Amana Range Error Code F11: Keypad Short Circuit... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) constantly monitors the keypad matrix for button presses. Each button corresponds to a specific voltage path. The F11 error indicates that the MCU has detected a short circuit or a stuck-key condition in the keypad circuit. This could be due to a shorted membrane, a malfunctioning connection, or a control board failure.

Symptoms:

The homeowner reports the oven is displaying an F11 error code. The keypad may be unresponsive, or some buttons may be stuck 'on'. The oven may not heat up at all.

Possible Causes:

Spilled liquids on the keypad
Damaged keypad membrane
Shorted ribbon cable connecting keypad to control board
Faulty control board (MCU)
Loose keypad connection
Insect infestation causing shorts

Solution:

1

Disconnect power to the range at the breaker panel. Verify with a multimeter that the 240V AC is OFF at the range receptacle.
2

Remove the range vent or back panel (usually Phillips head screws).
3

Locate the keypad ribbon cable connected to the main control board.
4

Inspect the ribbon cable for damage, kinks, or corrosion. Use a magnifying glass to check for hairline cracks.
5

Disconnect the ribbon cable from the control board. Use a multimeter set to ohms to check for continuity between pins on the ribbon cable connector. A short will show near zero ohms. Pins that should be isolated should show infinite resistance.
6

If the ribbon cable tests good, replace the keypad. If it tests shorted, replace the keypad.
7

If the keypad is good, replace the main control board. Ensure the new control board is compatible with the oven model number.

Safety Warning:

Disconnect power to the range at the breaker panel before attempting any repairs. Failure to do so could result in electrical shock, serious injury, or death. Lock Out/Tag Out (LOTO) procedures should be followed.

Prevention:

• Clean the keypad regularly with a damp cloth, avoiding excessive moisture.
• Avoid spraying cleaning solutions directly onto the keypad.
• Schedule yearly appliance check ups to prevent issues from occurring

Expert Tip:

On some Amana ranges, you can try entering the diagnostic mode by pressing and holding the 'Cancel' and 'Start' buttons simultaneously for 5 seconds. This might clear the error temporarily, but if the underlying problem persists, the error will return. This also allows voltage testing of components.

Frequently Asked Questions

•How do I test the keypad membrane for continuity?

Using a multimeter set to ohms, test between the individual button contacts on the back of the membrane. Each button should show a closed circuit (near zero ohms) when pressed and an open circuit (infinite resistance) when released.

•Where can I find replacement parts for my Amana range?

You can find replacement parts at authorized appliance parts retailers, both online and in brick-and-mortar stores. Be sure to have your range's model number handy to ensure you order the correct parts.

•If the keypad and control board are both replaced, is there anything else that could be causing the F11 error?

While rare, a wiring harness issue between the keypad and control board could also cause the error. Thoroughly inspect the wiring harness for any damage or breaks before replacing any more parts.

Amana Range Error Code F11: Keypad Short Circuit Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the keypad membrane for continuity?

•Where can I find replacement parts for my Amana range?

•If the keypad and control board are both replaced, is there anything else that could be causing the F11 error?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: