Marathon monitors inc – Marathon Computer AACC 2000 User Manual
Page 45
Marathon Monitors Inc.
AACC 2000 Carbon Nov. 1, 1997
45
Diagnostic alarms
These indicate that a fault exists in either the controller or the connected devices.
Display
shows
What it means
What to do about it
EE.Er
EE.Er
Electrically Erasable Memory
Error:
The value of an operator, or
configuration, parameter has
been corrupted.
This fault will automatically take you into
Configuration level. Check all of the
configuration parameters before returning
to Operator level. Once in Operator level,
check all of the operator parameters
before resuming normal operation. If the
fault persists, or occurs frequently,
contact MMI Controls.
S.br
S.br
Sensor Break:
Input sensor is unreliable or
the input signal is out of
range.
Check that the sensor is correctly
connected.
L.br
L.br
Loop Break
The feedback loop is open
circuit.
Check that the heating and cooling
circuits are working properly.
Hw.Er
Hw.Er
Hardware error
Indication that a module is of
the wrong type, missing, or
faulty.
Check that the correct modules are fitted.
no.io
no.io
No I/O
None of the expected I/O
modules is fitted.
This error message normally occurs
when pre-configuring a controller without
installing any of the required I/O modules.
rmt.F
rmt.F
Remote input failure. the
remote DC input, is open or
short circuit
Check for open, or short circuit wiring on
the remote DC input.
LLLL
LLLL
Out of range low reading
Check the value of the input.
HHHH
HHHH
Out of range high reading
Check the value of the input.
Err1
Err1
Error 1: ROM self-test fail
Return the controller for repair.
Err2
Err2
Error 2: RAM self-test fail
Return the controller for repair.
Err3
Err3
Error 3: Watchdog fail
Return the controller for repair.
Err4
Err4
Error 4: Keyboard failure
Stuck button, or a button was
pressed during power up.
Switch the power off and then on, without
touching any of the controller buttons.
Err5
Err5
Error 5: Faulty internal
communications.
Check printed circuit board
interconnections. If the fault cannot be
cleared, return the controller for repair.