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Turning off high temp alarm - Frigidaire FSC23R5D Side by Side Refrigerator

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Hello Lee, thank you for allowing me to assist you. When the refrigerator is beeping or buzzing, it may be a warning sign of a possible malfunction or an unsafe, interior temperature. To silence the buzzer, you can depress the ALARM OFF button. However, if you have already done this, try unplugging the unit or flipping the household circuit breaker for about ten minutes.

If the alarm continues, it could possibly be experiencing a communication problem with the temperature control/board or wiring failure. I would recommend connecting with a professional appliance tech for a clear-cut diagnosis.

Posted on Aug 02, 2013


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My name is Peter. I am a retired field service refrigeration technician.

You are in the Sabbath Mode.

The Sabbath Mode is a feature that disables portions of the refrigerator and its controls in accordance with observance of the weekly Sabbath and religious holidays within the Orthodox Jewish community.
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1 Answer

High temp alarm

Good Afternoon Friend,

I see that you have the High Temp alarm going off on your Frigidaire refrigerator. First, you will want to press the Alarm Off button to turn the alarm off. Next, you will want to press and hold the Factory Default button to put the temperatures at 0 degrees for the freezer and 37 degrees for the refrigerator. Wait 24 hours for the temperatures to stabilize. If you are still having trouble with the alarm going off, reset your appliance by either unplugging it or shutting the power off at your homes circuit breaker for 2-3 minutes. When power is restored, you will need to press the alarm off button. If the High temp alarm is still going off, I suggest contacting your local authorized technician. Hope this is helpful.

-Best Regards-

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The high temp light is on. What can I do to reset it? Everything seems frozen and fine in the frezzer

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Good Day, egear00;
Try looking at this, since you sound like a TECH;
The Fan alarm is activated when the Fan does not run. This can happen in two different circumstances.
  1. When the Fan Fails due to a malfunction.
  2. When the Power is turned off. The FAN +12 regulators turn off and the fans quit.
(1) When the Fan Fails:
In this situation the fan alarm will be activated. Inside each fan is a hall element that keeps pin 1 of the connector pulled low when the fan rotates. If the fan stops, the pull up resistor connected back to the Fan 12+ pulls the alarm line high. This high is routed through two Diodes to the shutdown circuit of Q905, Q906. When the base of Q905 goes high, it's collector pulls the Power 1 (Power On) command line low which shuts off the relay driver Q903. The purpose of Q906 is to make the shutdown circuit appear like an SCR. If there's any pull up voltage being supplied, (in this case from the Power 1 line), the emitter to collector current of Q906 will keep Q905 in the On condition. This circuit will remain latched as long as the Power 1 line remain in the on condition.
An additional route for the Fan Alarm is out the PPS2 connector pin 9 to Q562. The Fan Alarm high will cause Q562 to turn on and pull the Fan Alarm pin 48 of the Microprocessor low. When pin 48 goes low, the Microprocessor will in turn activate the Temp LED and cause it to Blink. (See the Temp Alarm Circuit for more details).
(2) When the Power is turned off.
When the Power is turned off, the Fans do not run because the Fan +12V regulators I906 and I907 are turned off. This would generate a false Fan Alarm, so the Microprocessor outputs a High from pin 56 to Pin 7 of the PPS2 connector. This high turn on the Fan Alarm Enable transistor Q908. When Q908 is turned on, the collector is held low to prevent a Fan Alarm. This low keeps D916 and D918 cathodes held low.
click-to-view.gif Click to view Larger Image separately.
fan-alarm-protect-sm.jpg Good Luck, big IRISH.

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