no heat in heat mode on heat pump

by Rick
(florida)

We have a temperature tstat ..its worked great for the last 2 yrs. Last night we needed heat and there was no heat..It shows on but does not come on. A/C side still works fine. As I went through all the thermostat settings I noticed that they were all reset to factory ..1 heat 1 cool no auxiliary heat.. we have a heat pump 1 cool 2 heat with auxillary. Plus the auto cycle from heat to air reset. I put everything back and still doesn't work ..tried jumping the r and w wires and nothing ...could this be a tstat or unit issue?