Error E72. Italtherm gas boiler. How to fix?

Owning an Italtherm gas boiler may occasionally result in different error codes. E72 is one such error. When the E72 error code appears on your boiler, there is a problem that needs to be fixed right away to keep your heating system functioning properly.

Your Italtherm gas boiler’s E72 error usually indicates an ignition issue. There are a number of possible causes for this, including malfunctioning gas valves, defective ignition electrodes, and problems with the gas supply.

Even though the E72 error code can be unsettling, there are a few things you can do on your own to diagnose and resolve the problem before getting in touch with an expert. We’ll lead you through the process of locating the issue and finding a workable solution in this guide.

You can quickly fix the E72 error on your Italtherm gas boiler and get your home heating efficiently again by following these troubleshooting steps. However, it’s always best to get help from a qualified heating engineer if you can’t resolve the problem on your own.

Detecting the problem

Every system that is a part of the heating equipment is typically given a set of unique codes. You can identify the specific type of malfunction that has occurred in a given system with their assistance. Specifically, the Italterm boiler error code "E72" denotes a problem with one of the parts that makes up the smoke exhaust path. Apart from the code "E72", an issue with the smoke exhaust system may also be indicated by the code "E3". Further diagnostic testing on the Italtherm boiler is therefore required.

Take note! Remember to disconnect the boiler entirely before beginning any repairs. To complete this, you’ll need:

Utilizing the start and stop keys, turn off the boiler;

Cut the power source off from the mains;

Turn the gas cock all the way to the stop to stop the gas flow.

You can begin dismantling the heating equipment casing after you have fully disconnected the boiler from the gas and electricity supply.

Disassembly of case parts

As we have already determined, a malfunction in the smoke exhaust system is the root cause of the Italterm gas boiler with interlocking "E72" malfunction. This means that the combustion chamber inside the boiler body needs to be thoroughly inspected. In order to accomplish this, we must partially disassemble the body, specifically the decorative panel and the flap that divides the combustion chamber from the exterior of the heating apparatus.

Step 1: removing the decorative panel from the Italtherm boiler drum

You just need one tool, which is most likely already in your home, to remove the boiler’s outer casing. A Phillips screwdriver is involved.

We then recommend that you take a close look at your boiler’s outer panel, which is secured by a few self-tapping screws that are found in the lower portion of the appliance. Here’s where having a screwdriver handy is helpful. Once both self-tapping screws have been undone with its assistance, turn your attention to the upper portion of the decorative casing. The front panel is secured in place vertically by a screw. It must be unscrewed by hand. It is situated exactly in the middle of the boiler’s front side.

After performing these easy adjustments, grasp the outer shell at the sides’ bottoms. After that, try to raise the structure by carefully separating the panels without applying any pressure. Following that, it will be simple to remove the boiler’s front cover.

You will see the control panel once the heating boiler’s front panel has been successfully disassembled. We suggest you to lower the control panel because we will need to work with the combustion chamber during additional smoke exhaust system troubleshooting. The following is the action plan:

• unscrew the self-tapping screw that holds the control panel in vertical position, using a screwdriver;
• pull the control panel upwards and gently lower it, pointing towards yourself.

We open the combustion chamber of the boiler

You can move on to the next stage of the housing disassembly after you have finished all the tasks that need to be done with the control panel. We have to take off the flap that covers the combustion chamber so we can give it a thorough inspection.

If you examine closely, you will see that self-tapping screws are used to secure the protective cover to the boiler body. There are six total, three in the flap’s upper section and three in its lower section. Each self-tapping screw holding the lid on needs to be undone. Next, using the front cover as an example, remove the flap from the bottom and gently point it in your direction. Following that, you can simply take it out of the way to allow access to the combustion chamber.

Determining the cause of the Italtherm boiler error

Following our partial disassembly of the Italtherm heating boiler’s body, you and I will need to perform a diagnostic examination on the operation of the pressostat and the fan. How well the pressostat and fan are turned on is something we are interested in. In order to accomplish this, we must briefly put the boiler back in an active state by connecting it to the power supply network.

Pressostat for gas boiler. It is situated inside the boiler on the top cover.

The algorithms used to turn on the heating apparatus are altered in the event of error "E72." Generally speaking, the board always briefly activates the fan to verify pressostat operation when the boiler is connected to the power source. You will see that the fan does not turn on in this situation. As a result, it is possible to temporarily disconnect the power supply once more.

Testing the pressostat’s functionality will be the next step in our diagnostic process. We’ll need a multimeter that is configured to test electrical circuits for this purpose. After that, you should follow these steps.

• disconnect the pressostat connectors;
• Use a multimeter to check the state of the pressostat contacts.

Please take note that the contacts must be in the open position when there is no power supply. You will learn that the pressostat contacts are closed if the error "E72" is present. This means that the pressostat needs to be replaced because it is sticking.

Don’t panic if your Italtherm gas boiler is displaying Error E72. Usually, this error signifies a problem with the flame detection or ignition system. Try turning off your boiler, waiting a few minutes, and then turning it back on to reset it as a first step in fixing the problem. Examine the ignition electrodes for damage or debris and clean them if needed if the error continues. Make sure the flame sensor is clean and in the proper position, and that the boiler’s gas supply is continuous. Seek the advice of a qualified technician if you’re not sure how to resolve the problem on your own.

Pressostat replacement: algorithm of actions

We must disassemble a malfunctioning pressostat before we can replace it. To accomplish this, you must take the following actions:

• Disconnect the pipe that connects the pressostat to the fan;
• unscrew the two screws that are used to fix the pressostat in the upper part of the combustion chamber;
• remove the old pressostat from the combustion chamber.

The next task is to install a fresh pressostat. This is carried out in accordance with the plan in reverse order from its previous disassembly:

• fix the pressostat in the upper part of the combustion chamber;
• screw in two self-tapping screws;
• put the spigots back in place and connect the two connectors.

It is advisable to perform a final diagnostic on the heating equipment’s serviceability after installing the new pressostat. Mechanism of action:

• Connect the heating boiler to an electrical source;
• open the gas tap;
• press the start key;
• set the equipment to winter mode.

The fan will activate and the burner will ignite as soon as the boiler is turned on if everything was done in accordance with our instructions. A corresponding icon on the display will illuminate to indicate this. Consequently, your boiler is operating normally because the pressostat is malfunctioning.

Don’t panic if your Italtherm gas boiler is displaying error E72. This error typically denotes a flaw in the flame detection system, gas supply, or ignition. There are a few actions you can take to troubleshoot and resolve the problem, even though it can be frustrating.

Try resetting your boiler first. This can frequently clear the error code and restart your boiler. This can be accomplished by first turning off the boiler’s electricity for a short while, then turning it back on. If the problem continues, you might need to make sure the boiler’s gas supply is turned on and supplying gas in the right way.

If there’s no problem with the gas supply, you might need to clean or replace the flame sensor or ignition system in the boiler. These parts are susceptible to dirt accumulation or damage over time, which can interfere with the boiler’s ability to ignite. The error E72 may be fixed by cleaning or replacing them in accordance with the manufacturer’s instructions.

It’s best to get help from a qualified heating engineer if you don’t feel confident troubleshooting and fixing the issue yourself. Their expertise and experience will enable them to identify the issue and carry out a prompt, safe repair, restoring the optimal operation of your boiler.

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