Aprilaire Dehumidifier Error Codes
Aprilaire makes some of the best whole-home dehumidifier units out there on the market today. But sometimes things go wrong with the unit and require your attention. Most of these problems are benign, and with the right know how can be resolved quickly. Others, are more serious and might need the attention of a professional. To help you maintenance your Aprilaire E-Series Dehumidifier, we’ve put together this list of the various diagnostic codes. Learn about the Aprilaire E070.
Note: some of these error codes require knowledge or skill in electrical work and are not something you should undertake if you’re not completely comfortable or experienced with this kind of work. In these cases we recommend that you call a professional to come and perform the maintenance or repair work for you.
If you see the code ‘E1’ this means that the central computer of the dehumidifier is not receiving a good signal from the temperature / RH sensor. If the unit cannot get a signal, it has no way of knowing how warm or cool it is in the space.
Here’s a useful set of instructions on what steps to take when you get this code [link].
The code ‘E2’ means that the temperature of the discharge line is more than 190 degrees Fahrenheit. Usually this problem arises when the temperature of the air going into the inlet exceeds 100 degrees Fahrenheit (in other words the air is too warm to begin with) or insufficient airflow going through the dehumidifier. This issue usually corrects itself, but if you still see this error after five consecutive compressor restarts, it’s time to take action.
Here’s a useful set of instructions on what steps to take when you get this code [link].
According to information from the manufacturer, if you see the code ‘E3’ that means that the ‘model 76 control’ has stopped communicating with your dehumidifier. If this is the case, the fix may require some electrical work. If you’re handy with that sort of thing, you can find the full instructions here [link], otherwise we recommend you call a professional to perform the maintenance. Dehumidifiers involve high voltages and it’s not really a DIY task you should undertake if you don’t feel completely comfortable.
Unfortunately this is not a very descriptive error code. Capacity of what? According to the manufacturer’s literature, this error code can happen when the dehumidifier is transferred from a place with cold air to a place with warm air. If that’s the case, wait an hour and then check again. If the error code is still there after re-checking in an hour, it’s time to consider troubleshooting.
When you see either E5 or E6 it means that the signal to the high temperature or low temperature sensor is shorted. According to the literature from the manufacturer, this error can arise due to a loose connection on one of the circuit boards, or a failed sensor. This fix does involve electrical tasks so if you are comfortable with that, see the instructions here [linked]. If not, call a pro (us?) to come and fix it for you. Of course, if you’re a part of our dehumidifier service program these kinds of fixes are included.
This error code E7 means that a float switch has been triggered or opened by water accumulation in a drain pan of the unit. Follow the instructions in the literature from the manufacturer [link] to remedy this issue. And if you don’t feel comfortable working with electrical equipment – leave it to the professionals!
This error means that the temperature of the air is below 50 degrees F or above 104 degrees F. Or, it could mean that the dew point is lower than 40 degrees F. This error most likely is happening because you have installed the dehumidifier in a space that experiences temperature extremes. The dehumidifier unit has an operating temperature range and if the temperature falls out of this range then bad things can happen. So it’s a good idea to keep the unit in a space where the temperature is not too cold or too hot. If you’re getting this error, it might be time to think about moving the unit to a different space. If it’s too hot for your unit, then move the unit into a cooler spot. If it’s too cold, maybe you can move the unit higher up where the air is warmer.
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This error means that the temperature registered on the outdoor temperature sensor is out of range. You should only get this error if you have enabled the ventilation feature. Aside from actual cases in which the temperature is indeed out of range, the other reason why this error might happen is a failed sensor or a loose connection. Here are the instructions for remedying this issue [link].
We hope this guide helped to inform you of the different error codes you may encounter over the life of your Aprilaire. Again, some of these errors require serious fixes that involve electrical work, and electricity can be dangerous if you don’t know what you’re doing. In these cases you should call a professional to come and fix your dehumidifier for you.
And just a final reminder, if you have an Aprilaire dehumidifier (which we sell on our DIY store by the way) you can enroll in our maintenance service program and get regular maintenance as well as help whenever errors like this arise so you don’t even have to go down into the crawl space or basement!
Contact us if you need help fixing your crawl space, basement, attic, duct-work, or yard drainage by clicking here.
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