Isn't cooling after 4 hour's. Gurgling sound from cooling unit and is getting hot. No signs of leaking. Has not been used since 2007.

In many cases of gurgling cooling system, you have a possible head gasket problem starting and the combustion from the engine is pressurizing the cooling system. Check your cooling system thoroughly for evidence of a possible blown head gasket.
Are you loosing cooling system water?
Is your radiator overflow tank being pressurized excessively by the engine. Headgasket problems can sometimes put some much pressure in that overflow tank that it begins to bulge outward.
Check the oil and look for any white/greyish milk shake consistency fluid on the oil fill cap or on the radiator cap. Keep a close eye on your oil and water levels if your gurgling sound continues. This is not normal and again, usually is a sign that there is a possible leak between the headgasket and a water jacket on the head.
Did you overheat the vehicle anytime soon? This will many times breech a head gasket between water jackets and begin spraying water in small amounts right into the engine cylinders, while it pressurizes the cooling system and makes gurgling noises.

The noise you bear is the ammonia and hydrogen trying to circulate. Check k the backside of the unit for yellow residue. If this is found then your cooling unit is leaking and must be replaced. If it is gurgling and not cooling it may be clogged. You can try "burping" the unit. To do this you will have to remove the refrigerator from the cabinet. Make sure the gas is turned off and all power is disconnected from the unit prior to removing from the cabinet. Once the unit is out turn it upside down and let set for a few minutes. The turn it right side up. Repeat this process a few times. Then reinstall, right side up. Reconnect power and L.P. lines. Use a soapy water mix to check for gas leaks. Once installed allow the unit to set for a few hours before turning on. This is not a guaranteed fix and if it does work it may not last long... the only sure fix is to replace the cooling unit.

If you can hear it running and it sounds like it is gurgling or boiling then it is you cooling unit that has leaked. Your cooling unit is charged with hydrogen and ammonia. When the hydrogen leaks it causes the ammonia to boil more rapidly, hence what you hear. You will require a new cooling unit for your refrigerator. This is something that can be done by anyone in just a few hours with no specialized tools needed. You can give Arcticold a call toll free (1-888-782-6665) or check out our online Store I have also attached a how to video for the installation of a Arcticold New Lifetime Warranty cooling unit.

Well yes and no. The gurgling sound is air in the cooling system moving thru the heater core. The cooling system is not full of liquid coolant.
As for the cause of the coolant loss, if you fix the external leak and you continue to loose coolant, the head gasket could also be leaking.

You might need to have your cooling system bled, to get all the air out of it. That gurgling is probably just air being pushed in to the overflow tank. Not to much to worry about though.

it shouldn't be gurgling, has it been laid on its side at some point? anyway,, sounds like it has air in the system,, unplug it and let it stand upright for 24 hours, if the problem still persists,, it may need to be charged, the compressor getting hot is normal , if its very very hot, its because its running constantly trying to cool the unit

Sounds that you are low on coolant so low that the coolant sensor is no longer immersed in it If the coolant sensor is prevented from working, due to low levels of coolant, then the engine radiator cooling fan will not be started and overheating will result. The gurgling you hear is due to air in the system. When the engine is cold remove the coolant reservoir cap. Set the interior heater to max temperature. Top up the reservoir to the maximum limit with water/antifreeze mix (2:1 is usual). Start the the engine. Be prepared to add more coolant mix as air is cleared from the system. When the top hose from the engine to the radiator gets warm give it plenty of squeezing to help shift any air pockets. The fan should also start at about this time. Make sure that the interior heater is blowing hot air. When the gurgling has stopped and no more coolant needs to be added to stay at the max level then replace the reservoir cap and secure it firmly. Allow the engine to reach running temperature. Check all hoses, junctions, gaskets water pump seal etc for any signs of leaks as it would be good to detect any cause for the previous loss of coolant.

It sounds to me like the system is low on refrigerant or the metering device is restricted, the gurgling sound is the refrigerant going thru the evaporator coil. I see this is an upright freezer, so when the unit is running do all the coil tubing(in the shelves) get cold on the top ones and the bottom ones are warmer? This will tell you if the evaporator is starving of refrigerant. Either way you need a service tech to check it out. If the system is low on refrigerant then it leaked out somewhere and will need to be repaired.

Hello Daisy.
The gurgling sound may have been air mixed in with the coolant/Antifreeze.
Have you checked the level of your coolant?
Don't trust the reservoir level. Open the radiator cap itself when the vehicle is cold and check the level there.
If the level is low, top it up and try it. If it is low then it would be a good idea to check the cooling system for leaks.
Hope it all goes well for you.

If your cooling unit is gurgling, then you have air in the system or a bad cooling unit. There is a process known as "burping" that should help repair this. It is a rather lengthy process and will require two people.

1. Access the rear of the refrigerator. Turn off the LP gas to the unit. Remove the LP Gas line and the 12Volt supply. Unplug the fridge.
2. Remove the screws in the rear at the bottom and then remove the screws from the inside.
3. Pull the fridge out and lay it down on it's right side for 8 hours.
4. Flip the fridge on it's top for 8 hours
5. Now the left side, then back to normal.
6. Reinstall the fridge and turn gas back on.

Hope this helps,

Jeff