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Error code reference

Dacor Microwave Error Code DEMO ON

Indicates the oven is in Demonstration Mode where cooking operations can be demonstrated with no microwave…

Dacor codesDacor microwave codes

Indicates the oven is in Demonstration Mode where cooking operations can be demonstrated with no microwave power output; display counts down rapidly to END.

First step from the service manual

To cancel, touch CLOCK, then 0, and STOP/CLEAR.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What DEMO ON means on a Dacor microwave

The DEMO ON indicator on a Dacor microwave signals that the unit has been placed into Demonstration Mode, a special operating state designed for retail showroom or display purposes. In this mode, the microwave's magnetron is completely disabled, meaning no microwave energy is produced during any cooking cycle. The control board accepts all normal inputs and the display counts down at an accelerated rate to simulate cooking activity, but no actual heating occurs. This mode is entirely software-controlled at the control board level and does not indicate a hardware fault.

Demonstration Mode is typically activated unintentionally by pressing a specific sequence of buttons, often during cleaning or when children interact with the control panel. It can also be enabled during initial setup or unpacking if the control panel is inadvertently triggered. Because the unit appears to function normally aside from not heating food, this mode is frequently mistaken for a magnetron failure or a more serious internal fault.

To exit Demonstration Mode on a Dacor microwave, press CLOCK, then 0, then STOP/CLEAR in sequence. This three-step cancel sequence is required because the mode is protected against accidental deactivation. Once cleared, the microwave returns to its standard operating state with full magnetron power restored. No parts replacement or service call is needed to resolve this condition.

Source: manufacturer service documentation.

Common causes of DEMO ON

  1. 01

    Accidental button sequence during cleaning

    Wiring / connection

    Wiping down the control panel with a cloth or sponge can inadvertently press the combination of buttons that activates Demonstration Mode. This is the most common cause and requires no repair.

  2. 02

    Child or pet interaction with control panel

    Wiring / connection

    Random pressing of control panel buttons by children or pets can trigger the specific sequence needed to enable Demo Mode. The control panel will have accepted these inputs as valid commands.

  3. 03

    Activation during initial installation or setup

    Wiring / connection

    During unpacking or first-time setup, the control panel may be pressed in a sequence that enables Demo Mode before the unit is placed into service. This is common when the unit is being handled or repositioned.

  4. 04

    Retail or showroom unit not reset before sale

    Wiring / connection

    If the microwave was previously used as a display model, it may have been shipped or sold with Demo Mode still active. The mode persists through power cycling and must be manually cleared.

See the test procedure for each cause

Frequently asked questions about DEMO ON

What does DEMO ON mean on a Dacor microwave?
DEMO ON means your Dacor microwave is operating in Demonstration Mode. In this state, the magnetron is disabled so no microwave energy is produced, but the display and controls work normally and the timer counts down rapidly to simulate a cooking cycle. This is not a fault code and does not indicate any damaged or failed components.
How do I turn off Demo Mode on my Dacor microwave?
To cancel Demonstration Mode, press CLOCK, then press 0, then press STOP/CLEAR. This three-button sequence is the only way to exit the mode. After completing these steps, the microwave returns to normal operation with full heating capability restored.
Is it safe to use my Dacor microwave while DEMO ON is displayed?
The microwave is safe to operate while in Demo Mode, but it will not heat any food or liquids because the magnetron is completely inactive. Running the unit in Demo Mode presents no electrical or radiation hazard. Simply cancel the mode using the CLOCK, 0, STOP/CLEAR sequence before attempting to cook.
Will unplugging or resetting my Dacor microwave clear the DEMO ON display?
No, unplugging the microwave or cutting power to it will not clear Demonstration Mode. The setting is stored in the control board and persists through power interruptions. You must use the specific button sequence of CLOCK, then 0, then STOP/CLEAR to exit the mode.
How much will it cost to fix the DEMO ON issue on my Dacor microwave?
There is no repair cost associated with DEMO ON because it is not a hardware failure. The condition is resolved entirely through a button sequence on the control panel at no cost. If after following the cancellation steps the mode cannot be cleared, a service technician visit could range from $75 to $150 for diagnosis, though this scenario is very uncommon.

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