Question about Intertherm P3RA-036K Air Conditioner

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I have an Intertherm T3BC unit that seems to frost up all the time and I never see it go into defrost mode. Is there a way of checking that the timer and or board is working? I know where both are located and they look fine. What settings should they be set at?

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On the board there is a jumper it has writing marked 45 60 90 for amount of time to check for defrost
set jumper to shorter time if it still does not defrost there is 2 pins that you short out to make it defrost if they dont make it defrost there is a bad defrost sensor mounted on condensing coil its bad or the whole board is bad

Posted on Jan 01, 2011

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Model number BFFF54170W. The fridge keeps freezing everything. There is frost at the top of the back wall all the time but things only seem to freeze over the night time and sometimes the noise changes and...


ur defrost terminator is bad and is not going into defrost cycle? and this will stop the fan from circulating the cold air. the heat is only suppose to last up to 20-30 minutes then back into defrost mode? if the defrost timer is bad heres a trick u can use that may get u back into defrost mode, locate the defrost timer in ur fridge usually at top center. then under the timer u will see a tiny slot or hole. if u stick a small screw driver into that hole and turn slowly clockwise till u hear it click? i, it will now go into defrost and u should hear the fan and the compressor go off , hope this helps let me knoiw if u have any more questions, lastly I suspect its not ur timer but ur defrost terminator> meaning is will not allow it to go into heat defrost. its easy and relatively inexpensive.

Mar 14, 2015 | Frost Refrigerators

5 Answers

Frigidaire will not manually defrost 2004 side by side


A mechanical defrost timer controls the defrost cycle of the appliance. In older models, the timer runs continuously and roughly every six hours, cuts power to the cooling system and sends power to the defrost heater. In newer models the timer advances only while the compressor or defrost cycle is running - an improvement for efficiency. As the timer continues to advance, power to the heating element is cut and power is restored to the cooling system. If the timer does not advance, the appliance will be stuck either in defrost or refrigerate mode, resulting in, respectively, no cooling or frost build-up.
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The defrost timer is usually found behind the front grill of the freezer. It may also be found behind a cover plate inside the freezer, in the temperature control console, or behind the freezer near the compressor.
To test whether the defrost timer is simply failing to advance, locate the advance screw and turn it clockwise until you hear it click. This advances it to the next mode. If it was cooling before, it is now in defrost mode. Simply wait about 35 minutes and check whether it has left defrost mode and has resumed cooling (listen for the compressor). If it does not advance, the timer motor is probably bad and the entire timer needs to be replaced. If it advances as it should, then you can follow the steps below to test the switch electrically.
The timer is usually held in place with one or more screws. Remove the screws and gently pull the timer out far enough to disconnect the wiring connector. The connector can be removed by firmly pulling and rocking it left and right. It is not necessary to note the position of the wires because the connector plug is keyed so that it can be replaced in only one way.

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Once you have located the common terminal, touch one probe to it. Touch the other probe to each of the three remaining terminals. The multitester should display a reading of zero or near to zero ohms (which indicates continuity) for one pair of the terminals and possibly two pairs. The third pair of terminals should show no continuity (infinity).
Locate the timer switch and turn it clockwise until you hear it click. Now retest the timer as you did above. One pair of terminals should indicate continuity (possibly two pairs). At least one pair should give a reading of infinity. Note however, one of the pairs that showed continuity in the first test should now read infinity and one pair that read infinity should now show continuity. If the defrost timer does not pass these tests, it is likely that it should be replaced.
* We have received two reports of cases in which only one pair of terminals shows continuity and when the timer is advanced, the same pair still shows continuity. For these isolated cases, this was reported to be the correct operation of the timer. At this time we have not been able verify this case. This may indicate a specific model or models that use a different wiring configuration than discussed in this article. Also, note that this article applies to mechanical defrost timer controls and not electronic or adaptive defrost controls.

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Sep 18, 2008 | Frigidaire PHSC239DSB Side by Side...

1 Answer

Modle # TSF-495D will not defrost


If there is no cooling at all on the fridge section but the freezer works then it is confirmed that the compressor and gas pressure is OK. Now shut off the fridge and leave it powered off while you clean and check the evaporator for frost. If frost is seen it is a good indication as the compressor is working with sufficient gas within.
Now after about 6 hours plug in the fridge to start. Observe cooling to happen in about one hour and ice to from under three hours.
Earlier make sure that the thermostat was set to normal mode for freezer and fridge.
However if ice forms in the freezer then observe the fridge for about 24 hours for cooling to continue and the fridge to cut off . If not the auto defrost timer, or the thermostat must be checked. Frost formation without defrosting could block the air flow and so shut the air passage to the fridge. Also the blower fan must work and if this is not working then the fan can be faulty. Also a fault on the control unit is a suspect to non functioning of any one of these components.
If defrost timer works but frost keeps forming check while the compressor shuts if the heaters are working, check continuity of the heaters.
So try this test using a multi-meter on the defrost timer and the thermostat and make your observations so that we come to the solution.

Please check the link below for tips to remove the panels/parts: http://www.espares.co.uk/advice/fridges-and-freezers/a/2

Jan 11, 2013 | Refrigerators

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Ronmcmiller@yahoo.comi'm getting a nice sheet of ice on evaporator,when the system goes into defrost the ice will not drop, the unit seems to stay in a semi defrost stage. what do I do to repair this...


Hello Ron,
It sounds to me as if either the defrost thermostat is weak and cutting the hearter off before all frsot is melted OR the defrost timer is running too fast and not giving sufficent time for frost to properly melt. The usually total time the refrig will spend in the defrost mode is 25-30 minutes,that is the time from when it starts defrost mode,until the time it goes back to cooling mode,typically all the frost will melt within 15 minutes, but it still stays in deforst mode if the heater is on or off until the 25-30 minutes has elapsed. Now if you have a older (late 1980's to mid1990's) General Electric the problem is more severe and the compressor is bad, but only ge brand during those times.

