Hi guys got a problem with a infrico pizza prep fridge. The customer had the compressor replaced by an engineer. The previous compressor was a Tecumseh AE4430 on R134a, the one he fitted is a AE4440 on R134a. The cabinet is working and cooling down to 3 degrees but the dryer is red hot even in a cold room, so when the kitchen gets hot the fridge starts to struggle and compressor is turning off on overload. When running from start the suction pressure is around 15psi. The condensor is clean and the condensor fan is working fine, i upgraded the fan from a 18w to 25w to see if it made much difference but it didnt. The gas dosent seem to be condensing. The difference between a AE4430 and AE4440 is only 1 or 2 CC so could this cause a condensing problem? or does it sound like a blockage in condensor? Could this be rectified without replacing compressor (maybe fitting larger condensor coil), any advice will be greatly appreciated, thanks in advance!