Question about Mitsubishi MXZ-2B20NA-1 Mr. Slim Dual Zone Wall Heat Pump 18 Seer

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Have you heard anything about this model compressors leaking at terminal head and if so do you know possible cause

Installed 6 of this model about 1.5 years ago and had 1 system crack steel at discharge line of compressor and now have one leaking at compressor terminal

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Posted on Jan 02, 2017

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SOURCE: p8 eroor code

P8 error is abnormal pipe temperature indoor. If you are running it on heating P8 error will appear because the disc pressure is too high. It could be overcharged.

Posted on Jun 01, 2009

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SOURCE: copper condendsing lines are cold but the air is not cold Try this web site for you manual. It's where I found it.

Posted on Jun 15, 2009

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SOURCE: master compressor will short cycle what is the

Your system may be over charged or the unit is too large for area it is trying to cool

Posted on Oct 24, 2009

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I have a samsung fridge/freezer. Production date 2007. Model#RS20NRSV5/XSA both the fridge an freezer not getting cold The lights are on but no cold air.An cant hear anything working at the back.

Your compressor is not working that's why its not cooling and you cant hear anything.
Possible cause:
  1. thermostat is set to off or defective
  2. defective capacitor that's why your compressor failed to run.
  3. defective compressor motor
  4. Freon leak or no freon at all.
  1. check thermostat switch or relay
  2. check capacitor and wiring.
  3. check compressor motor.
  4. Check Freon pressures.

May 11, 2016 | Samsung Refrigerators

1 Answer

Danby Model # 5661170w2 fridge seems to periodically self defrost w/o me wanting this. What would the usual cause of this be? Thanx for any help that you can offer. Geoff

Check the power plug at the connection. Look for signs of darkened terminals on the power cord plug and the receptacle. Additionally on the side of the compressor the PTC relay and thermal over load contacts can be getting hot and once the unit cycles off there is not enough amperage to re-start the compressor due to a terminal problem. If the compressor is dragging or there are power outages of less than 5 minutes you will get this symptom simply because the unit coolant has not stabilized and the compressor is dead heading against high system coolant pressures so the thermal overload cycles. You would hear clicks about every 4 - 6 minutes if there was a BRIEF power interruption. Anytime there is a power interruption for any refrigerator unplug it for 15 MIT's and then restart he unit so that the coolant pressures equalize.

Lastly the temp control can also cause the problem if it is intermittent. These are the things I would look for as a Tech should you have asked me to service the unit.

Model number note... I was not able to cross the model number you provided so I do not know if this is an automatic or manually defrosting unit. If it is an automatic defrosting unit then there are several other things that can cause this. Defrost thermostat, Defrost heater or the Defrost control / wiring.

Thanks for choosing FixYa,

Sep 22, 2011 | Refrigerators

1 Answer

I have an older 33 gallon horizontal craftsman compressor. In December I turned the compressor on in my unheated garage when the temp had been in the 20's for days. It seemed to run normally at first. Then...

It sounds like the pressure safety valve could be acting up. It is designed to open when the tank pressure it too high and they don't always reset until the pressure is down to nothing. Some models have them included on the gauge manifold and some on the top of the tank under the cover. It is also possible that the upper limit on the motor switch is set a little too high which would also cause the valve to "pop" before the compressor shuts off.

Mar 18, 2011 | Craftsman 33 gal Air Compressor 6 hp...

1 Answer

I have a matsushita compressor model no. D110C21RBX5 supplied as spare by GE for their referigerator. when installed, it stalls ?? i reduced the gas in the compressor and it started running but is not...

Good day,
If you overcharged the unit to the point it stalled, it is possible there is damage to the valves in the compressor. 2 to 3 lbs is nominal and should work, but you need to know the head pressure. Bad valves Will give you a low head pressure.
As well, cause of compressor failure in a R134A system is critical.
Many have had an issue with the internal walls of the condensor carboning up, thus providing inadequate heat transfer.
In those cases, replacing the condenser, dryer and compressor as a package are mandatory.

Mar 04, 2010 | GE Refrigerators

1 Answer

Air compressor keeps running what may cause that

it is possible that a leak has occured or that a sensor has come loose indicating to the compressor module that the air bag still needs to be inflated. proceed underneath to each bag and lines and listen. if no leaks are heard then look for arm near the axle that mayhave come loose also sensors on the bags themselves.

Aug 18, 2009 | 2004 Hummer H2

2 Answers

The mini fridge does not cool. This fridge doesnt use any fans so nothing to check there. The compressor seems to be awfully hot (although I dont know if thats normal) you wont born your hand but it would...

Hi, it's possible,your motor overlay relay has switch off motor, if your days are hot, or if room temp get high, that could happened,unplug ref. let motor cool down for about an hour, if compressor is running, but not cooling, it's possible you got a freon leak, normally ref have a condensate line, that passes through, front of door, that usually get rusted and leak,normally we by-pass it, now if there's a leak, you will have to repair leak first, you will have to change filter drier, vacuum and recharge. no you won't be able to buy freon and tap it up, same princple like vehicle a/c, but, different application, could also be an electrical problem, check motor overload, situated on compressor terminal, remove compressor terminal cover, and you will see overload relay, it's round, has one wire connected to compressor terminal and another connected to wiring harness. also, you can check compressor for short circuit, remove 3 wires from compressor terminal, place one tester lead on copper tubing coming from compressor and next tester lead, place on compressor terminal one by one, if you hear a beep (continuity) from any one of those terminals, compressor windings are faulty, replace compressor, or could just be hot summer months, let it cool down, but remember, remove plug from receptacle. or you are victim of low voltage, low voltages are more frequent in summer months, it could damage compressor winding, or compressor overload relay, let it cool down, and retry it. let me know what happened, before you attempt any repairs. and i can tell you what exactly what the problem are. good luck.

Aug 11, 2009 | Sanyo SR-4911M Compact Refrigerator

3 Answers

1991 Sierra GMC AC control problem

The follwing is a cut and paste from a service bulletin:

Bulletin No.: 461202

Date: May, 1994




A/C Control Head flashes, performs erratically or malfunctions.


Light surface corrosion on the Control Head terminals.


Remove the A/C Control Head and while holding the unit with the terminal
cavity down (toward the floor) so no particles will fall inside on the
circuit boards, polish the terminals on both sides of the cavity with a lead
pencil pink eraser. Do not use an ink eraser or other abrasive such as a
small wire brush or sandpaper, etc. Doing so will remove the terminal
coating and degrade the contact surface.

Performing this procedure, in many cases, will make replacing the Control
Head unnecessary. Using this procedure in conjunction with the A/C circuit
diagnosis found in the Electrical Diagnosis Manual and especially before
replacing a Control Head for any reason is recommended.

After polishing the Control Head terminals, but before reconnecting, check
for proper terminal contact as described in the applicable electrical
diagnosis manual. If contact is good, apply dielectric grease (P/N 12345579)
to the harness connector terminals. Please do not apply grease to the
Control Head.

Jun 29, 2009 | 1991 GMC Sierra

1 Answer

Air compressor trips breaker

check the ground wire most common mistake

Nov 18, 2008 | Air Tools & Compressors

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