Mit StarMex Sys 3 MS-A10VD x 3 & MUX-3D23VD
Hi Experts,
Greetings to all. Newbie here, really appreciate your urgent advise.
Just bought a resale flat and DIY almost all that I with furniture in recently. Realised that the previous owner smoked me saying that the ac was only 1yr+ which in fact when I checked with Mit agent, it was coming 5yrs already when I noticed that the mbr was not cold at all and compressor not running.
Called in a svc guy to check, open up the trunking and found no leak, the pipe length is only <5m (<3m in-door upwards & <2m out-door to my compressor). Gas was completely 0 and so he tried to tighten everything and pump in gas and did a general svcing. It was cold and everything was perfect. But less than on-ing a few times, it's losing its coldness. Set to 25 but when compared to the other 2 rms with same setting,the other 2 rms were cold.
Was on tight budget and did not cater for ac, tried opening up the cover and noticed around the u-shaped copper coil going in and out the fins were badly corroded. When ac on, the incoming pipe surface freezes and then defrost and condensation starts after running for a short while. Near the bottom of the right fins, there seems to have some whitish substance suggesting a gas leak? Else, everything looks and sounded fine. Can I just change the fins (cooling coil) or worst the whole blower unit since the blower model is still available? 1 of the common rm blower is also showing signs of corrosion. the other common rm blower was like brand new as the previous person in that rm did not use ac.
What will the damage if I decide to change the 2 cooling coils or whole blower unit and maybe also run a new piping for my mbr? Anyone can recommend who to look for as my ac svc guy only does general svcing.
Really look forward to experts' advise as I cannot afford to change the whole sys and also re-paint the hse.