Programmable thermostat hunter 47300

SOURCE: hunter model 42345 programmable thermostat

Which part of the unit? Need more info.

SOURCE: Hunter 44100A programmable thermostat

Sorry Iasumed you had a heat pump t-stat. You will need to exchange to a heat pump t-stat

SOURCE: thermostat won't stay on, even with new batteries on hunter therm

replace the thermoste with a new one its easy to do
1.turn of breaker to doorbell air handler and compresser (outsideunit)
2 take of thermostat lble wires as to wich leters they conect to
3 put on new thermostat enshuring whires are conected to corect letter
4 turn on beakers and enjoy!!

SOURCE: Trouble Installing Hunter Brand Thermostat

on the back of the packaging for the HUNTER MODEL 44155C it states that it is not compatible with heat pumps

SOURCE: Bought 44155c hunter thermostat air won't turn on.

If unit worked before you tryed changing t-stat then its possible the t-stat wires are shorting each other out.take t-stat back off cut back wires a good 6 to 10 inches or if you dont have that much wire to play with just cut back as far as you can and make sure there is no bare wire touching each other ,then just to test unit to make sure its working ok twist yell.,red,green together this should bring both units on and should blow cold.if this works up to this point on the new stat read directions closely there might be a jumper wire in the stat that needs connected usually from y1 to w1 you would install a jumper wire .see if this helps if not write back i have 1 other solution.i hope this helps