to normal operation and LC# count returns to 0. This hard reset procedure is not in owners/installation manual or tech sheet.18-Jan-2011

How do I reset my Rinnai tankless water heater?

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.05-Jul-2018

Why does my Rheem tankless water heater keep turning off?

Electric Tankless Water Heater Keeps Shutting Off It could be something as simple as a loose wire. ... Check that the heater is getting electricity, gas and water. Check the filter to make sure that there's no debris in it. Finally, the problem may have to do with low water flow rate.

What causes a tankless water heater to stop working?

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.18-Jun-2021

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.08-May-2018

Why won't my tankless water heater work?

And if you have a power outage, of course your tankless water heater will not work because it cannot ignite. That is a down-side to a tankless water heater. (A conventional tank-style water heater of course can continue to supply at least the warm water sitting in the tank.)

How much water does a tankless water heater need?

All tankless water heaters have a minimum flow rate requirement. Most newer models require half gallon per minute to fire up and older models require three quarters of a gallon per minute.

What is the error code for Navien water heater?

A whole-house Navien tankless water heater will show error codes E003, E012 or E110.

What position should a Noritz gas valve be?

Make sure the gas valve is in the “open” position. This diagram shows a Noritz tankless gas valve open.

Can a tankless be repaired?

We have the tools and experience to quickly identify failed sensors and circuit boards. If it’s cost-effective to repair your tankless (and its not reaching its 20 year life expectancy ), we’re the most qualified plumbers to repair it! If it is reaching its end of life, we’re also the most affordable plumber to replace it!

Do electric water heaters have wires?

Whether you have an electric or gas tankless water heater, you’ll still have wiring and electrodes. Check all visible wiring and electrodes to see if any are loose and reconnect them.

Do you have to check if you have enough propane?

Even smart people sometimes forget to check that they have enough propane (if that’s their fuel source). Often the water heater is the FIRST to run out so just because your stove gas burner still lights up, it does not mean your water heater is getting its gas supply. Likewise, if your home has natural gas, be sure you’ve paid your gas bill.

What is the Rheem service number?

Use your Rheem heater manual as a reference when performing any repairs, and make sure to use the technical support number (1-866-720-2076) whenever you’re unsure what to do. Have a different tankless water heater brand that needs troubleshooting? Navien error codes.

What does it mean when a fan isn't turning properly?

What it Means: Combustion Fan Failure - The combustion fan isn’t turning properly. How to Fix: Check to make sure there’s no damage to the wiring harness or motor and all connections are tight. The fan motor should turn with minimal resistance. You may also wish to Ohm out the motor winding.

How to fix a flame rod?

How to Fix: There is likely an issue with the flame rod. Ensure the wiring is undamaged and providing the proper voltage. Remove the flame rod and clean off any carbon buildup with sandpaper. Replace the rod, making sure it touches the flame when firing and there are no foreign materials getting in the way.

What does "imperfect combustion" mean?

What it Means: Imperfect Combustion - The system is dirty or blocked.

Who is Anthony Barnes?

Anthony Barnes is the founder of Water Heater Hub and a second-generation plumber by profession. Before developing Water Heater Hub, Anthony Barnes was a full-time plumber, and he has undertaken a wide variety of projects over the decades.

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