Carrier Model 38LE048310CD Contact swith not

there could be two possible causes: the switch or the electromagnet that holds the bread carrier down. if the toaster operates (starts to toast) when you manually hold the lever down, then the switch is good and the problem is with the electromagnet. if it doesn't do anything when you hold the lever down then it is the switch. in either case you'll have to open up the toaster to see if something was knocked out of alignment, or possibly a large crumb or debris is fouling up the switch or preventing the magnet from engaging with its keeper

if the correct voltage is applied then I would check relay, may be bad. use insulated tool and push the contactor down and see if unit runs.

is it cutting out in reverse when the cutters are engaged??
some will do this as its a safety device, more modern machines have a over ride, be it on the ignition swith or a button or even a pedal

check the switch itself to see if power is passing thru use an ohm meter for best results..

Go to youtube . Type in your make and model/ forward and reverse will not engage. Should be helpful.

Are you sure you have high voltage going to the unit? One wire from fan lands on top left of contactor, the other two go to C and Fan on capacitor. Manually push in contactor, if no fan than no high voltage.

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The e-prom controls how the ATS behaves. It is very important to install the e-prom, so that the ATS works when power fails.

A door is not fully closed or the push-button swith that engages when the door closes is loose, has pushed through or a wire is off. Also, check your dome light dimmer to see if the rotary knob or dial isn't locked in the on position.

Bad contactor - replace