MT27 has a noisy fan operation. Doesn't always make the clacking sound, tried leveling the machine, cleaned condenser coils. We bought this unit 2nd had for our church's food pantry to keep the meat cold on days of operation. It's so loud that we all breathe a sigh of relief when the Deacon unplugs it. Should I replace the fan blade? Is it the motor?

sounds like you need a professional. condenser is outside, evaporator is inside. what is your question, do you need me to come hold it?

Condenser fan motor or motor wiring is bad. That compressor should never run without the fan. Good luck.

It sounds like you know the problem and the sollution is to clean it. these system require rutine cleanings every 6 months because they have condensation always in the pan

There are 5 basic, yet solvable reasons for what you described. Please pay particular attention to numbers 1 & 2..

1. The humidity extraction level is set to HIGH. Lower it to 32-35%.

2. Air intake filter is dirty or clogged. Turn unit OFF, & Unplug the
Unit, before removing to inspect & clean it, if necessary. If washed,
allow filter to completely dry before reinstalling. DO NOT operate
the unit without the filter.

3. Obstructed air flow. Maintain a minimum of 12 to 18" of clear air
space around the entire unit.

4. Cooling coils are dirty and need to be cleaned. Use warm water & dish washing liquid to
clean the coils. Rinse and wipe dry. Apply a light coating of WD40 to the coils.

5. Ambient air temperature at floor level is between 40 - 60 degrees.
dehumidifiers do not work well between those temperatures
(Unless, you have a Low Temp Unit). This applies mainly to
where the air temperature at floor level is colder than at shoulder level
in basement applications. Raising the unit up off the floor,
onto a sturdy table, counter top, etc, that can handle the weight
of the unit, plus a full tank of water, will usually resolve this
problem.

If none of the above solves the problem, it may be a case of the compressor needs to be recharged with refrigerant gas or that the humidity condenser sensor has failed. These things usually occur in units that are 5 years old or older. It's rare in a unit younger than that. But, it can happen.

I hope this helped you to troubleshoot and solve the problem. Thanks for choosing FixYa.

Hi and welcome to Fixya. I am Kelly.

When the front of a unit is getting very warm to the touch it means that the condenser coils in the back are not being cooled properly.

Open the rear fiberboard cover in the back of the unit and check for lint in the coils and that the condenser fan is running when the compressor is on. Most of the time it is just lint build up on the condenser coils causing this symptom. However the fan can be stuck or not operating. If it is stiking or running slow you can lubricate it with Union 76 turbine oil / Zoom spout turbine oiler. DO NOT use regular oil or the motor will eventually stop working.

I am pretty sure if you clean everything up in the back of the unit that it will work just fine.
Thanks for choosing FixYa,
Kelly

Hi,

Many times a freezer and/or refrigerator do not work right because of a dirty condenser coil...there are also many other things that can go wrong.

If you are hearing a clicking or buzzing then check out the last two tips.

If your refrigerator is running but warm, then...

Check out these tips that I wrote about that... it is a great place to start trouble shooting your unit...and something that you can do rather then calling a repair person to do a simple thing for you...

Refrigerator Condenser Coil Cleaning Refrigerator Repair

Refrigerator Troubleshooting Refrigerator Compressor

Refrigerator Compressor Start Capacitor and Start Relay

Refrigerator or Freezer not Cooling or Getting Cold

Here is a tip that I wrote about refrigerators and the fan noise that they develop sometimes...

Refrigerator Fan Noise

heatman101

You'll need to check the back-pressure on the low-side of the system, you have a faulty compressor. If there is a condenser fan motor make sure it is running when the compressor is on.

The compressor may not be starting. Put your forehead against the nmachine when youturn it on or plug it in, You will feel the vibration of the pump. If it is not coming on, you may need a technician to what determine why it is not working.

Hello. If your outdoor coils are dirty it's a good chance the indoor coils are dirty also. Clean the indoor coils and flush out the condensate line.
I know it's tempting to feel the air and try to decide if the unit is working properly but, you need to use a thermometer and while the unit is running check the temperature at the return air vent and then check the temperature at the supply vent closest to the unit. Remember to let the thermometer set for about 5 minutes before reading.
You should be looking for about 15 degrees F cooling between the return and supply.
If your coils are clean make sure the outdoor fan is operating properly. The air coming out of the outdoor fan should feel warm, almost hot. If not you may need to check your pressures. Good luck and let me know what you find.

Usually short cycling means that High side pressure is getting to high (due to not working condenser fan, or dirty condenser coil), or low side pressure is getting too low (might have low level of freon or restriction in sealed system). low side would drop dramatically if indoor blower is not running, so if air is not circulating thru evaporator coil, coil will freeze up and low side would be much lower then normal. Here is video how I found issue with package AC not coming on. Thermostat call for cool, but condenser would not come on, indoor blower runs ok.