Unionaire air conditioner problem code E4

Solved/Closed
sahbani -  
 Anonymous user -
Hello,

Configuration: Windows XP / Safari 535.7

I have a Unionaire air conditioner, it works properly in cooling mode but in heating mode the evaporator fan runs directly and the compressor does not start. After some time, it displays the E4 code. Please, what is the problem?

1 answer