CFE 410/420 Troubleshooting an E-29 Error Code

Overview

1. Amp draw detected on the amp sensor input when there is no call for heat (heat light off) most likely caused by a sticking contactor.

2. Control activates the shunt trip circuit with 24VAC on wires SH1 and SH2.

3. Breaker trips and will require a manual reset.

4. E-29 error code appears on display.

Troubleshooting a Tripped Breaker

Narrow down the cause of the tripped breaker:

• The breaker tripped because the amp draw exceeded the rating for the breaker.

• The breaker is defective or worn out tripping >10% below its amp rating.

• The breaker tripped due to activation of the shunt (amp draw detected when not calling for heat).

1. Reset breaker

2. Enter tech mode by pressing and holding the Program button for 6 seconds.

3. Enter code 11221122.

4. Use the filter buttons to navigate to step T-24.

5. Toggle this step from NO to YES with the right timer button

6. Turn on fryer.

7. Check the error log for recent errors.

   1. If there are E-25 HEAT AMPS TOO HIGH errors, then enter INFO MODE and navigate to 20. AMPS to check what the control reads for amp draw before the breaker trips.

   2. Verify this reading with an amp clamp by taking amp draw next to the amp sensor rings.

   3. If this amp rating exceeds the amp rating of the breaker, find the wiring short and correct.

   4. If the amp draw reading in step 20. AMPS is false, complete step 7.

8. If the breaker does not trip, do both of the following:

   • Check the ohm value on all three amp sensors. They should all read the same value. If they do not, replace the amp sensors.

   • Check the voltage on the control. It should have a constant 24V AC output on SH1 and SH2. If it does not, reinitialize the control. If there is no change, replace the control.

9. If this still trips the breaker immediately, then check amp draw with an amp clamp next to the amp sensor rings.

   1. If the amp draw exceeds the rating of the breaker, find the wiring issue and correct.

   2. If the amp draw is >10% lower than the rating of the breaker and the breaker trips, replace the breaker.

Testing

1. To test this output, you must enter MFG mode and press 1 for the control test.

2. Then navigate to step CT-14 Outputs and the display will say F_I_S_H and buttons 1 - 4 are illuminated.

3. Press button 4 and this will trip the shut breaker and there will be an asterisk next to "H".

4. If it doesn't trip, check for 24V when energized at wires SH1 and SH2. and that the wires are connected to the shunt portion of the breaker.

5. If voltage exists at wires SH1 and SH2 at the breaker and the breaker doesn't trip, replace the breaker.