Electrical Troubleshooting - Dometic 3000 Series Owner's Manual

ELECTRICAL TROUBLESHOOTING

A volt/ohmmeter (VOM) and the Magnum Opus Wiring schematic (page 12) may be required for this section.
Caution: Portions of this section will require that power be applied to the toilet. Keep hands away from
the flush ball, motor drive arm and rotor shaft to prevent personal injury during testing and troubleshooting.
The Magnum Opus control module uses a microprocessor to provide all the automatic and timing functions. The control
module is on the right side under the access cover on the top of the toilet. The control module has input and output
status lights that can be used in troubleshooting the toilet. The program inside the microprocessor is used for both
gravity discharge and vacuum-operated toilets.
The program in the microprocessor monitors the input and output signals during a normal flush cycle. If the inputs or
outputs do not follow the commands of the program, then the microprocessor may go into a "standby" mode and flash
an "error" code. The microprocessor is reset by placing the Mode switch in the "Service" position temporarily, then
returning the switch to the "Normal" position.
Status Light Color
1 Low Level Green
2 High Level Green
3 Valve Closed Green
4 Valve Open Green
5 Service Mode Green
6 Flush Green
7 Add Water Green
8 High Vac Switch Green
9 Holding Tank Full Green
10 OK to Flush Green
11 Do Not Flush Green
12 Water Valve Green
13 +5V Green
ERROR CODES
Status Light No. of Flashes
10 OK to Flush
11 Do Not Flush
11 Do Not Flush
11 Do Not Flush
Function
Water Level Switch in "Low" position.
Water Level Switch in "High" position.
Flush valve Closed Limit Switch engaged.
Flush valve Open Limit Switch engaged.
Mode Switch in "Service" position.
Flush Handle in "Flush" position.
Flush Handle in "Add Water" position.
Always on (vacuum toilet only).
Always off (vacuum toilet only).
On when not in flush cycle.
On during flush cycle. Also provides error codes.
Electric water valve energized.
Input power
Pause
1 .5 sec.
1 2 sec.
2 2 sec.
4 2 sec.
CONTROL MODULE STATUS LIGHTS
Condition
Mode Switch in SERVICE position
VALVE OPEN Limit Switch problem
VALVE CLOSED Limit Switch problem
Flush valve motor relay failure
10