HiCustomer This sounds like it may be short of gas from your description of the fault. The gas can be recharged as you say and often it is a worth while task. Most often with this fault the gas has escaped through damaged or corroded pipe. It is dependent upon where this leek is as to whether the repair is viable. Some leaks are what we call internal and therefor outway the cost of repair. Other more accessible leaks are well worth repairing and then replenish the gas. Try and get a refrigeration engineer who offers a free call out and estimate service.Thankyou for your question,regards David.
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