How to Repair a Dehumidifier That Won't Collect Water

If your dehumidifier is not collecting water even though the room temperature is over 65 degrees Fahrenheit, there may be an issue with the capacitor in the compressor circuit. The compressor circulates refrigerant through the unit to remove moisture from the air, which collects in the bucket. If the capacitor fails, the compressor will not run. Signs that the capacitor is defective are that the overload device continually trips. A trained technician can perform a test to determine if the capacitor is faulty.

If your dehumidifier is not collecting water even though the room temperature is over 65 degrees Fahrenheit, it likely means that the dehumidifier compressor is not working. This part can fail for a number of reasons, one of which is that the overload device has failed. The overload is a component of the compressor which keeps the motor from becoming damaged. If the overload is not working, the compressor won’t work, meaning no water is being collected. The overload can be tested for continuity using a multi-meter. This part commonly fails when the unit is powered by extension cords which are too long or too small for the unit.

If your dehumidifier is not collecting water even though the room temperature is over 65 degrees Fahrenheit, there may be a problem with the fan motor. The fan motor keeps the air flowing across the evaporator coils to keep them from icing up. To troubleshoot this dehumidifier part, check to see if there is air coming through the grille. If there is no air blowing or very little, inspect the fan cover and evaporator coils to make sure they aren’t blocked by dust and debris. Check to make sure the fan is able to rotate easily and that the blower wheel is securely attached to the motor shaft. Sometimes the fan motor will rotate slowly, or hum but not rotate at all, meaning it needs to be replaced. To observe the fan, you can operate the unit in fan only mode, but be very careful while doing this.

If your dehumidifier is not collecting water even though the room temperature is over 65 degrees Fahrenheit, the electronic control board or PCB assembly may not be properly controlling the compressor and fan motor. The control board is a part on modern dehumidifiers, and uses sensors to monitor the ambient humidity and signal the compressor to start. To troubleshoot this part, you can perform a voltage test on the output relays with a multi-meter to make sure the relays and sensors are working.