Lennox Equipment not specified Error Code 40

Priority condition: Information Only-Dealer The heat pump could not increase the room temperature 0.5°F towards the set point in 30 minutes. Priority condition: Information Only-Dealer Gas Furnace Heating Priority condition: Information Only-Dealer In order to use the gas furnace as a primary heating source (not defrost tempering) when the outdoor temperature is between the high and low balance points, the heat pump: • Must be used for a minimum of 30 minutes and the temperature in the zone not increase by more than 0.5°F • Has not gone into defrost in the 30 minute period. The default for HP Heating Lockout Time default is 120 minutes and will lock the heat pump off when the outdoor temperature is above the high balance point. Selectable range is 60 to 240 minutes. • Go to menu > settings > advanced settings > dealer control center > equipment > smart hub and located HP Heating Lockout Time to verify the lockout time setting. • Check air flow to the zones or zones. • Check discharge air temperatures. • Check calibration of room thermostat. Priority condition: Information Only-Dealer Outdoor Unit and Zoning Priority condition: Information Only-Dealer When the heat pump could not get a zone thermostat to progress 0.5°F towards the set point in 30 minutes the system will lock out the heat pump and switch to the secondary heat source. (Electric heat or if in dual fuel applications the furnace will be used and the system put in heat pump heating lockout timer) default is 120 minutes. It will lock the heat pump off and the gas furnace will finish the heating cycle Set the low balance point and high balance point as close together as possible. (This is a 3°F difference – Example: set high balance point at 25°F and low balance point would set at 22°F). Below the low balance point, the furnace will heat the home / between the low and high balance point, the heat pump and furnace will heat the home. I when the outdoor temperature is above the high balance point, the gas furnace is locked out and all the heat is provided by the heat pump.