Hey I am trying to install mynew Honeywell rth 230B thermostat. The problem is my old wiring had 6 wires connected W R O G Y C. The new Honeywell had 5 W R G RC RH I need help to connect. Anyone had this problem before?

A note from honeywell

Rth 230B" is not a valid product number or phrase, please check the request and re-enter

RECHECK your exact number from the thermostat.