Fan always runs, speed doesnt change (low/high), setting humidity level doesnt impact...is this a control board or circuit board issue?
Fedder Model: A7DH45B2A
Unit is removing water fine, just never shuts off. I always hear the fan running. Even if I turn it off, only if unplugged does it stop, don't recall it doing this before. Hitting low/high fan speeds seems not to make a any difference. Setting humidity level higher than current room humidity does not turn unit off. Humidistat LED display seems accurately showing 55-60%. Seems compressor always runs...don't hear it clicking off at all when raising humidity..I recall the fan and everything would shut off if I raise the level greater than the room levels. My guess is the "control brains" are not telling the unit what to turn on/off and when. The buttons all beep and the displays all seem working...so is this a circuit board or control board issue?
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Re: Fan always runs, speed doesnt change (low/high),...
Verify the humidity reading with another device. Perhaps the humidity sensor is dirty or bad.
Another possibility is the switching device that runs the compressor and fan is shorted. If it's a mechanical relay, the contacts may have welded together, or if it's a solid-state relay, it's got a punch-through or meltdown in a device junction. My guess is it's a mechanical relay since you mention it used to click on and off and now you don't hear that. The relay may be on the control board, or it may be mounted separately - I don't have a photo or diagram of the inside of your model available.
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Depending on the time sequence you have this unit set to run, Fredrich's are designed so that the fan runs almost constantly, to keep the air moving. When it senses a rise in humidity above the level you have it set on, the compressor turns ON and runs until the level of humidity is lowered. This is especially true, if you are operating this unit in continual mode.
Hope this helps you and thanks for choosing FixYa.
Lyle, your particular model is designed for the fan to function constantly. However, the fan running doesn't mean the compressor is always running. The reason the unit was designed this way, is for the air to be continually moving, and when the humidity sensor picks up a rise in the humidity level (above where you have it set) the compressor will turn ON and extract that humidity.
Your unit is working as it should. Thanks for choosing FixYa.
If you are operating the dehumidifier in continual mode, this is normal, based on the humidity extraction level you have the unit set on. It senses when there is humidity to remove and speeds up. When it has reached the level you have set it for, it slows down and keeps the air circulating, until it senses a need to speed up, again.
Toni, this sounds like the humidity extraction level is set to high. Lower it to 32 - 35%. The fan is running in an effort to recirculate the air. If the unit senses a rise in humidity above the level you have it set on, the compressor will turn on to extract the rise in humidity. That's why I think your level is set to high.
Hope this helped you to troubleshoot and solve the problem.
don't know what the P1 code means, but maybe your demand of 50% and low fan is not able to be achieved so the unit will increase the CFMs (high speed on fan) to try and reach the 50% humidity level you are asking it to do within a certain time period.
Bryan, it may imply be a case of the humidity extraction level being set to high. Lower the level to 35% and see what happens. As far as the fan running is concerned. Most dehumidifiers are designed for the fan to run, even if the compressor doesn't turn ON. It's designed to keep the air circulating and if the humidity rises above the setting you have it on, the humidity sensor will pick up this change and turn the compressor ON.
Also, remove the air intake filter to see if it's clogged and needs cleaning. Maintain at least a minimum of 12" of free air space all around the dehumidifier. Poor air circulation will prevent the unit from working properly. As will, to low an ambient air tempeature. Most unit struggle to work at temperature between 40 & 60 degrees F.
Hope this helped you to troubleshoot and solve the problem. Please let me know. Thanks.
A couple of things may be happening: The humidity extraction level may be set to high and it can't extract any humidity at that level. Reset/Lower it to 35%. The fans on most dehumidifiers run almost constantly (designed that way) so that it keeps moving the air around. If the sensor picks up a higher humidity level than what it's set to maintain, the compressor will turn ON. This is particularly true, if you operate the unit in continual mode, rather than a timed mode. Also, a dirty or clogged air intake filter, hinders the units ability to remove humidity/moisture.
