Table of Contents
What causes the suction line to get hot?
The external suction line running hot means it’s running on heat mode. The real suction line is inside the unit and runs between the reversing valve and compressor, that part shouldn’t be hot at any time.
What does it mean when your freezer compressor is hot?
A compressor can run hot for a variety of reasons, including lack of refrigerant in the appliance or a refrigerator thermostat that is set too low, thus causing the compressor to work too hard. Check your refrigerator thermostat to be sure it is set at an appropriate temperature.
Should a refrigerator compressor be hot to the touch?
It’s normal for this temperature to be as high as 300 degrees Fahrenheit, but it should never be higher. If the temperature rises to 320 degrees, the refrigerant will start to break down. If it gets hotter than 350 degrees, the lubricating oil inside the compressor will start degrading.
Should the suction line be hot in heat mode?
Suction line temp should be 5°-15° cooler than the outdoor temperature. The liquid line should be 3°-15° warmer than the indoor temperature.
What causes a cool discharge line on a running compressor?
LOW EVAPORATOR PRESSURES AND TEMPS. Low evaporator pressures also may cause a high compressor discharge temperature. When evaporator pressures are low, the compressor must compress refrigerant from this lower evaporator pressure to the condensing temperature. Thus, the compressor’s discharge temperature will be higher.
How do you cool down an overheated compressor?
- Pull the disconnect or turn off the breaker now.
- Remove the lid from the air conditioner so we can access the top of compressor.
- Run a garden hose over the compressor for 10-15 minutes straight to cool it off.
- After 10-15 minutes has elapsed shut off water and put the lid securely back on.
Can a freezer overheat?
Both refrigerators and freezers are cooled by refrigerant. A deep freezer hot on outside, or a fridge freezer heating up on the outside, may be part of perfectly normal operation. When a chest freezer, or any other kind of freezer for that matter, overheats, the problem can often be traced to the compressor.
Why is my suction line not cold?
The Copper Pipe (Suction Line) should be sweating and cold to the touch during a hot day. If it is not cold, your compressor could be off (bad capacitor/ hard start kit) or low on Refrigerant. Be Careful because this usually indicates a problem with the compressor or wiring.
Why isnt my suction line sweating?
The temp check at the suction line near the compressor is to check superheat. Your drain isn’t draining due to poor humidity removal from air passing over coil, hence the sweating you see. Laser thermometer is ok, but the best is a clamp type thermometer.
What causes high refrigerant discharge pressure?
One common cause of high discharge pressure is the cooling medium (air or water) flowing across the condenser: either there is not enough or the temperature of the cooling medium is too high. This is normally easy to identify with a simple visual inspection of the condenser.
What causes a refrigerator compressor to stop working?
Compressor suction pressure high Fractured compressor valves, causing the compressor capacity to fall. Evaporator load too high, caused by room items recently changed entry door left open. Excess refrigerant charge. This fault is combined with a low compressor superheat and indicates liquid in the suction line.
What happens when the suction line on a refrigerator freezes up?
Once that happens, the refrigerant will start to boil in the suction line. This cause the temperature of the suction line to drop, and just like in the evaporator, cause the condensation to freeze. Eventually the freezing works its way all the way back to the compressor, which is where the trouble can really start.
Why is the suction line on my air conditioner so hot?
AND THEN, because there is no freon getting into the suction line, the compressor is essentially making a vacuum on the suction line, which will make a hot. That’s why when the system is low on freon and you keep the system running, eventually the liquid line will be frozen and the suction line will be warm. That’s not what happens at all.
Why is the pressure at the compressor lower than the evaporator?
As the refrigerant travels the length of the suction line, there will be an associated pressure drop from friction and/or restrictions caused by long runs of suction piping, oil accumulation, filters, or valves. This will cause the pressure at the compressor to be lower than the pressure at the evaporator outlet.