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My TDD-2 was not chilling to the desired temperature, I replaced the thermostat prior, and that did not fix problem. I called a technician who came out and was able to verify that the freon was low. He also, said that it is pretty hard to determine a leak and that it may just need a recharge. He said I would know if it is a leak in about three months. The system ran for about 4 months and the symptoms are back again. I was charged a 180.00 fee for the recharge and diagnosis. I think this guy was pretty good, but don't know if I am in jeopardy of being charged an arm and leg for the revisit to fix the actual problem. I think my evaporator coil could be bad, I am not the expert, I could probably replace but I don't have the proper equipment to diagnose problem so, I am leaving this one to a technician. I bought this system at Superior Products in San Jose Ca. in 2006.

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Sealed systems can leak at the evap and/or the condenser. Charge ports on the compressor can develop a leak too. If a drier was sweated in and the Schrader valve was left in when it was being installed, there will be a leak there. Leak detectors now a days are electronic sensors and are more sensitive and safer to use.

Posted on Mar 13, 2017


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