SeaLand 3000 - Manual (Page 11)


TRoubLeSHooTING
A volt/ohmmeter (VOM) and the appropriate Toilet Wiring Diagram 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 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 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.
A safety circuit in the control module monitors flush ball operation. If foreign objects or low voltage prevent the flush
ball from closing, this circuit prevents personal injury or damage to the flush valve motor. If this condition occurs,
reset the control module by placing the Mode switch into the SERVICE position temporarily, then returning it to the
NORMAL position.
CoNTRoL moDuLe STATuS LIGHTS
Status Light
0 OK to Flush
 Do Not Flush
 Do Not Flush
 Do Not Flush
 Do Not Flush
eRRoR CoDeS
Condition
Mode Switch in SERVICE position
VALVE OPEN Limit Switch problem
VALVE CLOSED Limit Switch problem
Insufficient vacuum in system
Flush valve motor relay failure No. of Flashes


2
3
4
pause
.5 sec.
2 sec.
2 sec.
2 sec.
2 sec.
Status Light
1 Low Level
2 High Level
3 Valve Closed
4 Valve Open
5 Service Mode
6 Flush
7 Add Water
8 High Vac Switch
9 Holding Tank Full
0 OK to Flush
 Do Not Flush
2 Water Valve
3 +5V 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 Switch on control panel engaged.
Add Water Switch on control panel engaged.
High vacuum in system (allows toilet to flush).
Full holding tank (prevents toilet from flushing).
Signal to “OK TO FLUSH” light on control panel.
Signal to “DO NOT FLUSH” light on control panel.
Electric water valve energized.
Input power present.
VAL
VE CLOSED
VAL
VE OPEN
SER
VICE MODE FLUSH
ADD W
ATER
HI V
AC SWITCH
HOLD T
ANK FULL
OK T
O FLUSH
DO NOT FLUSH
HI LEVEL LO LEVEL
W
ATER V
AL
VE
+5V
LED 13 LED 12 LED 1
1
LED 10 LED 9 LED 8 LED 7 LED 6 LED 5 LED 4 LED 3 LED 2 LED 1