lek2k
07-02-2011, 01:43 AM
I live in an apartment with two wall mounted units, FXAQ50MVE and FXAQ32MVE connected to an outdoor unit 4MXS80EVMA located in a room on the roof. The strange thing is we only get a U4 error on both aircon units when use would be heavy in our building (i.e. on a very hot day). All other times it works :o/ Everyone in the building that I have asked does not have this problem.
Eg. During the heat wave in Sydney last week it did not work at all times of the day. As soon as the cool change came in on Sunday it started to work again without the U4 error.
What could be causing this problem ?
Thanks.
Eg. During the heat wave in Sydney last week it did not work at all times of the day. As soon as the cool change came in on Sunday it started to work again without the U4 error.
What could be causing this problem ?
Thanks.