Cleveland Convotherm Combination Oven-Steamer Gas 20.20 Service And Parts Manual page 55

• 120 VAC is sent from terminal 6 of connector X12 on the Control Board
(A10) to the Dehumidification Valve (Y2) to pull the humidity out of the
cabinet down the drain.
◊ In the light and medium modes (one and two drops in the display) the Y2
valve will be energized until the bypass probe (B5) is satisfied.
◊ In the full mode (3 drops in the display) the Y2 valve will be energized
continuously.
When the timer counts to 0 or the core temp probe (B10) reaches the set amount
h
the cycle ends and the steam generator reverts to the standby temperature of 190
degree F
.
•
i The heat circuit will remain energized until the cabinet set temperature is reached
j 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.
k If the "Crisp and Tasty" mode is selected
• 120 VAC is sent from terminal 6 of connector X12 on the Control Board
(A10) to the Dehumidification Valve (Y2) to pull the humidity out of the
cabinet down the drain.
◊ In the light and medium modes (one and two drops in the display) the Y2
valve will be energized until the bypass probe (B5) is satisfied.
◊ In the full mode (3 drops in the display) the Y2 valve will be energized
continuously.
l When the timer counts to 0 or the core temp probe (B10) reaches the set amount
the cycle ends and the steam generator reverts to the standby temperature of 190
degree F.
6 With the combi in the Combi 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 Combi 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 4 of connector X26 to
terminal 2 of connector X12 the Motor Drive (U10)
◊ 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.
7 With the combi in the Rethermalization 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 Retherm symbol