•
A request for heat is sent from terminal 3 of connector X21 on the Gas Board
(A20) to terminal 10 on connector X1 on the Steam Burner Control Module
(N21)
◊
24 VAC is sent from terminal 2 of connector X2 on the Steam Burner
Control Module (N21) 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 Steam Burner Control Module (N21) 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 11 of connector X25
on the Gas Board (A20).
•
The heat circuit continues until both the cabinet set temperature and the
bypass probe (B5) are satisfied
◊
NOTE:
If the set temperature is above 212 degrees F the hot air circuit
will be energized (after the bypass probe is satisfied) until the
compartment setting is reached. The steam circuit always takes
precedence.
d
When 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.
e
When the timer counts to 0 or the core temp probe (B10) reaches the set amount
the cycle send and the steam generator reverts to the standby temperature of 190
degrees F.
f
5
With the combi in the Hot Air mode with time on the timer, the door closed and the
start switch is depressed
a
The front display will include a lighted bar under the Hot Air symbol
•
When the heat circuit is energized the heat symbol will be energized
•
The cooking mode symbol will be energized.
•
The time display will invert and begin to count down.
b
The fan circuit is energized by the Control Board (A10) transmitting and
receiving a signal from terminals 5,6,7 and 8 on connector X10 to terminals 3,4,5
and 6 of connector X28 on the Gas Board (A20)
•
The Gas board (A20) Transmits a signal from terminal 3 of connector X26 to
terminal 3 of connector X12 the Upper Motor Drive (U10.1)
◊
240 VAC 3 phase is sent from the Motor board to the Oven Fan motor
(M1)
◊
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.
•
The Gas board (A20) Transmits a signal from terminal 7 of connector X26 to
terminal 3 of connector X12 the Lower Motor Drive (U10.1)
◊
240 VAC 3 phase is sent from the Motor board to the Oven Fan motor
(M1)
