No power to gas valve. Can get dryer to heat by jumping relay at control board. All the limits are good, the thermistor is good and ohms at 1130 (at the thermistor and at the plug on control board) even have replaced thermistor and UI. The reason I tried the UI was because of the fact the dryer did heat once by repeatedly pushing dry level button and heated briefly a couple of times for a few seconds.
I have received two boards and the second one was not packaged and was clearly previously plugged in, not sure if the first one was used also, and this did come from a PD . I am now in the process of taking dryer in and giving customer a Maytag loaner until issue is resolved. I will be ordering another board from a different PD unless someone has another suggestion.
Sure seems as though the board is not calling for heat although the thermistor measures within tolerance. I would next see if I could determine if the connector plug for the thermistor might have a lose pin connection. I’ve had a couple back out because they were un-seated and also have had a couple where the connection within the plug was just weak enough not to make the pin. When tested with a meter, the force of the probe against the connector makes the connection.I have had a few of these where the motor failed and caused a similar symptom. Another possibility is the centrifugal switch on the motor failing and not the motor itself. Do not rule out the centrifugal switch.
- AV Repair Help answered 9 years ago
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You were spot on! The motor switch is the issue. The neutral for the gas valve runs from terminal 1 & 2 which checked good, however there is a black wire that runs to the steamer (which this unit does not have) from terminal 5 & 6 on motor must be another way the control board runs a background input in figuring if it will close the heat relay on control. Just wish the wiring diagram for gas dryer was just I little clearer when there is not a steamer present. The problem I now have on this 1.5 year old machine, motor is NA! DC93-00101M, and no cross, oh bother! Office just found through Samsung direct is crossed with DC93-00101U. Waiting now to see if customer is willing to invest the money on this one.
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