It is harder for someone who is experiencing mood shifts and especially mania to hear and accept that there is something wrong. In his mind he may be feeling attacked even though you didn't intend it that way. His thinking and feelings are skewed because of the mania. While we are definitely responsible for our actions our reaction to things that cause our actions is something we cannot control. It sounds like he needs a med adjustment.

It might help to know that while I can't control how I feel all the time and how I react to certain situations I have learned to accept that my husband is there to help and I need to listen to him.