Question about Manitowoc MAN-CVD2075 Condenser Unit Remote Air Cooled Models QR DUAL0 QD DUAL2C and QY DUAL4C

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Condenser motor cuts out and causes insulation to burn off hot gas line why?

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You mean the fan motor? if power cuts out to it, check sensors or the board. if power is there, replace the motor

Posted on Feb 28, 2014

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SOURCE: I HAVE AN MANITOWOC Q SERIES CVD 2075 UNIT RUNS

Sounds like a bad headmaster valve, bad fan motor, or bad pressure cycling switch for the fan motor. Will need to know operating pressures to troubleshoot. Not really a DIY job unless you have some experience.

Posted on Dec 11, 2010

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Rheem air conditioner fan comes on ,goes off ,comes on but not all of the time reaches room temp then goes off


If your description is in a few minutes, It sounds like a loose wire. If it is the outside fan motor to which you were referring, it should have 3 wires. Find those 3 wires and trace them back to the control board and main contactor. check the condition of any connections and the condition of the insulation. Next, If it is the blower motor, do the same thing.
It also sounds like it could be the control wiring. The blower control wire is the green wire coming from the thermostat and going to the fan control board in the air handler. If you have a loose connnection in the thermostat and/or loose connnection for some splice in that wire, it could interrupt the control power to the blower motor and cause it to cycle.
If it is the condensing fan on the condensing unit, it is the yellow wire. Check the same criteria as green wire above.

As far as the last of your inquiry, the air conditioner reaches temperature then turns off is normal and is not part of the problem your having.
The only other thing I can think of without more information, If the condensing unit comes on and shortly later turns off, the question is whether the condensing fan comes on when the compressor turns on. I had a case today, both the outdoor fan and compressor would not run, but the main contactor was pulled in, and voltage was available. It turns out the dual capacitor was bad and the condensing fan had stopped running and the compressor was cycling on the inherent motor protection inside the compressor. Inside the compressor is a bimetallic overtemperature switch that helps protect the compressor from getting to hot. This is your probable cause and can be determined by checking the temperature of the condensing fan motor and the temperature of the compressor. If both are so hot your hand gets burned, you probably need an new capacitor and outdoor fan motor. If the compressor cools by turning it off, the inherent motor protection will reset if it has not burned out. If after deenergizing the compressor cool off and will not reset, the compressor will have to be changed.


Hope this helps.

Jun 25, 2014 | Goodman CLQ36AR49 Air Conditioner

1 Answer

AC hoses leaking


The condensation will be mostly forming on the suction line to the compressor . It is the moisture in the air forming water droplets when the air hits the cooler pipe. The refrigerant boils off inside the line because of the low pressure cause by the sucking action of the compressor and this boiling off reduces the temperature of the line and so the condensation forms . It will be the larger of the 2 pipes and if this condensation is causing concern then there is a form tube that you can get from the rubbers shops that you can wrap around the line and this insulates the line and so the condensation will not form. When the system is working properly you will notice that the smaller line will be quite hot as the compressor compresses the refrigerant back into a liquid so that at the TX valve in the evaporator(inside the car) releases the liquid into the vacuum created by the compressor sucking on that line. The heat in the car helps boil off the liquid to gas and in doing so removes the heat from inside the car . As it is doing this there is condensation forming on the evaporator fins that drains off out a tube to outside under the car ,hence the pool of water on the road as you drive off.

Apr 20, 2014 | Ford Ranger Cars & Trucks

1 Answer

Disconnected condensation drain on hot water heater.


Tankless or hybrid water heater?

Tankless gas must have special fitting between water heater and vent that has a condensate line fitting. Hot toxic vent gasses traveling up vent pipe cause acidic water vapor to form inside vent pipe that drips back down vent and drips onto heat exchanger and other parts eventually burning hole through expensive metal alloy heat exchanger, rendering tankless computer water heater useless after electric circuitry gets wet and shorts out.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#vent

Hybrid or heat pump type computer water heaters must have condensate drain connected to catch pan located just above storage tank and below compressor. Condensation can form on condenser coils and drip into catch pan where there is primary and secondary drain
http://waterheatertimer.org/Review-GE-Heat-Pump-water-heater.html#maintenance

Read product manual
Gene
h

Apr 17, 2014 | Water Heaters

1 Answer

Bar fridge not cooling


Sounds like you might be low on refrigerant (gas). Unless it is 134a, which you can buy in automotive stores, you are going to need a license to buy refrigerant. The simple way to see if you might need gas is by feeling the larger line going into the compressor (probably insulated). It should be cold if your system is working and charged. If you feel the line leaving your condenser, it should be fairly warm. Be careful as the line leaving the compressor can be very hot and burn you and you may have exposed electrical. If the lines do not feel cold and warm as they should you may be low on gas or you may just have a problem with your compressor or another part of the system. If you're not getting the warm-cold differential, it's likely worth just buying a new unit.

Nov 12, 2013 | Amana ARB1905C Bottom Freezer Refrigerator

1 Answer

Bryant Central AC


Hello, if the motor runs after manually starting it the capacitor is bad and will need to be replaced. If the motor keeps cutting out after a while the motor is overheating and will need to be replaced. The smaller line should be warm to the touch , the bigger line with insulation should be cold and slightly sweating. If both lines are room temp the compressor is not running.

