You close first the hight presure line when the a/c work for cool and you wait for 2 min. the you close and the low side and you turn of your a/c. turn the power supply fuse of and unconnect the cable. you are ready!!!!
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Re: moving ductless compressor unit
If you remove the lines you will loose the charge. (Against the law to let the freon into the air) This must be done by trained mechanic. If you take the lines off take extra care not to get dirt or anything in them. Tape the ends up. A mechanic can pull the vacuum and recharge it.
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Sounds like it could be low on freon I believe these units have about 1.5 pounds of freon in them and are critical in not undercharging or overcharging them if it is a freon 410 ac unit the pressures should be about 135 and both lines cold if is low on freon a service tec will need to be called to try to repair the leak if possiable
Get a piece of cardboard the same size as the evaporator. Move the temp sensor so the machine will not shut down. Cover the evaporator and watch the suction line. If it frosts back to the compressor then the machine does not need freon.
need more info have you changed thermostat lately or done anything to it... if not make sure you have checked breakers and all are good no tripped breakers... on some homes by code it is required to also have a breaker or disconnect outside next to outdoor unit make sure it is good... is your outside unit running and if so is the larger of the two copper lines cold if not and outdoor unit is running then one of two probels you either have a leak and freon has leaked out or your compressor is not starting either due to a bad capacitor or wiring on compressor may have burnt at the compressor terminals....
FC IS FREON CHARGE, WHAT YOU ARE GETTING IS A HIGH PRESURE CUT OFF FAILURE. THE LABEL PRESURE IS TEST PRESURE. THE RUN PRESURE ON LOW SIDE IN AC MODE IS ABOUT 65 AT 75 T0 80 DEGREES INSIDE AND ABOUT 200-300 HIGH SIDE AT 75 -85 OUTSIDE TEMP. IN HEAT THE LARGE COPPER LINE BECOMES HIGH SIDE HOT WHEN YOU FEEL IT. IF YOUR FREON IS LOW WILL WILL ALSO GET SHUTDOWN. YOU WILL NEED SET OF FREON GAGES AND CONTACT ME BACK
Attach refrigerant gauges to the refrigerant pressure service valves.Have a valve wrench at hand. Start the unit. Using the valve wrench close"tighten" the high side valve. That is the smaller refrigerant line. Watch your gauge pressure as it falls. When the low side pressure(the large line) reaches "0" pressure,tighten the low side valve to turn it off. Once it is tight shutoff the compressor at the outside disconnect power box. This procedure draws the refrigerant into the outside unit so that you can safely move it without losing or recovering refrigerant.
The expansion valve or the capillar tubes are inside the condenser and the gas (freon) is already expanded right outside the condensing unit all the way to the evaporator and beacause the diferential of temperature between this copper line (which is not high pressure anymore) and the outdoor air , there's condensention that freezes up.
when the compressor shuts off most of the freon goes to low side(cold) when it starts..it has a lot of freon to move and it works hard and you hear it loud after it has moved most of the freon over to the high side,the sound is less so not to worry it's normal if it clicks when it starts then you worry
Sounds like your compressor outside is frozen up or (locked up) the smell is outside correct? it could also be your fan also in your condensor unit outside the easiest way is to listen for fluid movement (if your freon is moving then your compressor is working and you need to lean toward a fan motor. check to see if you can move the fan blades in the compressor (outside ) if the problem is in the house then approach in the same way with the power to the unit turned off only If you cannot turn it most likely fan motor replacement is in order, and pressure sensors are not letting your condensor run. theres a few things to try hope i have helped .Honestly it probably would not hurt to let a service man look at it anyway, but this way at least you're a little wiser chris
If you took the door off of the squirrel cage fan for a while the freon gets so cold the compressor cannot pump it. I will trip the outside breaker. Just let me know if during the process did wiring get moved around. Let me know, Sea Breeze
It will definitely escape. In fact, allowing that gas into the atmosphere is kind of illegal, as well as really expensive. An HVAC repairer has the equipment to remove the gas while keeping it trapped, do any plumbing needed to move the unit to it's new location, and then recharge the unit with the same freon (though you might need to add some to account for the additional run of pipe). Also, the electrical box will probably need to be moved.