Question about U-Line Refrigerator Ice Maker

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Sometimes unit will not start

My boat has a U-Line SP18 won't begin to cycle (no compressor hum or cooling) when the "ON" switch in set. Only when I give the front of the unit a sharp "rap" with my hand will it start. After this, sometimes it continues to make ice all day, while other times it fails to cycle back on and needs another "rap". Is there likely a loose/corroded wire or is there likely a "starter" of some sort shot?

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First thing you need to check is the ejector blades, They should be pointing straight up at 12 oclock. If not you will need to advance the ejector blade.The thermostat is in the back of the unit. It could be a faulty thermostat. It also could be the faceplate in the icemaker. Sometimes the motor doesnt go all the way to release the hold switch. Your thermostat usually runs between 25 - 50 dollars. Yellow on 2, (common), red on 1 (icemaker) blue on 3 (compressor and fan.)

Posted on May 20, 2009

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Temp Control unit needs to be replaced - approx $75. This unit has a pre-set temp control unit which triggers the compressor/cooling fan to come on when the temp reaches its set parameters. When it doesn't function, you get the stated problem.

Posted on May 13, 2009

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2 Answers

Condencer runs for 20 sec then off keeps repeting after 2 or 3 min goodman central system


Seems like it trying to start and then cuts out , possibly on overload. Try the machine on fan blow only , that will check the indoor unit to see if that is working. Then try cool or heat function while listening to the machine starting. If you hear a loud humming just as the fan starts, and then it cuts out, It could be a compressor issue. Possibly the start capacitor has failed.

May 27, 2015 | Goodman Heating & Cooling

Tip

Checking out a air conditioner compressor and compressor problems FIRST...


Checking out a air conditioner compressor and compressor problems
FIRST DISCONNECT ALL ELECTRICAL POWER
Ohm the windings
C to R = example 1.2
C to S = example 3.2
R to S = example 4.4 total of C to R and C to S or very close.

Then ohm each terminal to ground you shouldn't get any reading
If the compressor is hot or you tried to start it, the ohms will be close but not exact.
No reading from C to R or C to S open winding or thermal overload.
Let compressor completely cool down then ohm the C to R and C to S again
If it’s an open overload, you will get an ohm reading after it cools down and the overload closes,
you may just need to add refrigerant.
No reading from R to S and C to S open start winding.
In case of any open windings the compressor will have to be replaced.
If the compressor is getting the proper voltage and won’t start, it could be locked up.
You need an Ammeter to check this to see if it’s drawing locked rotor amps (60 amps or above)
You also need to check the run and start capacitor.
A bad run or start capacitor, the compressor won’t run, it will just hum.
If the compressor will run, but quits after a while and all of the above checks out OK.
It could be drawing high amps ( you will need an ammeter to check this out). Dirty condenser or condenser motor not running, overcharge of refrigerant, shunted windings, bad bearings in compressor.
The compressor gets hot and Suction or big line coming in to outdoor unit is warm or slightly cool, you are low on charge or metering device bad or stopped up.
If compressor runs for a while and quits and the suction line is frozen, cold or cool, then the filter, evaporator or condenser coils are dirty or plugged up, blower or fan motor not running and unit going off on high or low pressure switches.

on Dec 29, 2009 | Heating & Cooling

1 Answer

U-Line ice maker compressor won't run


Dose compressor fell too hot ? There could be several things wrong. First you will need to get out your Volt meter to make all test. With unit calling for freeze cycle the condenser fan and compressor should be running. Check at the compressor to make sure your getting power to the over load switch and then through it to compressor. if not then check to see if compressor is to hot and has the switch open> If so then unplug unit to let compressor cool down so switch will close. when switch closes plug unit back up and start up unit check to see it compressor starts if so then you will need to see what is causing compressor to over heat. could be dirty condenser, low charge, fan dropping out, Bad compressor.

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2 Answers

Sub zero. 650 reefer. Significant hum coming from top mounted compressor, but still marginal cooling. Now a louder hum and unit no longer cooling.


Hi roger,

I see you concern, and if the unit does not cool anymore and there is a humming noise then you will need to replace or have your compressor repaired no doubt.

Have a nice day,

mvincentc

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I have an Ingersoll Rand 2545 Electric Air Compressor and since the summer started it runs all day(won't shut off). At night it seems to cycle correctly but when the heat builds up during the day...


I don't know if your unit is exposed to the direct sun light if it is I suggest you create some shade , or if this this unit is enclosed is not getting enough air flow to keep cool.
( this air flow helps to stabilized the sensor that stop and start the compressor )

Sep 26, 2017 | Ingersoll Rand 2545/7100 Electric Air...

2 Answers

Compressor runs and compress air,but when air setting is depleted compressor will not start to compress more air.If you waite it will start some times do think this might the compressor switch


If it doesn't try to start, then it could be the pressure switch. Another suspect could be the thermal overload on the motor. The motor (or just the overload) might be overheating and shutting the unit off, then allowing it to restart when it cools.

Is there any humming, or does it blow the breaker? When ot shuts off, do you hear a brief hiss of air?

If there is humming or breaker blowing on restart, or no hiss of air at shutoff, the pressure switch unloader valve is probably bad. If the air blows off, and there is no humming, and the compressor doesn't reliably start, it is probably the pressure switch. If pressure drops too low, give the pressure switch a tap with a screwdriver. If it starts then, the pressure switch is your problem.

Jun 02, 2011 | Air Tools & Compressors

1 Answer

I have a Uline model SP18 ice maker.Recently the ice maker continues to cycle,Filling with water and at the point when it should stop the compresor turns on then off as it continues to turn,starting the...


It does sound as if you may need a new ice maker. Other than that does the compressor come on to keep the ice cold? If so is it making any type of noises beyond the typical hum?

Jun 10, 2017 | U-Line Icemaker

2 Answers

Intertherm S3QA042K compressor won't restart


You probably need a hard-start kit. A hard-start kit connects to the run capacitor and provides a starting boost for your compressor. If you install a hard-start kit, monitor your a/c for a while because it is possible that the bearings in the compressor are going bad.

Jul 30, 2009 | Heating & Cooling

1 Answer

Air compressor motor stalls under pressure


this sounds like a bad pressure switch.if the unit is not shutting off at the same pressure each time this would be the cause.2 if the pressure is not unloading the air pressure on the compressor side of the unit it will cause the unit to struggle when it starts a cycle because the piston is under a load .how this works is say the unit starts from 0 psi when it get to the desired pressure you have it set on the unit kicks off . the other adjustment most units have on them is what pressure to cycle back on.so when the unit reaches say 100 pounds ,it kicks off and bleeds the air off the compressor side so when it starts back up it wont start up with pressure on the piston.

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