Rheem Water Heater Failed Ignition Lockout [7 Easy Solutions]

The rheem water heater failed ignition lockout is a big problem for you if you are a Rheem water heater owner. Your Rheem water heater may show 6 1 or 6 5 flashes and the water heater may not work. In this article, we will discuss 7 reasons and solutions to this problem. 

The problems are bad ignition control module, faulty thermocouple, broken ignitor, clogged or faulty gas valve, carbon buildup on the spark electrode, clogged blower or inducer, and dirty fire sensor. We are announcing that the reasons and solutions discussed in this article will help you to solve the water heater failed ignition lockout problem. So, without wasting any time, let’s begin.

Rheem Water Heater Failed Ignition Lockout [7 Easy Solutions]

Several problems can happen with your Rheem water heater and this problem is a big problem among them. There are many reasons behind this problem but we will discuss the most common 7 reasons and their solutions here. To know the details check the below guide.

1. Bad Ignition Control Module

For a bad ignition control module, your Rheem water heater system won’t relight after the tank cools. It will only relight when you reset it. As the integrity of the ignition control module starts to fall, its function becomes inconsistent and less and less regular.

Solution:

In this case, you need to replace the ignition control module to solve the problem.

2. Faulty Thermocouple

Sometimes, if you unplug your Rheem water heater for five minutes, the fan kicks in, and then the igniter fires up. Then, after some minutes or less the flame kicks out for some time and then the igniter ignites the flame again and the cycle persists. 

This problem happens for a faulty thermocouple. The thermocouple sends a millivolt signal to keep the gas valve open but turns it off when it cools or if anything bad happens with the igniter to avert fires.

Solution:

To solve this problem, you need to replace the thermocouple. It is not very expensive and you can get it from your local Rheem dealer.

3. Broken Ignitor

For a broken ignitor, your Rheem water heater can respond with a failed ignition lockout water heater. It will also show the 6 5 flashes with a three seconds pause.

Solution:

In this case, you need to replace the ignitor to solve the problem.

4. Clogged Or Faulty Gas Valve

If you have a clogged or faulty gas valve, then the water heater failed ignition lockout problem will occur. As a result, your Rheem water heater may not work.

Solution:

In both cases of a clogged gas valve and faulty gas valve, you need to replace the gas valve to solve the problem.

5. Carbon Buildup On The Spark Electrode

Sometimes there can be a carbon buildup on the spark electrode. As a result, the rheem water heater failed trial for ignition problem will happen. Your Rheem water heater will also show 6 1 flash and might not work.

Solution:

To solve this problem, you need to clean the spark electrode and the pilot hood with steel wool.

6. Clogged Blower Or Inducer

There is a pressure switch on the Rheem water heater to ensure the blower or inducer is working correctly. Sometimes either the pressure switch, the hose feeding it, or the blower or the inducer can be clogged, causing the Rheem water heater to go into failed ignition lockout mode.

Solution:

To solve this problem, you need to replace the blower or the inducer. If still, the problem isn’t solved then you can try replacing the pressure switch.

7. Dirty Fire Sensor

Sometimes, the fire sensor or the fire rod can get dirty and can’t get hot enough to tell the water heater system that fire is present. The temperature compensating valve will shut down for a security reason which is not to spill gas out. As a result, the Rheem water heater will light sometimes but go out after some minutes.

Solution:

Firstly, check into the burner area to find the fire sensor. Generally, it is held by one screw and one wire. Now, disconnect the screw and wire. Then, take out the fire sensor. After that, you need to clean it with a very fine grid of Emory cloth. You don’t require to overclean it. Finally, reinstall the fire sensor to solve the problem.

FAQ

How To Solve Honeywell Water Heater Failed Ignition Lockout Problem?

To solve the honeywell water heater failed ignition lockout problem, you need to ensure that the gas pressure, pressure supply and voltage supply on the Honeywell water heater are sufficient. In addition, you need to also replace the pilot assembly of the Honeywell water heater to solve the problem.

How to Reset The Vapor Switch On The Rheem Water Heater?

Firstly, take away any flammable products from your Rheem water heater’s place that may trigger the rheem vapor sensor. Now, you need to move your Rheem water heater’s gas valve switch to the “OFF” position. Then, wait for some seconds. Finally, turn the switch to the “ON” position to reset the vapor sensor witch.

What Are The Causes Of Furnace Ignition Lockout?

There are many reasons for furnaces to go into ignition lockout. Maximum times faulty flame sensors, and damaged ignitor are the most common reasons for this problem. Another common reason is an unclean filter that might cause the limit switch to trip by decreasing the airflow and causing this problem.

How To Change A Thermostat On A Rheem Water Heater?

Firstly, you need to turn off the gas supply to the water heater. Then, you need to disjoint the gas line and thermocouple from the front of the water heater at the thermostat using a pipe wrench. Finally, you need to install the new thermostat on the water heater and stiffen it with a pipe wrench. You need to ensure that it is lined up with the burner fittings.

Why does my hot water heater go into vacation mode?

Water heater vacation mode means that the heater settings are lower compared to the regular settings a heater works. Leaving your water heater on vacation mode makes sure that the water heater doesn’t waste energy when nobody is using the water heater. It conserves energy and decreases energy bills.

Conclusion

The rheem water heater failed ignition lockout problem generally has many more reasons than other problems of the Rheem water heater. So, it can be considered a big problem. To solve this big problem, we have discussed 7 reasons and solutions to this problem.

We are hopeful that this article will help you to solve the water heater failed ignition lockout problem easily, without getting professional help. Nevertheless, if still this issue isn’t solved, then let us know in the comment box. We will try to solve the problem as soon as possible.

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