Question about Maytag Neptune MDG5500AW Gas Dryer
My neptune dryer is beeping when it isn't running. It sounds like the beep that happens when the dryer shuts off, and it isn't constant, and it doesn't happen all the time. any ideas?
This is a mystery to me. Try typing into google "beeping sound on Neptune dryer". There may be a solution on there from Neptune or someone who has had a similar problem.
Posted on Jan 14, 2009
It is apparent that the beeping sound has something to do with the control panel (membrane) or the computer board behind the panel. We have found the source of the problem and can help. The problem often stems from water vapor working its way into the membran via the lack of a seal around the digital display. The membrane is supposed be sealed to avoid ambient atmosphere from entering the membrane and causing low resistance bridges between contact with the membrane. Many cases appear during humid weather which lead us to investigate the possibility of water vapor entering the membrane. In all control panels the seal around the digital display was non existent.
With a little skill the computer board can be tested before you invest in one. You can disconnect the cable leading to the membrane and use a paper clip to jumper the contacts and see if the computer board responds with a beep each time you jumper one. There is a schematic in the control panel that show which contacts close which switches. So if you know a certain button is not working you can jumper those contacts and see if the computer board responds. As always, be aware that there are electrical dangers on the board but the membrane plug is not dangerous to test. For the techs in the world, the water vapor probably leaves conductive deposit that cause high resistance leaks between contacts which will close several switches at one time causing the stuck switch error or beeping. A hair dryer might help dry it out but I believe the deposits will remain. WD 40 might work if you can spray it around the digital display and the ribbon cable connection point. If the dryer is subjected to lower than room temperatures condensation within the membrane will be more likely. The cold air coming in, through the vent, will lower the temperature and cause condensation as well.
Testing the computer board can save time and money. The input to the computer is easy to test. We have yet to see a computer board that had major problems.
Posted on Sep 27, 2011
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