Troubleshooting the E-92 24VAC Loss to Control Error Code

Overview

The E-92 error code indicates a loss of 24V AC power from the transformer to the control board. Although the control board is powered by 24VDC (display only), it requires 24VAC input from the transformer to function. When this voltage is missing, the control remains in the off position and displays the E-92 error.

NOTE: This error confirms that line voltage is present at the fryer (from the wall outlet), but the transformer is not delivering 24VAC to the control.

Call Avoidance

There are no remote or customer-level steps to resolve the E-92 error. This issue requires a service call.

Field Troubleshooting

Recommended Parts:

• Control board

• Transformer

• Heat contactors

• Safety contactors

• Power switch

• Breaker-side switch

Recommended Tools:

• Basic hand tools

• Multimeter

• Wire strippers and crimpers

• Zip ties (for cable management)

Troubleshooting

1. Lower the control panel to access internal components.

2. Check the reset breaker on the transformer.

   • If tripped, this may indicate a short circuit in a contactor coil or wiring and continue to step 3.

   • If not tripped, go to Step 7.

3. Unplug the P13 connector from the control board.

4. Test the blue wire pairs (heat contactor coils) in the P13 connector.

   • Normal resistance: [Bold text-5.6 ohms (±10%)] when cold.

   • If outside this range, identify and replace the faulty heat contactor.

5. Test the yellow wires (safety contactor circuit) in the P13 connector.

   • These are wired in series.

   • Normal resistance: [Bold Text-3.5 ohms (±10%)] when cold.

   • If outside this range, identify and replace the faulty safety contactor.

6. If contactors test OK, inspect the safety loop wiring. Check for pinched, shorted, or disconnected wires of the following:

   • Red wires in P13: go to high-limit modules.

   • Brown wires in P13: go to the breaker-side switch at the rear of the fryer.

7. If the transformer reset breaker is not tripped, check voltage at the control board:

   • Connector P2: Confirm line voltage (typically 120VAC or 208/240VAC) is present and securely connected.

   • Connector P1: Confirm line voltage output to transformer.

   • Confirm 24VAC return from transformer at pins 1 and 2.

8. If no line voltage is present at the control, inspect wiring from the power source.

9. If proper line voltage is present at the transformer input but no 24VAC output, and the reset breaker is not tripped, replace the transformer.

Other Possibilities

Intermittent Transformer Failures: A transformer may pass initial tests but fail under load. If symptoms persist, replace the transformer even if it tests OK.