Rheem Main Remote Control Beeping and Flashing 11 – Troubleshooting Guide

If your heater’s remote control is making a sound, then it’s trying to bring something to your attention.

Your Rheem main remote control will start beeping and flashing 11 when there is an ignition failure; make sure that there’s gas flowing to the unit and check the ignitor. The problem might also be with a faulty thermostat, an overheating issue, and extremely high pressure.

Do Heaters Beep?

All water heaters can beep. It doesn’t matter whether you have a tankless model or a unit with a tank, a Rheem water heater, or one from another manufacturer – every water heater is equipped with a beeping system

The beeping sound is part of the alert system. Its main aim is to tell the homeowner that there is something wrong with the hot water heater.

Why Is My Heater Beeping?

Quite a few different issues can make a water heater beep:

  • The unit needs descaling
  • There is a water or a gas leak
  • The air intake channel is blocked
  • The unit is overheating
  • There is a system overload
  • The inlet or aerator is clogged
  • The unit is low on fuel
  • There is a build-up of pressure

Read: Rheem Water Heater Troubleshooting

Why Is My Electric Heater Beeping?

The two most common causes for such a sound in an electric water heater include steam and sediment build-up.

At times, lowering the thermostat setting a bit would help you with the first issue. To get rid of the sediment, you would have to flush the tank. 

Why Is My Rheem Beeping?

All the issues mentioned above can make your Rheem water heater beep.

Another thing that you might want to check is the condensate line. Try pulling the clear tube off the unit and putting a bucket under it; after that, run hot water.

A clog in the line or ice might have been the root cause of the problem.

Read: Rheem Water Heater Error Codes

Why Is My Tankless Hot Water Heater Beeping?

Always pay attention to the codes that will get displayed on the unit, if an error ever occurs. The beeping sound will, most likely, be accompanied by a fault code (consult the user’s manual to find out which component you would have to tackle).

The issues that can make a tankless unit beep include:

  • An improperly sized water heater
  • A faulty thermostat
  • Improper venting
  • Leakage
  • Extremely high pressure
  • Overheating
  • Wiring problems
  • Sediment build-up
  • A low flow rate

What Does Code 11 Mean on a Tankless Water Heater?

Fault code 11 generally means ignition failure in tankless water heaters. There are plenty of things that can cause such an issue:

  • A problem with the gas supply
  • An electrical outage
  • Loose wiring
  • A loose electrode
  • Insufficient airflow
  • A dirty burner
  • Low flow rate
  • A failure of the ignition or the high-limit switch
  • A failure of the electronic board

Read: Rheem Chamber Sensor Failure – Troubleshooting Guide

Rheem Main Remote Control Beeping and Flashing 11

The remote control started to beep to bring the error code to your attention (in our case it’s error code 11 – no ignition).

The beeping and the flashing show that there isn’t enough gas getting to the water heater, so, as a safety measure, the unit had to lock itself out.

Rheem Error Code 11 Fix

To fix ‘no ignition’, you would have to make sure that there is gas to the unit and check the ignitor.

How Do I Get My Thermostat to Stop Beeping?

The majority of thermostats are actually not capable of producing an audible sound. So, if you hear something beeping, double-check if it’s the thermostat or another device in the room.

If it’s your thermostat that’s making the sound, then you can try changing the batteries, resetting the device, and checking the notifications in the app that you have connected to the thermostat. 

How Do I Stop My Furnace from Beeping?

  • Change the filter
  • Check the power
  • Make sure that the sensor is clean and not defective
  • Ensure that there isn’t too much condensation in the system

How Do I Reset My Rheem Error Code?

Consult the owner’s manual to find out what the error code indicates. After that, you would have to fix the issue – this should make the fault code go away.

If the code is still displayed, then you can try resetting the water heater.

Read: Why Gas Water Heater Keeps Cycling ON And OFF?

How Do You Fix a Rheem Tankless Water Heater Error Code 12?

Code 12 means that the unit cannot detect the flame. 

  1. Make sure that your house is getting gas.
  2. Ensure that the gas valve is open.
  3. Clean the flame rods (you’ll find them under the front panel, on the middle left side). Don’t forget to shut off the power, water, and gas to the unit, before cleaning the rods. 

Rheem UMC-117 Reset

  1. If the circuit breaker had tripped, flip the breaker back to ‘on’.
  2. Remove the panel cover – you should be able to see the reset button behind the insulation.
  3. Push the button. It has to click.
  4. Put the panel cover back in place.
  5. Your unit has been reset. At this point, some of the error codes might disappear, as a simple reset can fix quite a few different problems. 

Rheem Main Remote Control UMC-117 Beeping 12

Error code 12 indicates flame failure. The chances are high that there is either a gas supply issue or the flame sensing rods are dirty

Rheem Main Remote Control UMC-117 Won’t Turn On

Remove the remote control and check the wires in the back – they should all be properly connected. Turn off the power to the device, wait for a few minutes, and turn the power back on.

If that did not resolve the issue, you can try unplugging the water heater, turning off the hot water that might be running, waiting for 10 minutes, and then plugging the unit back in.

In case the UMC still won’t turn on, you might have to replace it.

Read: Why Gas Water Heater Making A Humming Noise

How Do You Reset a Rheem Gas Water Heater?

With a gas water heater, you can try switching the gas valve to the ‘off’ position, waiting for 5-10 seconds, and then flipping the switch back to ‘on’. In the majority of cases, this will make the system reset. 

How Do I Reset My Tankless Water Heater?

  1. Turn the hot water off, if it has been running.
  2. Turn the remote control off as well.
  3. Give the system around 5 minutes.
  4. Turn the unit back on and open the hot-water faucet. 

How Do You Troubleshoot a Rheem Electric Water Heater?

Before troubleshooting the unit, make sure to shut off the power to the water heater at the circuit breaker, if you are planning on inspecting the inside components.

  1. Check the power supply to the unit – reset the breaker, replace a blown fuse (if there is one), and ensure that the switch is in the ‘on’ position.
  2. Make sure that the thermostat settings are correct.
  3. Reset the unit by pressing the reset button (remove the metal panel on the tank and search under the insulation).
  4. Drain the water tank.

How Do You Clean the Flame Rod on a Rheem Tankless Water Heater?

You might want to remove and clean the whole burner assembly. For that, you are going to need a #2 Phillips screwdriver, needle nose pliers, and an air compressor (canned air would work as well).

Before proceeding, don’t forget to turn off the remote and disconnect the power to the unit. Make sure that the gas and water supply are turned off as well.

Why Does My Rheem Tankless Water Heater Keep Shutting Off?

The things that can be causing your unit to shut off include:

  • A loose wire
  • An issue with the water, gas, or electricity supply
  • A clogged filter
  • A low water flow rate (some water heaters have a minimum flow rate requirement; if it’s not reached, then the unit won’t turn on)