What causes an error code on a tankless water heater?

Most tankless water heaters are equipped with a diagnostic system that incorporate the microprocessor and LCD screen, which displays an error code if the problem occurs. An error code can appear due to many reasons, from a simple spider web and air/exhaust blockage to more serious gas or exhaust leak.

What does fault code 11 mean on a Bosch tankless water heater?

Bosh fault code 11 – Indicates a problem with the tankless water heater’s ignition. Typically, if you receive this fault code, your unit will not work. Before calling a licensed plumber, check to make sure your gas valve is open and supplying gas to the unit. Bosch fault code 29 – Indicates a possible clog in the unit’s neutralizer.

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.

What does error code 00 on Rheem water heater mean?

As with other brands, Rheem tankless water heaters display error codes to indicate specific malfunctions. Rheem fault code 00 – Indicates 1-hour continuous combustion. To correct this code, close all hot water taps to reset the unit. Turn off or remove circulation pumps. Rheem fault code 05 – Indicates imperfect combustion.

How do you reset a Tankless gas water heater?

Locate the red reset button. There should be a red button in the center of the control panel. Press the button firmly. The reset button can sometimes be sticky, especially if you haven’t reset the heater in a while. Wait to hear the button click. Moreover, how do I reset my Eemax tankless water heater?

Are there any problems with my tankless water heater?

Where do I find error codes on my Rheem water heater?

Rheem water heater error codes are pretty easy to understand. They’re generally displayed on the unit itself, on the screen. However, some models require you to install an app on your phone where you’ll receive the updates. Consult your owner’s manual for exact directions on where you need to look.

Are there any problems with my Bosch tankless water heater?

If you are the owner of a “smart” tankless water heater from Rinnai, Noritz, Paloma, Bosch, Takagi or similar, this troubleshooting guide is for you. The guide deals with the most common problems and explains some of the error codes.

When to upgrade to a tankless water heater?

However, if your tankless water heater frequently becomes overloaded, you should consider either upgrading to a tankless water heater with a higher capacity or adding a second unit.

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.

What should the water temp be on a Takagi Water Heater?

In most circumstances, the heater should be set to its default of 122°F. Hard Water Problems: In areas where the water is very hard with high levels of calcium and magnesium (about 7+ grains per gallon on residential application), Takagi recommends that the water be treated with a water softener or some other de-scaling device.

What does error code 12 mean on Takagi Water Heater?

As you saw in the Takagi water heater error codes in the table in this article, error 12 = a flame loss. That can be a problem with fuel, igniter, fuel valve, piping, burner adjustment, cleaning, combustion air supply etc. keep me posted. I get error code 12 on my TK-4 IN.

What’s the wrong DIP switch on a Takagi Water Heater?

Takagi T-H3-DV/OS, T-H3J-DV/OS, T-H3S-DV/OS CONDENSING WATER HEATER SERVICE GUIDE [PDF] (2016) Takagi water heater models 240, 340, 540 indoor & outdoor models. Wrong dip switch setting Red LED / Computer Board Fault Wrong dip switch setting, possibly LP gas set when the fuel is Natural gas, or vice versa

Is there an error code on my water heater?

If no your water heater model is not listed in the right-hand column then the error code on this table row may not apply. See the water heater manual or troubleshooting manual for your specific water heater model for expanded detail about the meaning and the corrective steps for each of these error codes.

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

Get FREE Estimates! Error codes are the indicators of the problems inside the water heater. When the error code appears on the Bosch heater’s LCD display, the reset button sometimes leads to an error removal, but if it doesn’t work, the instructions below might help troubleshoot the problem:

What happens when you turn off the second water heater?

SERIES In series, the water comes in to the first water heater, then passes through the second hot water heater, and finally goes to your fixtures. If you turn off the second water heater, then the water in the second one cools down between uses. This results in very long warmup times.

Can a gas water heater be a code violation?

Most items in this list apply to conventional gas water heaters, but electric water heaters are also common. The hazards of gas, venting, and combustion air are eliminated with electric appliances, but there is still one common violation to be found.

What causes an error code on a tankless water heater?