Jun 30, 2012 | Heating & Cooling

1 Answer

How much clearance do i need to leave on top of the water heater between the insulation and the chimmney? is the insulation fireproof?


Gas or electric?

1) Electric heater can be completely covered with insulation except TP valve. Set electric heater on insulated surface. Insulate pipes completely right down to tank.

2) Gas heater is different.
No insulation over combustion area, or gas valve, or air inlet or. No insulation on top of tank that will interfere with venting of dangerous combustion products including odorless CO gas. Foam insulation on pipes should stop 10" short of tank top. No insulation within 6" of the 3-4" inch galvanized vent pipe.

Here's photo with gas water heater insulation tips:
http://waterheatertimer.org/images/Insulate-gas-water-heater.jpg
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

3) Tankless gas. No insulation on box. No pipe insulation within 12". No insulation near vent pipe.

4) How much clearance between heater and chimney?? Not sure what that means. Is that the water heater vent stack? Or where vent stack goes into chimney stack? No insulation on gas flue pipes. Or within 6 inches of 3-4" water heater vent pipes

5) Is insulation fireproof? Everything burns if it's hot enough. If you throw insulation into backyard fire, paper and foil will burn away and insulation kind of falls apart in the heat. Fiberglass insulation cannot be set on fire with a match. Foam pipe insulation will burn.

Dec 02, 2010 | Thermwell Water Heater Blanket

2 Answers

I HAVE AN MANITOWOC Q SERIES CVD 2075 UNIT RUNS FOR 30 MINUTES AND ONE OF THE DUAL FANS CUTS OUT CAUSING INSULATION TO BURN OF HOT GAS LINE PLZ HELP


Sounds like a bad headmaster valve, bad fan motor, or bad pressure cycling switch for the fan motor. Will need to know operating pressures to troubleshoot. Not really a DIY job unless you have some experience.

Sep 29, 2010 | Manitowoc MAN-CVD2075 Condenser Unit...

1 Answer

My whirlpool acq128xp0 runs great one day, then barely starts the second day, It doesnt have the air volume or cooling it use too. Just started this year. Mike


Mike, when you stated it barely starts, to what are you referring? The compressor (condenser) section has an issue when starting or the indoor fan is hard to start?

If the fan does run, and the condenser unit outside is operating and you are getting lower than usual air flow (compared to previously), you may have a dirty filter, or you may have other obstructions at the evap coil inside the furnace or air handler. It could also be the unit is freezing up and ice on the evap coil is cutting down the air flow. Chances are if the coil is freezing over, you will have two issue that cause this:

Air flow issues (dirty coil, clogged air filter, or other obstructions across the evap coil, such as a plastic bag or pet hair, dust, ect.) which will also cause the coil to freeze over.

The other issue that would cause the low air flow is ice that is a result of low refrigerant.

If the system ran fine in the past, I will rule out it may be inproperly sized. Have you recently had a fan motor replaced on the indoor unit. If so, and they under sized the fan motor, then it could be the fan is not drawing, or blowing enough air across the evaporator coil and this will cause it to freeze over.

Look for ice on the suction line (piping) which is the bigger of the two lines coming from the outside unit (condensing unit). It is also the line that has the insulation covering it. If it has ice on it, then freezing is occuring on the evaporator. If so, then airflow issues, or refrigerant levels are usually the main culprits.

The two lines (suction and liquid) running between your indoor and outdoor unit should feel the following way to the touch of your hand:

Suction should be cold and possibly sweating if exposed (in places where no insulation is present).

Liquid line (smaller line) should be warm to the touch, but not too hot, or too cool. Should feel close to the outside ambient temperature if felt by hand.

Look these issues over and let me know.

Scott

Sep 04, 2010 | Whirlpool Heating & Cooling

1 Answer

Compressor gone & Input water line burned in half


Sounds like your condenser is dirty, condenser fan motor is out and it over heated the compressor. Since it get so hot, the plastic tubing is melted by the copper tubing ( plastic tubing is touching the hot copper tubing). It is not worth to fix it. Compressor cost $250-$300, plus condenser fan motor, plastic tubing and labor. U-Line has 5yr parts and labor sealed system Warr. U-Line ph # 800-779-2547

Jan 18, 2010 | U-Line Icemaker

1 Answer

Whirlpool sbs fridge freezer - freezer stopped working


There are 2 or 3 things that would cause this. first make sure the condenser coils are not plugged with dust (vacumn or blow them out) next check to make sure the fan that cools these coils is running, (this is the most likely problem). if both of these check out ok then you would need to check to make sure your interior lights ar going off when the doors are closed as these will add extra heat and cause the center rails to run hot. last and most uncommon would be a freon system problem.  

fyi there is a hot gas freon line that runs in between the doors to prevent exterior sweating. when poor or no air flow problems for the condenser coil exist it causes this area to become hotter. 
One more thing. if you do determine that the condenser fan motor is bad you can put a normal house fan blowing on to the coil to help cool this area down until you can get the unit repaired. 
If you need any further assistance leave me a comment here and I'll gladly get back to you. Thanks Peyton

Feb 24, 2009 | Freezers

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