I turned the dryer on to test power at the motor. Loking at thw dryer on top of the motor plug (the furthest from the base of thw cabinet. I had 120 there. I tried to measure across both red wires and got 120. I thought I should get 220? I inly have 120 across the element so also belived I was losin power at the motor. As I figured the other 120 was suppose to come from the motor to the element. Is that incorrect?
the motor plug (the furthest from the base of thw cabinet. I had 120 there. I tried to measure across both red wires and got 120. I thought I should get 220?
Something is weird here.
Yes you should get 220 if the heater relay is closed but the motor is not running.
The L2 voltage is direct to 2M on the centrifugal switch.
L1 is connected thru the heater relay, thermostats and heating coil to 1M on the centrifugal switch.
Since the centrifugal switch is open and therefore there is no completed circuit path for the heater, the L1 feeds through the parts and should be at 1M on the switch.
When the motor starts, the switch closes, voltage across it drops to 0 volts and you then see 220 across the heater.
As I figured the other 120 was suppose to come from the motor to the element. Is that incorrect?
It comes from the centrifugal switch that is mounted on the motor but not through the motor.
The heater circuit is L1 , heater relay contacts (on the board) , thermal cut-off , high limit thermostat , heater , centrifugal switch (1m/2M) , L2
With the same conditions as you measures the above, check the voltage at the terminal strip.
The reason is that earlier you said that you were measuring110 and 220.
Now you are seeing 120 so that L1 to L2 should be 240, both sides of the line should be equal.
So L1 and L2 to Neutral should be either 110 or 120.
L1 to L2 should then be either 220 or 240.
I get CO when I try to innitiate manual diagnostic mode. It will not do anything else afterwards unless I power it off. Then restart the sequences again.
I had a tech company come out and give up as well. He couldn't find what was the matter with it. Suggested the main board again. It can't possibly be that.
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