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Have LRFCS25D3 acting very weird.
Freezer temp fluctuates from 0 to 20 degrees every 6-8 hours, while frig seems to stay in 38-45 range during same time.
Ran test with button on PCB board, evaporator fan runs during test, and have changed thermistor, but still constantly fluctuating.
Any ideas?
Possibly compressor relay?
Any advice appreciated.
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hi @abacojack
Sounds like the refrigerator is entering the auto defrost cycle more often than it should.
According to p.59 of the service manual the auto defrost cycle can occur once every 7 to 50 hours depending on how often the doors have been opened i.e. the more times that the doors have been opened the greater the chance that more warmer, moister air is entering the compartments and then condensing and freezing on the evaporator unit is normally operating at approx. -18°C (0.4°F) increasing the ice build up on the evaporator unit.
During a defrost cycle the compressor is turned off and the temperature is allowed to rise in the compartment to start defrosting the ice build up on the evaporator unit.
The defrost heater which is under the evaporator unit inside the freezer compartment is turned on to melt the accumulated ice from the evaporator unit.
After a predetermined time or if the defrost thermistor detects that the temperature exceeds its preset operating temperature, the heater is turned off and the compressor is restarted to commence cooling again.
The predetermined time is calculated to melt the ice but not to allow the temperature to rise anywhere near 0°C (32°F) as you don't want the frozen food to even begin to thaw.
Check for any error codes that may be present by using the method as seen on p.61.
If there are an error codes, the codes are shown on p.61→p.62
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Thank you much for note and manual.
Not sure I understand how to test per manual, but I tried pressing Freezer and Ice Plus buttons for 4 seconds, and all I see is an 88 in both the Freezer and refrig temp lcd displays, and find no reference to an “88” in the manual.
So obviously I’m doing something incorrectly. Any idea what I’m missing as to how to run test to get proper error code? Thx.
One other thought….…Failed to mention I’m not using icemaker, and it might be bad, so should I disconnect it, or does it have no relation to my issue?
I don't think that the ice maker would be causing the problem.
it sounds like normal defrost cycle behaviour except it's occurring to often.
The defrost cycle period is controlled by the control board and is influenced by how often the doors/drawer have been opened.
How are you measuring the temperature variations from 0° to 20°?
If by some sort of temperature logging device are these fluctuations occurring overnight?
My thoughts are that either it's a faulty door switch signalling that the door is open when it isn't or it is a control board problem.
I am measuring with. Mocreo temp sensor and am trying to figure how to,post screen grab of the graph
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crwdns2934271:0crwdnd2934271:0 AbacoJack crwdne2934271:0