Viking Range Griddle Not Heating: Troubleshooting &... | appliancefaults.com

Technical Background:

MCU logic and voltage paths.

The Viking range griddle operation relies on the main control unit (MCU) to regulate the heating element. The temperature sensor sends feedback to the MCU, which then modulates the power supplied to the heating element. The griddle circuit consists of a 120V AC power supply, a heating element, a temperature sensor (thermistor), wiring harness, and the MCU. A failure in any of these components can cause heating problems.

Symptoms:

US homeowner observations.

The Viking range griddle is not heating up at all, or it is heating unevenly. One side might be hot while the other is cold, or the griddle takes an excessively long time to reach the set temperature. Customer may also report error codes (if applicable on the model).

Possible Causes:

Failed griddle heating element
Faulty temperature sensor (thermistor)
Defective control board/MCU
Wiring harness issue (loose connection, burnt wire)
Incorrect voltage supply to the range
Dirty or corroded electrical contacts

Solution:

1

Disconnect power to the Viking range at the breaker panel. Verify no voltage is present using a multimeter.
2

Locate the griddle heating element. Use a 5/16-inch nut driver to remove access panels if necessary.
3

Inspect the wiring harness for any signs of damage (burns, frays, loose connections). Repair or replace as needed.
4

Check the resistance of the griddle heating element with a multimeter. A typical reading should be between 15-30 ohms. If the reading is open or shorted, replace the element.
5

Test the temperature sensor (thermistor). Consult the Viking service manual for the correct resistance value at room temperature (approx. 70°F). If the resistance is out of range, replace the sensor.
6

Verify the control board is receiving the correct voltage (usually 120V AC) to power the griddle circuit. Use a multimeter to test voltage at the board terminals. If voltage is absent, trace the circuit back to the breaker panel.
7

If all components test good, the control board is likely faulty and needs replacement or licensed technician repair.

Safety Warning:

LOTO and high voltage warning.

Always disconnect power to the Viking range at the breaker panel before attempting any repairs. Follow Lock Out/Tag Out (LOTO) procedures to prevent accidental energization. High voltage is present within the range; exercise caution to avoid electric shock.

Prevention:

Specific maintenance.

Regularly clean the griddle surface after each use to prevent food buildup and corrosion. Periodically inspect the wiring harness for any signs of wear and tear. Ensure the range is receiving the correct voltage supply from the breaker panel.

Expert Tip:

Trade secret or service mode sequence.

Some Viking models have a diagnostic mode that allows you to test individual components. Refer to the service manual for your specific model to access the diagnostic mode and run component tests.

Frequently Asked Questions

•What is the typical resistance value of the griddle heating element?

A typical resistance value for a Viking range griddle heating element is between 15-30 ohms, but always consult the service manual for the exact specification for your model.

•How do I access the diagnostic mode on my Viking range?

The procedure for accessing the diagnostic mode varies depending on the model. Refer to the service manual for your specific Viking range.

•What should the voltage reading be at the control board terminals for the griddle circuit?

Typically, the voltage reading at the control board terminals for the griddle circuit should be 120V AC, but verify this with the wiring diagram for your specific Viking range model.

Viking Range Griddle Not Heating: Troubleshooting & Repair Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance value of the griddle heating element?

•How do I access the diagnostic mode on my Viking range?

•What should the voltage reading be at the control board terminals for the griddle circuit?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: