Thought I would put this one out there. Have a customer with a 2 year old samsung mini split (ductless) three in one. We have done a PM on it every year and its been fine, untill now. The refridgerant charge is good, but all three heads blowing warm air with low air flow so I checked the fan cages. They were totaly clogged with stuff. I have seen this before but here is the wierd part, the house is immaculately clean, the filters nearly spottless(husband cleans them monthly) and even the coils are all clean only the blowers are dirty The only clue I have is that they only run the units on low(they are elderly and trying to save on electric bill). Could the low speed be allowing anything that did'nt get filtered to stay on the blades?
Its just odd, I'm calling Samsung on Monday but was curious if anyone else had seen something simular. thanks for any responses or Ideas