fitting a fan speed controller is great, if you have a variable speed fan motor, i.e. invertor. and if you have an invertor motor, why would you fit a speed controller? units will work with an outdoor air inlet temp of = 7 deg c. dry bulb. 6 deg c wet bulb. anything lower than this , you will expierience lower than normal operating conditions.
fridgeman
January 2009
Fit a fan speed controller to external C/U
Donttouchitunlessyouknowwhatyouaredoing
November 2008
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Try fixfault.com to fix portable air conditioners.