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Model 291
1-4. ERROR CODE TABLE
(Continued)
DISPLAY CAUSE PANEL BOARD CORRECTION
“E-41”, “E-46” Programming Turn switch to OFF, then back to ON, if display shows any
Failure of the error codes, try to reinitialize the control; if error code
persists, have the control board replaced
“E-47” Analog converter Turn switch to OFF, then back to ON, if “E-47” persists,
chip or 12 volt have the I/O board, or the PC board replaced; if speaker
supply failure tones are quiet, probably I/O board failure
“E-48” Input system Have PC board replaced
error
“E-70 B” Faulty power Have power switch checked, along with its wiring; have
switch, or switch Input/Output board replaced if necessary
wiring; faulty
I/O board
“E-92” 24 VAC fuse Have components, in 24-volt circuit (I.E., hi limit, drain switch)
on I/O board open checked for shorts
904 1-10