Henny Penny 600 Service Manual page 198

Menu Step
T-13 Outputs
184
H H = = HIGH LIMIT – If "H" is present, the high limit is good. If "H" is missing,
the high limit is tripped out (overheated) or disconnected.
D D = = DRAIN SWITCH – If "D" is present, the drain handle is closed. If "D"
is missing, the drain switch is open or disconnected.
S S = = Power switch "on" interlock circuit: If "S" is present, the power switch
is in the ON position. If the "S" is missing, the power switch is either off,
failed, or wired incorrectly.
4 4 - - H H e e a a d d E E l l e e c c t t r r i i c c a a n n d d 4 4 - - H H e e a a d d G G a a s s F F r r y y e e r r s s :
F F = = The "F" input is always hardwired ON. (These fryers do not have fan
vacuum sensors.)
P P = = "Gas" auto-detect jumper.
• 4-Hd Gas Fryers: This signal is hardwired ON.
• 4-Hd fryers: This signal is hardwired OFF and should never be
present.
M M = = "Electric" auto-detect jumper.
• 4-Hd fryers: This signal is hardwired ON.
• 4-Hd Gas Fryers: This signal is hardwired OFF and should never be
present.
The two sets of P & M signals are interlocked by relays on the I/O board
inside the controller. The controller cannot turn on the gas pilot valve un-
less both PV signals are present. The controller cannot turn on the gas
main valve (main burners) unless both MV signals are present.
F F = = FAN - This is the Fan sensor (vacuum switch) interlock input. When
'F' is present, the vacuum sensor is closed (continuity). When 'F' is miss-
ing, the vacuum switch is open or is disconnected.
P P = = The PV (Pilot Valve) output from the ignition module. The ignition
module turns PV on when it is trying to establish or maintain the pilot
flame.
M M = = The MV (Main Valve) output from the ignition module. The ignition
module turns MV on only when the module has a confirmed "flame
sense" of its pilot flame. Keep in mind that the MV signals are simply "en-
abling" signals for the gas burners – the burners are not actually acti-
vated unless the controller turns the Heat output on.
View/set the status of the controller outputs. If an output is currently on, a
"star" follows the ID letter. If an output is currently off, a line follows the
letter.
F = FAN OUTPUT
I = IGNITION MODULES OUTPUT
H = HEAT OUTPUT
P = PRESSURE OUTPUT
The outputs may be manually controlled using the lighted number but-
tons. The #1 button toggles the first output on and off, the #2 button tog-
gles the second output on and off, etc.
Description