First make sure that all filters are clean and that airflow over coils is unrestricted. Open the control boxes and look at the capacitors and relay switches. If they are bad it should be obvious.
On Jun 3, 2013, at 2:33 PM, "Alex" <uster@...> wrote:

The aft unit was working very weak, only 2 of the 3 speed (will order some capacitator), and there was a strange smell, I suspect I was loosing the R134a – now I don't hear the compressor kicking it at all (only the fan), so it doesn't cool down the cabin at all.

Why does the compressor not kick in anymore? Is this because there is no more R134a refrigerant?

How can I add more R134a refrigerant? I will see if this leaks again (and cool down the cabin again).

The forward unit has all 3 speed working, was extremely cold, so cold there was ice on the coil (of the compressor) – but now it seems it can not cool down the forward room… is this because the outside temperature is too high or something else (may be the ice on the coil).

Also, why do I have ice on the coil of that unit (and only that one)?

Thankfully, the salon unit is ok with all 3 speeds.

Thanks in advance, sincerely, Alexandre 713-412-6704
SM2K #289 NIKIMAT
Seabrook - Texas - USA

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