how to use remote to change from AC to heat?

Hi You can find how to change ac to heat looking at the service manual. This provides in depth detail of all the feautes the reomote has and how to properly use each feature. Please see the link attached :https://hvacdirect.com/media/hvac/pdf/M-GL_Handler_Service_Manual.pdf: If you have any further questions please feel free to give us a call! Thanks.