Question 1

installed an e130 but it seems to short cycle, runs for like 5 minutes and shuts off over and over

Accepted Answer

DIAGNOSIS The unit is satisfying its internal humidistat too quickly. This is almost always because the wall control's sensing location is poor or the dehumidifier's own internal sensor is getting a false reading. FIX Relocate the wall humidistat. It should not be mounted near a supply air vent, in a hallway, or near the dehumidifier itself. Choose a representative room (like a central living area) on an interior wall. Rerun the low-voltage wire to the new location. Set the humidistat 2-3% higher than your desired level to account for the lag time of conditioning the whole house. IF THAT DIDN'T WORK The E130 has an onboard sensor for its "Auto" mode. If you're using that mode, the unit may be reading duct conditions. Switch to controlling it solely with the wall humidistat (set wall control to "ON" and adjust setpoint there). HEADS UP Short cycling kills efficiency and wears out the compressor. If the unit is oversized for your space (rare with whole-home), you may need to adjust the fan cycle settings via dip switches on the board—consult the installer guide for this advanced step.

Question 2

how do i clean this thing? the manual is vague and i don't want to break it

Accepted Answer

DIAGNOSIS Annual cleaning of two key components is mandatory for efficiency and to prevent errors: the air filter and the condenser coil. FIX Clean the condenser coil. This has the biggest impact. Turn off power at the breaker. Remove the front service panel. Use a vacuum with a soft brush attachment to remove surface dust from the aluminum fins of the condenser coil (the one with the thinner fins). For heavy dirt, apply a non-acidic, no-rinse coil foam cleaner. Let it sit and foam, then wipe away. Vacuum or wash the reusable air filter and let it dry completely before reinstalling. IF THAT DIDN'T WORK If performance is still poor after cleaning, check the evaporator coil (the colder, bulkier coil) for a mat of dust. It's harder to access but can be carefully vacuumed. HEADS UP Never use a metal brush or high-pressure water on the coils—you'll bend the fins and ruin airflow. The evaporator coil gets wet during operation, so it's mostly self-cleaning. Focus 90% of your effort on the condenser coil.

Question 3

there's a rattling or vibrating noise coming from inside the cabinet when the fan runs

Accepted Answer

DIAGNOSIS Loose components or a failing fan motor/bearing. The most common source is the blower wheel coming loose on its shaft or having debris stuck in it. FIX Secure the blower wheel. Power off at the breaker. Remove the service panel to access the blower assembly. Check the set screw on the blower wheel hub where it attaches to the motor shaft. Tighten it firmly. Spin the wheel by hand to check for debris (like a stray screw) and listen for grinding. IF THAT DIDN'T WORK The noise may be from the condenser fan (the one near the compressor). Its blade could be cracked or hitting the shroud. Inspect it for damage and ensure its mounting is tight. HEADS UP If the noise is a high-pitched whine or screech, it's likely a dry motor bearing. The motor will need lubrication or replacement soon. Don't ignore rattling—a loose blower wheel can eventually damage the motor shaft.

Question 4

my e130 is running constantly but the humidity in the house isn't going down at all

Accepted Answer

DIAGNOSIS The unit is operating but not removing moisture. Most likely a refrigerant leak (system is low on charge) or the evaporator coil is frozen solid from low airflow. FIX Check for a frozen coil first. Turn the unit off. Remove the panel and inspect the larger copper coil (evaporator). If it's iced over, you have an airflow problem. Replace or clean the air filter. Ensure all duct dampers are open and the blower is running. Let the ice melt completely (may take hours) before restarting. IF THAT DIDN'T WORK If the coil is cold and wet but not frozen, and airflow is good, the system is likely low on refrigerant. You'll see oily residue on the copper lines. This requires a licensed HVAC technician to find the leak, repair, and recharge. HEADS UP A constantly running unit that isn't working will rack up your energy bill for zero benefit. Don't let it run for days hoping it will catch up—diagnose immediately.

Question 5

the display works but the unit just won't turn on or start dehumidifying when it should

Accepted Answer

DIAGNOSIS The control board isn't getting the signal to run, usually due to a faulty wall humidistat, a miswired control, or a blown low-voltage fuse on the board. FIX Bypass the wall humidistat to test it. Turn off power. At the unit's control board, find the two low-voltage wires (typically labeled 1 and 2) from the humidistat. Disconnect them and temporarily twist the two board terminals together with a wire nut. Restore power. If the unit runs, the wall humidistat is faulty and needs replacement. IF THAT DIDN'T WORK Check the 3A or 5A automotive-style fuse on the control board. If it's blown, replace it with an identical fuse. If it blows again, there's a short circuit needing a pro. HEADS UP When bypassing the humidistat, the unit will run continuously. Don't leave it like this permanently—it's a diagnostic step only. Reconnect the proper control once diagnosed.

Question 6

water is leaking from the bottom of the dehumidifier onto my floor, not going down the drain

Accepted Answer

DIAGNOSIS The internal condensate drain pan is overflowing. The drain line is either clogged, disconnected, or not pitched correctly for gravity drainage. FIX Clear the primary 3/4" PVC drain line. Turn off the unit. Disconnect the drain line from the unit's drain port. Use a wet/dry vac on the line or flush it with water to clear any algae or debris. Reconnect, ensuring a continuous downward slope from unit to drain. IF THAT DIDN'T WORK Check the internal condensate pump (if equipped). Listen for a hum. If silent, the pump may have failed or its float switch is stuck. You'll need to access and inspect the pump assembly. HEADS UP Algae growth in the line is common. Consider using condensate tablets in the drain pan to prevent future clogs. Always check the drain line routing first—it's the culprit 80% of the time.

Question 7

i hear a loud humming or buzzing from my e130 but the fan isn't blowing, just sits there

Accepted Answer

DIAGNOSIS That's the compressor trying to start but failing, likely due to a failed start capacitor or a locked compressor. FIX Replace the start capacitor. It's a common failure point. Turn off power at the breaker. Locate the round or oval capacitor mounted near the compressor. Discharge it safely (short terminals with an insulated screwdriver). Note the wiring and microfarad (µF) rating, get an exact replacement, and install it. IF THAT DIDN'T WORK With power off, try manually turning the compressor fan shaft with a wrench. If it won't budge, the compressor is seized and the unit needs professional service or replacement. HEADS UP Never touch capacitor terminals with power on. A bulging or leaking capacitor is definitely bad. If the compressor is seized, continuing to try can damage other components.

Question 8

my aprilaire e130 just shows e1 on the display and won't run, what does that even mean?

Accepted Answer

DIAGNOSIS The E1 error is a high pressure cutout. The refrigerant pressure in the system is too high, usually from a dirty or blocked coil, a failed condenser fan, or low airflow. FIX Turn off the unit at the control and the breaker. The most common fix is cleaning the condenser coil. Remove the service panel to access the coil. Vacuum loose dust and debris from the coil fins. Use a soft brush and coil cleaner (non-acidic) to clean thoroughly. Rinse if directed. Ensure the area around the unit is clear and the filter is clean. Restore power. IF THAT DIDN'T WORK Check that the condenser fan is running when the unit tries to start. If it's silent, the fan motor or capacitor may have failed, causing the pressure to spike instantly. HEADS UP If you're not comfortable with electrical components, stop at cleaning. Diagnosing fan motors and capacitors requires a multimeter and should be done by a tech.

Aprilaire E130 Whole-Home Dehumidifier

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