◊Every 120 seconds the rotation of the motor reverses.
◊NOTE: If the temperature is less than 212 degrees F than fan will be pulsed on for 2 seconds every 60 seconds after the cabinet set temp (B6) and the bypass probe (B5) are satisfied.
cHot air heat circuit is energized
•A signal is sent from terminal 2 of connector X24 on the Gas Board (A20) to terminal 4 of connector X2 on the Upper Hot Air Power Burner and Fan Control (U20) selecting the set speed of the combustion blower.
◊When this speed is attained the signal is sent from terminal 2 of connector X2 on the Upper Hot Air Power Burner and Fan Control (U20) to terminal 3 of connector X24 on the Gas Board (A20)
•A request for heat is sent from terminal 3 of connector X20 on the Gas Board (A20) to terminal 10 on connector X1 on the Upper Hot Air Control Module (N20)
◊24 VAC is sent from terminal 2 of connector X2 on the Upper Hot Air Control Module (N20) to the hot surface igniter (R20).
◊The gas valve is energized allowing gas and air into the burner chamber to be ignited by the hot surface igniter.
◊The Upper Hot Air Burner Control Module (N20) senses at least 1.5 micro amps DC from the Flame sensor (P1) at terminal 3 of connector X2 and sends a signal from terminal 2 of connector X1 to terminal 10 of connector X25 on the Gas Board (A20)
dWhen the Upper Burner Assembly has proven flame, the Lower Hot Air heat circuit is energized
•A signal is sent from terminal 8 of connector X24 on the Gas Board (A20) to terminal 4 of connector X2 on the Lower Hot Air Power Burner and Fan Control (U21) selecting the set speed of the combustion blower.
◊When this speed is attained the signal is sent from terminal 2 of connector X2 on the Hot Air Power Burner and Fan Control (U21) to terminal 8 of connector X24 on the Gas Board (A20)
•A request for heat is sent from terminal 3 of connector X22 on the Gas Board (A20) to terminal 10 on connector X1 on the Hot Air Control Module (N22)
◊24 VAC is sent from terminal 2 of connector X2 on the Hot Air Control Module (N20) to the hot surface igniter (R20).
◊The gas valve is energized allowing gas and air into the burner chamber to be ignited by the hot surface igniter.
◊The Hot Air Burner Control Module (N20) senses at least 1.5 micro amps DC from the Flame sensor (P1) at terminal 3 of connector X2 and sends a signal from terminal 2 of connector X1 to terminal 10 of connector X25 on the Gas Board (A20)
eThe heat circuit will remain energized until the cabinet set temperature is reached
fWhen the condensate box is heated to 140 degrees F at the B3 probe, 120 VAC is sent from terminal 5 of connector X12 to the condenser valve (Y1) until the temperature drops.
gIf the “Crisp and Tasty” mode is selected