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Model numbers can be made up of numbers (1005400, for example) or a combination of letters and numbers (LAT1000AAE). The model number will most likely appear on either a paper sticker or a metal plate. Your appliance's model number tag may look similar to the sample model number tags shown here (model number highlighted in yellow):
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This is a single water filter that can be accessible inside the refrigerator. Water filters are designed to provide cleaner and betting tasting water, while also protecting refrigerators and ice machi...
$65.69
In Stock
Order now and your part arrives by May 26
Questions And Answers for LFX25778ST
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Kevin
March 14, 2026
how can I tell if the circuit board has malfunctioned. the l.e.d. light does not flash when the test buttons are pushed. no cooling in fridge nor freezing in freezer. fan comes on and vibration felt in condenser.
For model number LFX25778ST
Hi Kevin, thank you for your inquiry. If the LED light on your refrigerator main circuit board (PCB) does not flash or beep when the test button is pressed, the main control board, part number PS3625119, has likely failed. The combination of a totally unresponsive test button, no cooling, and only fans/condenser vibration suggests the board cannot send power to the compressor to start. Glad to be of help!
Closed valve to water supply line; Removed contents of top shelf. Removed top shelf by sliding it out. Unscrewed old water filter and screwed in new filter. Replaced to shelf and contents in reverse order. Opened water supply line.
