Henny Penny OFE-322 Technical Manual page 9

1-4. ERROR CODES
(Continued)
DISPLAY
"E-20A"
Vacuum
switch failure
(stuck closed)
"E-20B"
Draft fan or
vacuum
switch failure
(stuck open)
"E-20C" Ignition modules
not responding
"E-20D"
Pilots not lit or
no flame sense
"E-31"
Fan switch jumper
wire missing
"E-47"
Analog converter
chip or 12 volt
supply failure
"E-48"
Input system
error
"E-70"
Faulty POWER
switch or switch
wiring; faulty I/O
board
"E-92"
24 VAC fuse
on I/O open
1-6
CAUSE
Press the timer button to try the ignition process again,
and if "E-20A" persists, check the air switch per Vacuum
Switch Section
Press the timer button to try the ignition process again,
and if "E-20B" persists, check the vacuum switch per
Vacuum Switch Section or the blower motor per Blower
Motor Assembly Section
Press the timer button to try the ignition process again; if
"E-20C" persists, check the ignition module per Ignitor
Module Section or the spark ignitor per Pilot/Ignitor
Assembly Section, or the I/O board per I/O Power Supply
Boards Assembly Section
Press the timer button to try the ignition process again; if
"E-20D" persists, check the ignition module per Ignitor
Module Section, or the I/O board per I/O Power Supply
Boards Assembly Section, or the flame sensor per Flame
Sensor Section
Check for jumper wire on 12-pin connector & add if
missing
Turn switch to OFF, then back to ON; if "E-47" persists,
replace the I/O board, or the PC board; if speaker
tones are quiet, probably I/O board failure
Replace PC board
Check POWER switch checked, along with its wiring;
replace input/output board if necessary
Check for shorted component in 24 volt circuit;
(i.e., high limit, drain switch, vacuum switch)
Model OFE/OFG-321,322,323,324
PANEL BOARD CORRECTION
109