Ok I have a janitrol heat pmp that had a Dico thermostat with the wirs from the unit the
Letters G Y Y1 W2 R E O AND IM PUTTING ON A HONEYWELL RTH3100C THERMOSTAT AND I Don't KNOW WITCH Y TO USE AND WERE THE GO CAN YOU HELP PLEASE.

Were the letter designations you listed from the old or new thermostat? If old, were wires connected to both "Y" and "Y1"? If so, you may need a thermostat with capability to control 2-stage cooling.