Coleman Mach thermostat in Jayco RV replaced with Honeywell

Had issues with the heat and AC not kicking in at the set temperature. This was much cheaper than replacing it with another Coleman unit. Wires went to the terminals on the new unit as follows:
yellow wire to "Y" terminal
White wire to "W" terminal
Red wire to "R" terminal. I left the pre- installed jumper wire in place.
Green wire to "G" terminal
The gray and blue wires we not used. I taped them up and tucked them away.

[@A20FtPancake]

I'm having the same issue on the same thermostat model you replaced, is this still working for you?