e When the condensate box is heated to 140 degrees F at the B3 probe, 220 VAC is
sent from terminal 5 of connector X12 to the condenser valve (Y1) until the
temperature drops.
f When the timer counts to 0 or the core temp probe (B10) reaches the set amount
the cycle ends.
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
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)
If the combi fan is in the normal setting 220 VAC is sent from terminal 5 on
connector X11 through the normally closed auxiliary contacts of contactor
K57 to the coils of contactors K55 and K56
The K55 and K56 contactors close sending 220 VAC through the Q56
overload to the motor and the motor turns at a high speed.
The normally closed auxiliary contacts of both K55 and K56 open
preventing the K57 contactor from energizing.
If the combi fan is in the reduced setting 220 VAC is sent from terminal 6 on
connector X11 through the normally closed auxiliary contacts of contactors
K55 and K56 to the coil of contactor K57
The K57 contactor closes Sending 220 VAC through the Q57 thermal
overload to the motor and the motor turns at a reduced speed.
The normally closed auxiliary contacts of K57 open preventing the K55
and K56 contactors from energizing.
For the first 2 minutes 220 VAC is sent from terminal 4 on connector X11
through the normally closed auxiliary contacts of contactor K5 to the K50
contactor coil
K50 contactor closes and the motor turns CW
The normally closed auxiliary contacts on K50 open preventing the K5
contactor from energizing.
For 15 seconds the motor is de-energized and allowed to coast.
For the next 2 minutes 220 VAC is sent from terminal 3 on connector X11
through the normally closed auxiliary contacts of contactor K50 to the K5
contactor coil
K5 contactor closes and the motor turns CCW
The normally closed auxiliary contacts on K5 open preventing the K50
contactor from energizing.
NOTE: If the door switch (S7) opens by the door opening, then the fan circuit
is de-energized. Then the motor will be pulsed in the opposite direction to
“break” the fan. This is to stop the fan quicker for the operator.
c The hot air heat circuit is energized
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