In addition, operating the unit is ambient air temperature of between 40 & 60 degrees F, causes the unit to struggle to dehumidify the air and the fan to run continuously. Obstructing the air flow around the unit, will also cause it to not function as it should. Maintain a minimum of 12" of free air space around all 4 sides of the unit.
Hope this helps you troubleshoot and solve the problem. Please let me know.
The model you have was made by Fedders for Maytag. The fan runs as a recirculating fan, to continually sense when the humidity level rises, above what have the unit set on. Here in, may be the problem. If you have the humidity level set higher than 50%, that's pretty high and the unit want remove much if anything. It will just continue to maintain that level. Keep in mind, the unit's humidity level must be set LOW, for the compressor to kick on and start removing humidity. By low, I mean 35% or minimum, if your unit does not have an LCD display.
I must caution you, that there is associate on this website that would tell you, that the level should be set on Maximum. Believe me, that simply is not the case. That is, unless you want your home to be hot and humid.
Hope this helps you to troubleshoot and solve the problem.
You should check if the compressor is running. Your description makes it appear that the fan may be running and the compressor may not be running.
There are many things that can cause a compressor to cease running:
Open defrost thermostat Bad run capacitor Low refrigerant charge (caused by refrigerant leak) Bad compressor relay Bad compressor overload Bad compressor motor
Other things to check:
If the fan switch is set to "on" and the humidity control is set to a high humidity level, the unit may appear to be running, but the compressor will not operate. Check the setting of your humidity control.
If the dehumidifier is operating in a room with a high temperature and a low dew point (very low relative humidity), it may be unable to remove any more moisture from the air.
If you are not comfortable troubleshooting the unit on your own, call the manufacturer service department at 1-800-533-7533, EXT 8459. They are very helpful.
Sorry to read about your problem, I hope this helps you out.
Their has to be a model difference issue . I have checked the Manuel and have put a copy of the section, for modes. and their is no heat only mode.
Your unit uses heat anyway, so i really do not know how, heat only would help you. I would say to look at the sticker on your friends model, and see if the numbers are exact.
When the unit is first connected to a power supply, the electronic circuit board will automatically default to the following factory settings; Mode: Dehumidifier Humidity Set Air Value:60% RH Fan Speed: = Low
NOTE: In the event of a power failure or the unit is switched 'Off', the most recent settings are retained and restored once the power is switched "On"/resumed. IMPORTANT NOTE: Depending on the ambient humidity conditions, when power is restored or switched 'On' the dehumidifier may not start automatically under the factory or custom (see page 7) default setting. This is an indica- tion that the ambient RH% level of the surrounding envi- ronment is lower than the current default setting and it may be necessary to select a lower set RH% value. DRY MODE SELECTION: 1. The unit does not have to be switched on (opera- tional) to select/set a program. All programs can be selected with the unit in the "off" position. 2. Press the MODE button until the Dry symbol is shown in the mode area of the display. Note: Each time the MODE button is pressed, the setting will alternate between DRY (dehumidifier) and FAN (only) mode.
3. Press the or cursor buttons to select the desired RH% operating value. To select CONTINUOUS operation,pressthe buttonuntilthesymbol"--" appears in the SET AIR display. During CONTINUOUS mode operation, the humidistat (control) will be by-passed and the compressor will operate non-stop regardless of humidity conditions. FAN SPEED SELECTION:
4. Press the fan symbol on the keypad. Each time the button is pressed, the mode selection will alternate between "High Fan" and "Low Fan" speed options. The fan speed you select will appear in the LED display; either a 4 blade fan symbol for 'high fan' or a 3 blade fan symbol for 'low fan' will be shown in the display area.
5. When all settings are complete, press the I/O button to start the selected operation (MODE) and the blue opera- tion light will illuminate.
FAN ONLY MODE SELECTION: 1. Press the MODE button until the fan blade symbol is shown in the mode area of the display. 2. Press the "Fan" symbol on the keypad. Each time the button is pressed, the mode selection will alternate between "High Fan" and "Low Fan" speed options. 3. When all settings are complete, press the on/off button to start fan mode operation and the blue operation light will illuminate.
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