Solved: Three High Lennox iComfort Thermostat Error Codes

When one thing’s incorrect along with your HVAC system, one of many first locations to examine is your thermostat. Most fashions have a digital show that can show a particular numerical error code. This error code can be utilized to assist decide the issue and velocity up the troubleshooting and restore course of for HVAC methods like your furnace.

That is even less complicated with good thermostats just like the Lennox iComfort mannequin. Let’s evaluation three severe error codes—411, 225 and 31—to study what the issue is. We’ll additionally share what steps your technician will take to restore the issue, and the potential prices to take action.

Fixing Error Code 411

Error code 411 is an pressing precedence to resolve. You’ll see this error code seem when the out of doors unit’s low-pressure change malfunctions 5 instances or extra throughout one heating or cooling cycle. Since this error code contains the out of doors unit, it may be concerned along with your air conditioner. Every time the low-pressure change opens incorrectly, the error depend will increase. As soon as it passes 5 strikes, the thermostat instantly turns down the out of doors unit. That is known as a lockout and is a security function designed to reduce injury.

Fixing the Downside

A technician will examine the system cost utilizing a number of strategies, as the problem could also be with the change’s energy connections moderately than the low-pressure change by itself. As soon as the trigger has been uncovered, technicians will reset the out of doors unit by placing it in take a look at mode or by resetting low-voltage energy. As soon as the problem is resolved, the error code ought to routinely disappear.

Estimated Restore Price

Changing a low-pressure shutoff change can rely on the precise mannequin of your out of doors unit. Chances are you’ll anticipate to pay between $200 to greater than $600 relying on components and air-con restore prices. The shutoff change itself runs a mean of $30 to $150.

Clearing Error Code 225

Error code 225 is particular to your furnace, notably the high-pressure change. This change is a security element that releases excessive stress contained in the furnace, resembling when airflow is blocked. When this error code exhibits up, it means the stress change can’t shut. With out regular airflow and stress, the furnace received’t carry out as effectively.

Fixing the Downside

The technician will monitor the high-pressure change to guage the way it features. They’ll measure the stress whereas it [attempts|tries} to close during a heating cycle as well as its standard operating pressure. If they notice a problem, an obstruction impacting airflow is the most likely culprit. There are a few places to check, such as the vent and combustion air inducer. Technicians will check both these components as well as the condensate drain to locate the blockage.

Estimated Repair Cost

Because there are a few places to check before an obstruction can be found, labor costs should be considered when resolving error code 225. Ultimately, the final cost of this furnace repair will depend on where the problem is found as well as how long it takes the technician to identify the source.

Resolving Error Code 31

Seeing error code 31 on your thermostat means it hasn’t been able to communicate with your furnace for more than three minutes. Several components communicate with the thermostat, so you may see this error code when any of them malfunction or fail. Most of the time this can be traced back to an electrical problem, like damaged wiring or a loose connection.

Fixing the Problem

A technician can take a look at all the connections and wiring of the communicating components of your furnace. They should test voltages and wiring ohms as particularly high resistance can result in a disconnection. With a special tool called a multimeter, technicians can find out where the disruption originated from. Sometimes this is the furnace’s float switch, a component that shuts down the furnace when the condensate drain pan is flooded.

Estimated Repair Cost

With multiple potential causes, it may be difficult to determine the total repair costs of error code 31. Technicians will inspect the float switch to rule it out before thoroughly reviewing electrical wiring and connections. If the cause is damage or a failed component, replacement part costs should be included. You may expect to spend anywhere from $200 to more than $800 for higher-range models.