Chosen Solution
Hi, My Maytag Gas Dryer Model Number MDG4658AWW has a rotary selector to choose mode (Regular/Permanent Press/Delicate) and dry time. When I press on the rotary selector, it starts motor. The problem is that the motor stops after few seconds, usually half a minute. This happens even if the dryer is on “Air Fluff’ mode, so that the gas burner is not needed and not started. Following are my findings. The rotary selector seems to loose power randomly, sometimes when I am rotating it, the led displays stops showing anything for about 5 seconds, after which they start showing power.When the dryer stops, after starting in any mode, the power led blinks.I entered the diagnostic mode, and viewed the error codes, it shows “Power Failure” error code. I have to enter diagnostic mode and quickly press the button for error codes, before the above noted LED loss (assumed power loss) occurs again, because if I am not quick enough the whole things resets and I have to enter the diagnostic mode again.I tests all components/sensors on the wiring diagram with a multemeter and everything checks out.I am thinking it might be a relay on the control board, or the board itself, but there is no burnt component on the circuit board. Wiring diagram:
Please help.
It turned out to be a faulty circuit board. I replaced it and all works as expected. Jay thanks for your help in troubleshooting.
Hi @benthefixer , I’m wondering if you have a faulty motor. Perhaps an open circuit run winding. When you start the dryer, the control board operates the motor drive relay on the board which supplies power to the start winding and the run winding of the motor. Both windings are used to provide enough magnetic power to start the motor turning from idle. Is the motor slow to start? When the motor runs up to speed, the centrifugal switch in the motor operates and disconnects the start winding from the power as only the run winding is now needed to maintain the motor running at the correct speed. If the run winding is open circuit the motor will stop when the switch operates. This may be detected by the control board but I’m not sure of this It will be difficult to do a static test using an Ohmmeter on the motor (i.e. no power connected) as both windings are connected in parallel between terminals 4 and 5 on the motor terminal connector. You would have to check if there is voltage at terminal 5 of the motor terminals when the motor first starts, which there should be, and then see if it is still there when the motor stops, (also check on motor terminal 4), assuming that the relay on the board hasn’t released. You can also check if there is a constant voltage supply on Control board connector PS5/13. This is the input supply to the control board. You said that you tested all components, so assuming that the door switch is OK there should always be power available, both active (L1) and neutral (PS5/15) at the control board. Be safety aware when you go to test as possibly lethal voltage is present at the control board and in other places in the dryer. If you don’t know how to test for high AC voltages then don’t!. Leave it for the experts.
