Hello I have a Honeywell TH8000 thermostat with a Coleman heat pump and coleman variable speed electric furnace.

Sometimes the thermostat emergency red light (top right corner) blinks 4 times in a loop. This can happen on both the Heat and EM Heat mode.

I have searched the WEB for the info about this possible code but cannot find anything.

Anyone knows what it refers to?

Hello I have a Honeywell TH8000 thermostat with a Coleman heat pump and coleman variable speed electric furnace.

Sometimes the thermostat emergency red light (top right corner) blinks 4 times in a loop. This can happen on both the Heat and EM Heat mode.

I have searched the WEB for the info about this possible code but cannot find anything.

Anyone knows what it refers to?

Open the control panel on the heat pump

It may have a guide in there


Or try this http://www.grasslandscorp.com/info/8000/OwnerManual.pdf