Turbo Chef Technologies Residential Single and Double Wall Oven service manual Troubleshooting

Testing for a K11 SSR that is Stuck Open

1.Ensure the oven mode dial is in the off position.

2.Pull the insulated wire terminals back, but not off, to expose the terminal on all four brown wires of the relay.

3.Turn the oven mode dial to Bake to activate the relay.

4.Apply the probes of the multi-meter across the A1 and A2 terminals and B1 and B2 terminals individually. A 208/240 reading will show an open relay, 0 will show a closed relay.

Testing for a K12 SSR that is Stuck Open

1.Ensure the oven mode dial is in the off position.

2.Pull the insulated wire terminals back, but not off, to expose the terminal on all four brown wires of the relay.

3.Turn the oven mode dial to Broil to activate the relay.

4.Apply the probes of the multi-meter across the A1 and A2 terminals and B1 and B2 terminals individually. A 208/240 reading will show an open relay, 0 will show a closed relay.

Testing for a K13 Relay that is Stuck Open

1.Disconnect the two L2 blue wires from the K13 N.O. switch and the two L2 blue wires from the K13 common. Turn the oven mode dial to Bake to activate the K13 relay.

2.Apply the probes of the ohmmeter to the common and N.O. terminals of the K13 relay that are now exposed. They should register continuity. If they do not, verify the relay is receiving control voltage from the blue wires that are still attached to the relay in the upper left corner.

3.If control voltage is present, replace the relay and test the oven. If no voltage is present, investigate for broken wires.

4.If the K13 relay is receiving control voltage and is closing normally, L2 voltage is reaching the elements. The K11 and K12 solid state relays will probably not both short in the open state, so test the control board for control voltage reaching the K11 and K12 SSR.

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TROUBLESHOOTING