I started a new thread for you.
Third service call last night. The guy changed some wiring on one of the boards. outdoor unit went in to defrost so he thought he had it. BUT it only defrosted for a minute or two just started to melt some of the ice. So it is still a block of ice and I have to use the emergency heat to heat my home. This thing seems like an expensive electric furnace. They tell me they are getting some one from Mitsubishi to come look at it now. Any one have any problems like this, or was I just misinformed about the system and this is how it is supposed to work?
Well the system seems to be working now. The Mitsubishi guy that came walked up to the outdoor unit and within one minute he said yes there is a problem. Went inside and found that the compressor was basically locked in to low speed. He changed over some wires and we tested it. Compressor speed increased and all of a sudden I now have heat. Such a small overlooked item by all the other people and the installers. Glad it is working now, and so far it seems to be working well.