Question 1

it smells musty, like a locker room, when it runs. i cleaned the filter but it didn't help.

Accepted Answer

DIAGNOSIS The smell isn't from the filter—it's from mold and mildew growing on the cold, wet evaporator coils inside the unit. That's where all the moisture condenses, and if spores are present, they'll thrive there. FIX You need to clean the coils. Unplug the unit and let it sit for a day so everything dries out. Remove the front grille and filter. Using a spray bottle, mist the coils (the finned radiator-looking part behind the filter) with a 50/50 mix of white vinegar and water. Let it sit for 15-20 minutes to kill the mold. Then, gently rinse the coils with a light spray of clean water from a spray bottle (don't soak the electronics). Let it air dry completely for 24 hours before plugging it back in. IF THAT DIDN'T WORK If the smell persists, the mold might be in the drain pan underneath the coils, which you can't see without disassembly. In that case, using a dehumidifier cleaner foam (like what's made for AC coils) can help reach those areas. HEADS UP Never use bleach or harsh chemicals on the coils—they can corrode the aluminum fins. Vinewater is safe and effective. Running the unit on a higher fan speed in a drier space can help prevent the smell from coming back by keeping the coils drier between cycles.

Question 2

i just got this and it won't turn on at all, no lights, no fan, nothing. checked the outlet and it's fine.

Accepted Answer

DIAGNOSIS Total power failure points to either a blown thermal fuse on the control board or a failed power supply component. This can happen from a power surge or if the unit overheated internally. FIX First, verify the obvious: Is the power cord fully plugged into the back of the dehumidifier itself? On this model, the cord is detachable. Unplug it from the wall, pull the cord out of the socket on the back of the unit, and firmly re-seat it. Then plug the wall end back in. Sometimes that connection gets loose in shipping. IF THAT DIDN'T WORK If it's still dead, the internal thermal fuse (a small, usually white component on the main control board) has likely blown. This is a one-time safety device that cuts power if the board overheats. Replacing it requires soldering and opening the electronics cover—not a simple fix. HEADS UP Because this is a new unit, don't start taking it apart. This is a warranty issue. Contact Frigidaire support immediately. A brand-new unit with no power at all is a defect they should handle.

Question 3

the bucket is full light won't turn off even after i empty it and click it back in place.

Accepted Answer

DIAGNOSIS The float switch in the bucket housing is either stuck in the 'up' position or the sensor that detects the bucket is misaligned. Dirt, debris, or a slightly warped bucket can cause this. FIX Unplug the unit. Pull the bucket out completely. Look inside the empty bucket compartment—you'll see a small, usually white, plastic float on a hinge at the back. Manually move it up and down a few times. Feel for any grit or obstruction. Use a can of compressed air to blow out any dust around the float and its chamber. Reinsert the bucket firmly until you hear a solid click. IF THAT DIDN'T WORK Check the bucket itself. Look at the bottom where it interacts with the float. Make sure it's not cracked or warped. Also, ensure the bucket is sitting perfectly level on the floor; if the unit is on an uneven surface, the bucket can sit crooked and not depress the float fully. HEADS UP Never try to bypass or tape down the float switch to run the unit continuously. That's how you end up with 70 pints of water on your floor when the internal overflow pan fills up.

Question 4

how do i clean the filter on this thing? the manual is long gone and it seems stuck.

Accepted Answer

DIAGNOSIS The air filter on the FFAD7033R1 is a simple foam panel behind the front grille. It gets clogged with dust and can get wedged in there if it hasn't been cleaned in a while. FIX Unplug the unit. Look at the front grille—there are two plastic tabs on the top-back edge. Press them inward (toward the center of the unit) and pull the entire front grille toward you. It should hinge open. The foam filter is right there. Gently pull it out. Rinse it under lukewarm water until the water runs clear, squeeze out excess water (don't wring it), and let it air dry completely before putting it back. IF THAT DIDN'T WORK If the grille still won't budge, check if there's a buildup of dust or mold along the bottom edge acting like glue. Use a flat plastic tool (like a guitar pick) to gently pry along the seam, being careful not to snap the plastic tabs. HEADS UP Never run the dehumidifier without the filter. It'll coat the evaporator coils in dust incredibly fast, which kills efficiency and can lead to the 'freezing up/no water' problem. Also, make sure the filter is bone-dry before reinserting it to prevent mold.

Question 5

the fan on my frigidaire dehumidifier is running but the compressor won't kick on, just hums for a sec then stops.

Accepted Answer

DIAGNOSIS That's a classic compressor start failure. The compressor is trying to start but can't get going, so the overload protector trips after a brief hum. The most common cause on this model is a failed start capacitor. FIX Unplug the unit. The start capacitor is a small, usually black cylindrical component mounted near the compressor. You'll need to remove the rear service panel to access it. Visually inspect it for bulging, leaking oil, or a burnt smell. Replacing this capacitor is a standard repair; you need a 15µF, 370VAC capacitor (or the exact match from the old part). IF THAT DIDN'T WORK If the new capacitor doesn't fix it, the compressor's internal start components or the relay might be shot. At that point, the repair cost often approaches the price of a new unit. HEADS UP Capacitors can hold a dangerous charge even when unplugged. If you're not comfortable safely discharging it with an insulated screwdriver, call an appliance repair tech. This isn't a plug-and-play fix for beginners.

Question 6

my 70-pint frigidaire dehumidifier is running constantly but the bucket is barely collecting any water, what gives?

Accepted Answer

DIAGNOSIS Yeah, this one's common. The unit is likely stuck in a defrost cycle. The coils are freezing over because it's running in a cooler space (like a basement below 65°F), so it has to keep melting the ice instead of pulling moisture from the air. FIX Check the room temperature first. If it's below 65°F (18°C), that's your culprit. The compressor can't operate efficiently in the cold. Move the unit to a warmer room if possible. If you can't move it, try raising the basement's ambient temperature slightly with a space heater near the intake. IF THAT DIDN'T WORK If the room is plenty warm and it's still not collecting, the real issue might be a low refrigerant charge. Listen for a hissing sound—that's a sign of a leak. Unfortunately, that's not a user-serviceable fix and requires a professional technician. HEADS UP This model doesn't have a true 'pump out' continuous drain option—it uses gravity. Make sure your drain hose, if attached, doesn't have any kinks or upward loops that are creating an airlock and preventing flow.

Question 7

my frigidaire ffad7033r1 just shows a flashing 'ef' on the display and won't start, what's that?

Accepted Answer

DIAGNOSIS That's the 'EF' error code, which stands for 'Electronic Failure' or 'Electronic Fault'. It's usually triggered by a glitch in the communication between the main control board and the humidistat sensor. FIX First, unplug the unit from the wall for a full 5 minutes. This is a hard reset that clears the control board's memory. After 5 minutes, plug it back in. The 'EF' code should be gone, and you can set your desired humidity level again. This fixes it 90% of the time. IF THAT DIDN'T WORK If 'EF' comes back immediately or after a short run, the humidistat sensor itself might be faulty or have a loose connection. On this model, the sensor is built into the main control board assembly. You'd need to open the case to check connections, but the likely permanent fix is replacing the main control board. HEADS UP Don't just flip the power switch off and on on the unit itself—that's not a full reset. You have to physically unplug it from the outlet for the full time to drain the capacitors on the board.

Frigidaire FFAD7033R1 70-Pint Dehumidifier

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