Why do I get an error code on my tankless water heater?

Unplug the heater for 30 seconds and then plug it back in. If the error code persists, call a licensed contractor. This error code involves a breakdown in communication between two tankless water heaters using the Quick Connect Cord. It can occur when more than one remote is hooked up to handle two Quick-Connected units.

What to do if your tankless water heater has no hot water?

No hot water is one of the most common tankless water heater problems. The first things you should check are the electric power, water, and gas supply to the water heater. Check the shut-off valves, as they might be in the closed position.

Why is there a gap in my tankless water heater?

Although tankless water heaters are also called “instantaneous water heaters,” they still take time to heat water, so after the trapped water was used up, you were left with a gap of unheated water. The further your water has to travel from the water heater to its destination, the more noticeable the gap.

Why is my Noritz tankless water heater not working?

Installer Matt Carver stands next to the EZTR40 water heater. This indicates ignition failure in your tankless water heater. 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.

Why does my Rheem tankless water heater not turn on?

P1 signifies not enough water flow to turn on the unit. All tankless units have a minimum flow rate which must be achieved before the water heater will start heating water. Often, low-flow showerheads or fixtures cause the problem so the aerators inside should be removed.

Why is my navien tankless water heater not working?

#1. No water coming out although the tap was opened This is not usually what happened, but if there is no water coming out, then you should go check your pipe valves and water inlet filter. The power valves could be shut off earlier. Besides, the filter could also be clogged by dust or unusual stuff from the water supply.

Is there an error code on my navien tankless water heater?

If you have no hot water, you may have overwhelmed your tankless water heater’s capacity or have at least one error code. This guide will discuss and go over the Navien tankless water heater error codes, their meaning, troubleshooting, and more.

What does code 11 mean on a Noritz water heater?

Noritz Error Code 11 This indicates ignition failure in your tankless water heater. 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.

What is the plumbing code for electric water heaters?

502.1 General. Water heaters shall be installed in accordance with the manufacturer’s installation instructions. Oil-fired water heaters shall conform to the requirements of this code and the International Mechanical Code. Electric water heaters shall conform to the requirements of this code and provisions of NFPA 70.

Why is there an error code on my tankless water heater?

If you have no hot water, you may have exceeded your tankless water heater capacity or have at least one of the error codes below. However, an error message is displayed for a reason and should never be overlooked or ignored, especially if you don’t know its implications.

Why is my Noritz water heater error code 12?

Noritz error code 12 can be caused by low gas supply and airflow. Scale build-up on the igniter plug or loosely fitted igniter can also cause this problem. An error code 12 will be displayed on the remote controller on some models, while on the unit’s display window, an error code 121 or 122 will be displayed. Check the gas pressure.

What does error code 12 mean on Rinnai Water Heater?

What is Rinnai error code 12? An error code 12 found on the Rinnai tankless water heater means there is no flame, or a water heater didn’t recognize a flame in the combustion chamber. You can see diagnostic information on the control panel, where you set the temperature.

What does Rheem code 13 mean on a water heater?

Rheem error code 13 indicates a problem with the flame rod, which is typically accompanied by poor or improper combustion and found on indoor units. Inspect the condition of the flame rod and blower motor, the air intake, and exhaust vents.

How to troubleshoot ” C2 11 ” on a tankless?

Check the gas line. If air gets into the gas line, a “C2 11” or “C2 12” error code will display. Bleed the air from the gas line. Follow the procedure in Step 2. Check the power supply. If the power supply is not grounded, the error code will display. Make sure the heater is set up properly and follow the process in Step 2.

What does C2 11 mean on a Paloma tankless water heater?

The water is heated as it passes through the tankless water heater. Paloma’s tankless water heaters have a display screen that shows an error code shows an error code when a problem occurs. A common error code is a “C2 11,” which is related to the gas flow to the water heater.

Why do I get C2 11 on my water heater?

A common error code is a “C2 11,” which is related to the gas flow to the water heater. A number of troubleshooting steps can be taken to determine the cause of the problem.

What does a Rinnai error code 12 mean?

What Does a Rinnai Error Code 12 Mean? If you’re getting Rinnai error code 12 on your hot water unit, it indicates that a flame failure has occurred on the system. In this instance, your hot water unit has not recognised that there is a flame in the burner box.

Why do I get an error code on my Noritz water heater?

Although Noritz builds its water heaters to the highest standards, from time to time you might get an error code on your unit. “These codes can diagnose problems that otherwise might remain unnoticed until unit failure, thus saving on repair and replacement costs,” says Randy Oshiro, Assistant Manager of Engineering at Noritz.

What causes a code 73 error on a hot water heater?

Improper circuit board settings will cause a code 73 error. Changing a jumper connection or dip switch while power is supplied to the heater can trigger the problem, as can an improperly programmed circuit board. Unplug the heater for 30 seconds and then plug it back in. If the error code persists, call a licensed contractor.

What does an error code mean on a hot water heater?

The numerical error code will appear, and it will flash on display. Problems such as no hot water, not enough hot water, flame loss, water too hot or cold, temperature fluctuation, are just some of the issues that will be identified through the error codes.

Why does my water heater Flash code 12?

Ever since it was installed, I have encountered the dreaded Code 12 problem, where it periodically cuts out and stops producing hot water, beeps, and flashes a Code 12. It does not reset itself–I have to turn the hot water completely off, wait a moment, and then turn it on very slowly, to just a trickle to make it work again.

Why is there an error code 13 on my Rheem water heater?

When an Error Code 13displays on your Rheem tankless water heater, then it signalsimproper or faulty combustion within the flame rod. [Note: An Error Code 13 will only show up on your indoor Rheem tankless system.] Inspect if the air intake and exhaust emission is correctly installed and is in good working condition.

What does error code 00 mean on Rheem water heater?

Rheem error code 00 indicates that the unit has been working continuously for more than one hour. If your Rheem tankless water heater is showing an error code 00, it must be restarted. Close the hot water taps and remove or turn off the circulation pump if there’s any installed.

Why do I get an error code on my tankless water heater?