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Error code reference

GE Range Error Code ER 3

MTwisT Control fault

GE codesGE range codes

MTwisT Control fault: Selection of Keys error.

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What ER 3 means on a GE range

The ER 3 error code on a GE range indicates a fault within the MTwisT control system, specifically a Selection of Keys error. The MTwisT control is an integrated user interface and control board assembly that manages keypad input, knob-based selections, and communication between the user controls and the main control board. When the system detects an invalid, stuck, or conflicting key input signal, it triggers this fault to prevent unintended operation of the range.

This type of fault typically originates from a problem in the keypad membrane, the control board's input scanning circuitry, or the wiring harness connecting the two. A key that is physically stuck in a depressed position, a membrane switch that has shorted internally, or a damaged ribbon cable can all produce erroneous signals that the control interprets as an invalid selection. Moisture intrusion, grease contamination, or physical damage to the control panel are common environmental contributors to this failure mode.

Because the MTwisT control integrates knob selection with electronic keypad input, a fault in either the mechanical encoder side or the capacitive or membrane key side can trigger ER 3. Technicians should inspect the control panel for visible damage, check for stuck keys, and evaluate the ribbon cable connections and control board for signs of contamination or corrosion before replacing components.

Source: manufacturer service documentation.

Common causes of ER 3

  1. 01

    Stuck or physically damaged key

    Wiring / connection

    A key on the control panel that is physically stuck in a pressed position will continuously send an invalid signal to the MTwisT control, triggering ER 3. Inspect each button on the control panel for visible deformation, debris lodging, or a key that does not spring back when pressed.

  2. 02

    Contaminated or shorted keypad membrane

    Part replacement

    Grease, moisture, or liquid intrusion beneath the keypad membrane can cause internal shorts between key contacts, producing false or conflicting input signals. This is especially common near the burner controls on ranges used in high-splatter cooking environments.

  3. 03

    Damaged or loose ribbon cable

    Wiring / connection

    The ribbon cable connecting the keypad assembly to the MTwisT control board can develop breaks, corrosion, or loose seating at either connector end, causing intermittent or corrupted key input data. Carefully inspect both ends of the ribbon cable for damage or improper seating.

  4. 04

    Failed MTwisT control board

    Part replacement

    If the input scanning circuitry on the MTwisT control board itself has failed, it may incorrectly read valid key states as errors or fail to properly resolve key selection signals. This is typically suspected after the keypad and cable have been ruled out as the cause.

  5. 05

    Transient electrical surge or glitch

    Wiring / connection

    A brief power fluctuation or electrical surge can cause the MTwisT control to register a false Selection of Keys error. Performing a power reset by disconnecting the range from power for several minutes may clear the fault if no physical damage is present.

See the test procedure for each cause

Frequently asked questions about ER 3

What does ER 3 mean on a GE range?
ER 3 on a GE range indicates a Selection of Keys error within the MTwisT control system. The control has detected an invalid, conflicting, or stuck key input signal from the control panel. This fault causes the range to halt normal operation to prevent unintended activation of cooking functions. The issue can originate from a stuck button, a faulty keypad membrane, a damaged ribbon cable, or the control board itself.
Can I fix the ER 3 error on my GE range myself?
Some causes of ER 3 can be addressed without professional help, such as clearing debris from around stuck keys or reseating a loose ribbon cable. However, replacing the keypad membrane or the MTwisT control board requires disassembly of the control panel and comfort working with electronic components. If you are not experienced with appliance repair, it is advisable to have a qualified technician perform the diagnosis and repair.
Will resetting my GE range clear the ER 3 error code?
A power reset, performed by unplugging the range or turning off its circuit breaker for several minutes, may clear ER 3 if the fault was caused by a transient electrical glitch. However, if a physical problem exists such as a stuck key, contaminated membrane, or damaged control board, the error will return after the reset. A reset is a good first step, but persistent reappearance of ER 3 indicates an underlying hardware issue that requires further diagnosis.
Is it safe to use my GE range while ER 3 is displayed?
It is not recommended to continue using the range while ER 3 is active. The error indicates the control system cannot reliably interpret key inputs, which means cooking functions may not respond correctly or could behave unpredictably. Discontinue use until the fault has been diagnosed and resolved to avoid any unintended operation.
How much does it cost to repair the ER 3 error on a GE range?
Repair costs for ER 3 vary depending on the root cause. Replacing a keypad membrane assembly typically falls in the range of $75 to $200 for the part alone, while a MTwisT control board replacement can range from $150 to $400 or more depending on the model. Adding professional labor costs will increase the total, generally ranging from $100 to $200 for a service call and repair. A technician should confirm the faulty component before any parts are ordered.

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