Freezer door does not have the vacuum suction that it did have

Hello dotty26 - The door gasket should be securely closing with no resistance. You may try lubricating the door gasket with petroleum jelly to make it easier to open as well.

If you have too much weight in the door or someone pulled down in the door, it gets twisted. Try lifting up on the bottom outside corner of the door to straighten it up. You might have to loosen the top hinge to reseat it.

Your door seal is defective. Check that it is clean, that the door has not been bent or twisted, replace the door seal, adjust the door or both.

When the temp gets back down to running temp the vacuum will return if the gaskets are properly installed.

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If it is R22 then it will be about 11psig on the suction side. This should give you a -18 degrees across the coil.

remove the back panel of the freezer and see if the evaporator is a block of ice (evaporator is something kind of like a radiator) if is a block of ice replace the defrost thermostat ( a little sensor whit tow wires)
and the defrost timer ( usually next to the refrigerator thermostat inside the fridge side)

you can find this parts at your local appliance part store or online here is a link good luck

Depending on the age of the unit it does take a 134a freon charge or 12 or 22. when fully charged unit should cool properly. need to check door seal for suction issue. the unit does need a good charge to cool. it could also be a restricted sealed system issue.

There is a vacuum build up in the freezer compartment when you close the door. This can make the door difficult to open. You can overcome this by sticking a small lollipop stick to the bottom part of the door gasket. This will act as a vacuum breaker.

You may need the hinge adjusted or a new door gasket but you might first try putting a layer of vaseline on the gasket. If none of those things help the problem is probably other than the door seal.

Normal operating pressures will change as the freezer reaches the selected temperatures on the inside. Normals of minus 14 degrees on the inside would be around minus 4 psi on the suction and 150 pis on discharge. Now checking the pressure will require a set of guages that have been purged with the same freon before connecting with the suction line on freezer. If not purged the suction line will draw outside air into the system and cause freezing of air and moisture inside the capillary tube rendering the freezer inoperative, Hope this helps, Sea Breeze