Nortec MH Series - Manual (Page 33)

10-30
Page 29
2008-12-03
1.2 TROUBLESHOOTING
1.2.1 System Faults
Warning Error Cause Remedy
LED Display LED Display
MH Card missing (Test run
possible) MH Card Missing
Red
flashes Red lights No MH Card
installed on the
control board. Install MH
Card or start
test run.
MH Card is Empty
-- -- Red lights No data stored on
the MH Card Install new
MH Card.
MH Card is defective
-- -- Red lights Invalid data stored
on the MH Card Install new
MH Card.
MH Card is incompatible
-- -- Red lights The MH Card is
not compatible
with the hardware
or the basic
settings on the
control board. Install new
MH Card.
Modify basic
settings.
Unit Module B missing
-- -- Red lights No response from
module B. Flat
ribbon cable
interrupted or
disconnected
120V supply cable
disconnected. Plug in flat
ribbon cable,
plug in 120V
supply
cable.
Wrong parameter settings
-- -- Red lights Data of CPU and
MH Card do not
match. Install
correct MH
Card.
Contact your
Nortec
supplier.
Hardware Fault (flash)
-- -- CPU on control
board defective. Replace
control
board.
Hardware Fault (clock)
-- -- CPU on control
board defective. Replace
control
board.