How to fix E-22 or E- 6 error code on the DynaTrol

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How to fix E-22 or E- 6 error code on the DynaTrol

E-22 is the same as E-6. It means one of the thermocouple wires is connected backwards.

Here is how to fix it:

  1. When the kiln is cold, start a fast glaze program to any cone number.
  2. Once it starts firing press 1,2,3 and write down each different temperature.
  3. 5 minutes later press 1,2,3 and write down each different temperature again. One of the thermocouple readings will now be lower, not higher than before. That is the thermocouple circuit with the problem. TC 1 is the top thermocouple, TC 2 the middle, and TC 3 is the bottom thermocouple.  Identify which thermocouple is reducing it's temperature as the kiln heats.
  4. Press STOP and UNPLUG the kiln now.
  5. Open the outer control box (top two screws on an Easy-Fire kiln) and look at the red and yellow wires at the connection strip on the back wall. It should be red to red and yellow to yellow AND start with yellow on the top and go yellow-red-yellow-red from top to bottom as the wires cross the connection strip.
  6. If all is well in the outer box, open the inner box (right two screws- it will only open a couple inches- DO NOT FORCE IT) and check to see if the yellow wires are in the top and the red wires are in the bottom on each of the ceramic oval thermocouple connections.
  7. While in there, check the tightness of each of the 4 screws on each ceramic oval. They should be snug but not overtightened. Gently tug on each red and yellow wire.
  8. If it all looks OK, right there at the ceramic oval, reverse the wires on the thermocouple (1,2,or 3) that you determined was reducing it's temperature.  The problem is that the TC itself is flipped over in the ceramic oval connection block.
  9. Check to make sure relays are connected to the proper outputs.
  10. Check that thermocouples are connected to the proper inputs.
  11. If that does not fix the Error Code, then replace the DynaTrol.

Additional Actions to Take

  1. Unplug kiln.
  2. Remove the four #6 screws that hold the control in place from the front face of the control panel.
  3. Remove the control box and remove the insulation panel.
  4. Pull of the spade connectors from all the connection points on the back of the control. Loosen the screws that hold down the thermocouple wires and pull out the wires from under the screw heads. It is OK to remove the screws if this is easier for you. First not where all the wires go. These are all clearly marked with color coding on the Wiring Diagram.
  5. Pull old control out. Put new control in and screw in place with the #6 mounting screws. Replace wires on proper connectors.
  6. Be careful to get the Red or Yellow of the thermocouple wires to match the colors painted on the control board.
  7. Double check that the proper color coded wire goes to the proper terminal (Orange = OUT, Purple = AC1, Green = CT, Gray = AC2).

This video shows how to replace a DynaTrol on an Easy-Fire kiln. The same principles apply to any kiln with a DynaTrol or Genesis control.


  1. See this page for the part.


This video shows how to remove a control panel on an Easy-Fire, School-Master or eQuadPro kiln for service.

  1. Unplug kiln or turn off circuit breaker if the kiln is wired direct to your power supply. If you can not physically be sure the power is disconnected (for instance is you see that the cord is unplugged you KNOW there is no power coming into the kiln) then check the voltage at the power connection pluck with your multi-meter.
  2. Open up the control panel. This will be a little different on each kiln series.
  3. Remove or open the panels that cover the element connections.
  4. Look at internal wiring.
  5. Images burned wires in a kiln

  6. Check the tightness of all connections. Do this by wiggling the connector to make sure nothing is loose.
  7. Make sure all wires are connected to their proper connection point. You may have to compare the kiln to the wiring diagram to be sure of this. This step would be particularly important if a wire has come loose.
  8. Specifically look at wires going from power connection block to the on/off switch, then to the control fuse, and finally to the control transformer.
  9. Make sure all wires inside control panel are connected.
  10. Look for any burned spots or deteriorating wire.
  11. Look for any short circuits. This might be caused by a wire losing its insulation and touching another component for instance. Typically if there are any short circuits there will be some evidence of a burn on the metal the wire touched.
  12. Look for dirt or foreign material. Some material can be an electrical conductor and could cause a short circuit. Clean out any dirt.
  13. Pull off and reseat all spade connector connections of power wires to remove oxides and ensure good connection.

CAUTION: Turn power off to kiln from the circuit breaker or unplug the kiln.