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Hai we have C80MX3-2RH CENTAC Compressor we tryed to start it but it trip off written Starter Failler what should we check ?

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  • Refrigerators Master
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Fridge not starting? CLICKING? FIRST ALWAYSCHECK FORpower at the outlet,checkfor 120 volts.

MAY HAVE A BAD START RELAY OR CAPACITOR ON THE COMPRESSOR , CAN BUY A INEXSPENSIVE 3 IN 1 HARDSTART KIT AND BY PASS THEM , NOT THAT HARD TO DO, COMES WITH INSTRUCTIONS> BY THE WAY DO U HEAR ANY CLICKING SOUNDS FROM COMPRESSOR? BUT U MAY ALSO WANT TO CHECK UR COLD CONTROL THERMOSTAT IF IT GOES BAD U MAY GET A NON START ALSO HAVE IT CHECKED FOR PROPER VOLTAGE AND OHMS RESISTANCE WHEN IN THE ON POSITION
A BAD DEFROST TIMER though seldom CAN SHUT DOWN COMPRESSOR HAVE IT CHECKED WITH MULTI METER.

to check the defrost timer, u can get by and test manually by placing a small screw driver into the tiny slot or hole underneath the timer and turn slowly clockwise till u hear 1 click. this will engage ur defrost cycle in about 15 minutes u should be able to come back and feel the heat in freezer as it melts the ice providing ur terminator is not bad?
Another way to test it is with a multi meter. Remove timer it from fridge and you will see 4 prongs numbered 2,1,4,3 in that order. Place ur meter prong on prong 1 & 3 (if your fridge has a capacitor wired in series with the windings, then u check for micro fares rather than OHMS) If u cannot confirm this test, still try the next.

Take ur meter prong and connect to prong 1 & 4, it should read resistance or ohms ( closed) now remove prongs and place on prong 1 & 2, this should now read infinity or open (no ohms) now take a small screwdriver place it in the tiny hole or slot under the timer. Turn it clockwise slowly till u hear 1 click.

Now ur 1& 2 should read closed ( showing ohms or resistance) now place meter prongs on 1 & 4 and you it should now show open ( or no resistance - no ohms) this is how u know ur timer is good, Remember when testing for ohms ADJUST meter to use a high ohms rating in the thousands as the resistance is very high in OHMS.
And adjusting to low ohms rating may give a false reading or not show the proper resistance..

Some fridges are now using ADC boards.

Designers are using microprocessors (on solid state circuit boards) to adapt defrost intervals and durations to compensate for differences and changes in operating conditions. Such techniques are calledAdaptive Defrost Control, commonly abbreviated as ADC. Theu are normally found in same locations as the timer would be but look somewhat different in appearance. It is more difficult to test these units without the appliance schematic.
Some ADC / control boards control other functions of the refrigerator, too, such as icemaking and electrical air damper door opening and closing.The defrost frequency may also be shortened under certain circumstances.


AT TIMES YOU MAY HEAR THE COMPRESSOR CLICK OFF AND ON OVER AND OVER. Signs of a bad start relay or capacitor. Check with an OHMS meter for continuity (ohms) and voltage, capacitor can be checked for Microfares. ( if in series with the windings)

If you hear your compressor "short-cycling" (starting and stopping at short intervals) try jumping across the two leads of the cold control thermostat ( in the fridge compartment) with an alligator jumper. You can also check both for live voltage current and ohms- If there is a greenthirdlead, ignore it for this test; it is the ground wire. If the fridge starts running constantly, the cold control is bad. Replace it.

To check ur compressor with multi meter:
Disconnect and remove the relay and capacitor from compressor, sometimes located next to compressor in a casing.

You wills see 3 prongs coming out of compressor. 1 goes to ur start winding, 1 goes to ur run winding and the center goes to ur ground or COM

Place ur meter connector or prong on the start prong and the other on the ground (center prong) take note of the reading in OHMS for example 5 ohms.
Next place meter prong on run prong and the center ground prong agin. Take note of the reading in OHMS. Example 4 ohms

Next place meter prong on the start prong and the other on the run prong, now take note of the reading example 9 ohms. Now match the total of this ohms test with the total of ur two separate test. 9 ohms, if they match ur ok give or take 5 percent plus or minus. One more test to make to test of there is a short in compressor attach meter prong to ground prong and rub the other end of meter prong to metal ( scrape the metal clean of paint and test on metal surface not painted surface. If it shows continuity or ohms, u have a short in ur compressor. It should show infinity
God is so good: so this is why I give free advice so please thank him not me.


TO REPLACE RELAY AND CAPACITOR WITH A HARDSTART KIT YOU CAN USE

A 3 in 1 start kit for compressors sizes 1/4 through 1/3 HP. And a 5 in 1 for higher H.P. (BE SURE TO MATCH WITH UR COMPRESSOR MODEL NUMBER AND TYPE) The kit includes relay, capacitor, and overload device, pre-wired. The kit will replace all 3 electrical components on capillary refrigeration systems. For newer systems with a run capacitor use proper kit. For smaller horsepower compressors useTJ90RCO810.

The wire set up is as follows the red wire goes to the right side of compressor prong, the white wire to the left side prong, the black wire to the center prong, and the 2 other black wires go to the power and the ground connection


http://www.appliancerepair.net/refrigerator-repair-1.html






Refrigeration System Basics Chapter 1

Posted on Jan 07, 2017

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