Gene

Aug 07, 2011 | Refrigerators

1 Answer

The cooling coil in the back of the freezer frosts up and needs to be manually defrosted nearly ever 2 weeks. The timer seems to cycle properly and the compressor cycles properly but the defrost cycle...


The ohms of the defrost heaters vary, but all you really need to do is check it for continuity. If its open, its bad. The defrost thermostat must be closed for defrost to happen,it is in series with the heater the defrost thermostat opens to terminate defrost, then the timer puts the unit back in run mode.
To check the defrost thermostat you have to put in in a freezer for a while then check for continuity . The actual open and close temps are usually stamped right on the defrost thermostat Its considered good practice to replace both the heater and the defrost thermostat while you are in there

Jun 28, 2011 | Refrigerators

1 Answer

Is my refrigerator running properly? Refrig. went into defrost mode about 6-7 hours the other night. Unplugged and pugged it back in and it seems fine. Now, the refrig is performing defrost every 1-2...


if its a timer controlled defrost it will defrost every time the timer gets to the spot where it cuts off the compressor and activates the defrost circuitry,if its an "adaptive defrost type system" then it depends on the amount of times the door is opened,the amount of frost on the evaporator coil,etc and is determined by sensors in the units walls

Mar 08, 2011 | GE Refrigerators

1 Answer

Freezer is not keeping cold and forming icicles along wall


It may just be a defrost timer. Search online for information. There is plenty to be had. Check with the website of GE for a parts breakdown or your manual if you still have it for the location of the defrost timer. You can turn it manually so it goes into defrost. Does the unit seem to be running all the time and never shuts off? If so that timer could be stuck in the cool mode and the evaporator is freezing up solid so air wont flow over it to properly cool. I've had two refrigerators I've had to repair that had defrost timer problems. One stuck in the defrost cycle and wouldn't turn on to cool, the other did what you are describing. It stuck in the cool cycle and wouldn't defrost you may need to manually bypass the cooling cycle several times to allow it to completely defrost. Usually it cycles in cool from 6,8 or ten hours and only stays in defrost for over twenty minutes. That should defrost it and allow it to start cooling again. If you notice that frost has disappeared inside on the wall replace the timer.

May 22, 2009 | GE Monogram Side by Side Refrigerator

1 Answer

Freezer frosts up and stops cooling after approximately 2 weeks


With your new timer in hand look and find a slotted screw driver head that you can turn. That is to manually advance the timer. Now put the new one in and advance it to engage the compressor and fan. Might be in the middle of defrost mode. Your unit goes through 3 defrost modes in a 24 hour period. And each mode last for 20 minutes. Once you do this I could help further if that was the case. Okay ken

May 02, 2009 | GE (PSS26MSRSS) Side by Side Refrigerator

1 Answer

FRIDGE AND FREEZER WON'T COOL. OVEN DIRECTLY IN FRONT OF FRIDGE IS TURNED ON AND LEFT OPEN TO WARM HOUSE SOMETIMES(HOUSE HEATER BROKEN TOO). COULD THE HOT AIR HAVE DONE SOMETHING TO FRIDGE?


The oven is more likely just a coincidence. All frost-free refrigerator-freezers have a thing in the system called a Defrost Timer. The thing is a little clock of sorts that tracks accumulated running time. Every 8 hours of run time the thing cycles through a defrost cycle. The defrost cycle is necessitated by the humidity that forms ice crystals on the freezing coils, if the frost is not eradicated it can build up to the point where no air flows over the coils to chill the inside of the box. The Defrost timer in all boxes fails eventually from old age. When that happens, the coils frost over until they become pretty much just a solid block of ice. Most timers are located on the front of the machine, behind that removable grille under the door. The timer has a round hollow shaft through it, and can be turned with a screwdriver. If the compressor is running, give the shaft a slow twist until a click is heard. The compressor will stop. Give the fridge an hour to defrost the coils, and check it to see if it took off running. Sometimes the nudge will make the timer run for a while. If this is the case, the unit will chill, and buy you some time to get it fixed. If the timer does not run, you can repeat the process daily until you get a replacement timer. If the unit does not chill, there is some other problem either with the defrost heater coils, or the sealed system. If this seems to be the case, make sure the condenser coils under the unit are not obscured with accumulated dust/dirt and that they have airflow from the fan behind them. For heater or sealed system repairs, you should call a servicer.

Dec 17, 2008 | Refrigerators

1 Answer

GE (Mode TBX21ZLG) Frige has water collecting in bottom


if there is definite frost which has some depth to it, you may have a bad defrost timer. look for the timer usually inside kick plate in the front of unit. it'where you clean the condenser coils. with a flat head screwdriver or your finger turn the knob until the unit shuts off. if the fridge doesn't come on in 1/2 hour you have a bad timer motor and buy a defrost timer. if the unit comes on in 20 minutes or so the timer is good and you have to look elseware possibly the condenser coils and fan which are near the bottom clean coils anyway because it's good practice to keep them clean to save energy. the fan either works or it doesn't make sure refridgerator is running to check this. anything else you have to defrost the evaporater in the back wall of freezerthis could take some time but after it's defrosted turn timer to off a see if the heater is red in color if not then with a multi meter with the unit unplugged test across heater for continuity on heater . klixon and hi-temp cut out. good luck. if you are not feeling safe call a repairman

Dec 13, 2008 | GE J Series 18.2 cu. ft. Top Freezer...

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