We just got a new heat pump installed along with an Emerson thermostat. I just noticed when I turned the heat on that there is a flame symbol blinking on the screen. What does that mean.

The Flame icon ( ) will display flashing to indicate that the Aux system is operating. Press to adjust the thermostat below room temperature. The Aux heating system should stop operating.

you can lower temp setting ,or leave it alone it is normal

here is a link to instructions
copy and paste

https://climate.emerson.com/documents/thermostat-1f86ez-0251-instructions-es-es-1570244.pdf


..

Have you checked the codes to see what one blink is, look on the door panel

The problem could be with the heating unit or furnace and not the thermostat.

It's not your thermostat. Go to where your heating system is and give us a make and model number so we may help you.

Is this a heat pump system? If so I would recommend switching the thermostat to aux. or emegency heat at night when it is cold outside. The heat pump will not keep up when the outside temperatures are real cold.

You may have a broken thermostat wire. Disconnect the wires from the thermostat and please note what colors are hooked to which terminals. Cross the R and W wires and see if your heating system turns on. If it does not, you have a broken wire or bad connection at the heating system. If it does start, you have a bad thermostat or bad connection at the thermostat.

check wiring to furnace check wire hook ups on board match letters and colors sometimes installer use what ever wiring they chose on letters

I had this same problem today.  I called Honeywell and they said the flashing broken battery symbol may mean low batteries, or it may mean the battery type is incorrect.  They recommend only non-rechargeable alkaline batteries.  I was using rechargeable NiMH batteries.  Even though they were fully charged, I had the flashing battery symbol and the thermostat relay would not work.  I replaced with alkaline, the flashing battery indicator went out, the thermostat works again.
Odd that it worked for 3 months on the rechargeables after first install. I did notice the broken battery symbol came on after the first few days, but I checked the battery charges and they were good, so I disregarded the symbol until the thermostat stopped working today.  Apparently there is something about the NiMH performance characteristic that the thermostat doesn't like.

I set the thermostat for 70 degrees. It comes on always in auxillary heat and does not shut off when it reaches 70 degrees. It is a heat pump, I am assuming, it might be the thermostat? But when the air conditioner is on, it turns off when it reaches it's temperature.