Dometic 3000, 3100 owner manual Symptom 3. Flush valve will not close

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TROUBLESHOOTING (cont’d)

SYMPTOM 3. Flush valve will not close.

Condition/Procedure

Mode Switch is in SERVICE position:

Foreign object prevents the flush valve from closing and the safety circuit locked flush valve in open position:

Check for error code at “DO NOT FLUSH” status light.

Check the voltage output to the flush valve motor at jack 6, pins 9 and 10 on the control module as follows:

Corrective Action

•Return switch to the “Normal” position.

•Reset the control circuit by putting the Mode Switch in the SERVICE position temporarily, then returning to the NORMAL position. If the flush valve did not close, go to next step.

•If showing error, follow the instructions in the Error Code Corrective Procedures section.

•Pull the control module out as far as the control cables will allow. Locate jack 6 at the bottom of the control module.

•Remove the green wire from pin 5.

•With DC voltmeter test leads across pins 9 and 10, flip the Mode Switch between the SERVICE and NORMAL positions. If voltage is present for about two seconds in the NORMAL position, the flush valve motor or related wiring is defective.

•If voltage is not present, replace the control module.

SYMPTOM 4. Water will not enter toilet bowl during a flush and when the flush handle is raised in the “Add Water” position.

Procedure

Place the Water Level switch in the LOW position. Check the “WATER VALVE” status light while pressing the flush handle down:

Corrective Action

•If the “WATER VALVE” status light comes on, the water valve filter screen may be plugged with debris, or the water valve or its related wiring is defective.

•If the “WATER VALVE” status light remains off, replace the control module.

•If voltage is not present, replace the control module.

SYMPTOM 5. Water will not enter toilet bowl when the flush handle is raised in the “Add Water” position.

Procedure

Flush the toilet, then place the Water Level switch in the LOW position. Then check the “LO LEVEL” status light while raising the flush handle:

Corrective Action

•If the “LO LEVEL” status light comes on, replace the control module.

•If the “LO LEVEL” status light does not come on, the flush switch or its related wiring is defective.

SYMPTOM 6. Water Level switch has no effect on water level in the “Low” or High” position.

Corrective Action

• Replace control module.

SYMPTOM 7. Flush valve will not open when Mode Switch is in the “Service” position but opens during a normal flush cycle.

Corrective Action

• Replace control module.

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Contents Dometic Corporation Sanitation Systems Important NoticeToilet Model Identification Table of ContentsImportant Information Before Operation Operating Instructions ServiceNormal Manual OverrideProper Cleaning Toilet Bowl and Seal Flush Operation Timing ChartWinterizing Flush and Forget Cycle TimeMajor System Maintenance Maintenance ScheduleClearing Discharge Lines Spare PartsSanitation System Components Sanitation System Components cont’d Marine Sanitation Regulations Deodorants and Special TissueControl Module Flush Mechanism ComponentsManual Flush Operation Toilet System Electrical Specifications12VDC 24VDC Error Codes TroubleshootingStatus Light Function Status Light No. of Flashes Pause ConditionTroubleshooting cont’d Symptom 3. Flush valve will not close Symptom 9. Water will not shut off and overflows the toilet RV Wiring Diagrams RV Vacustat Panel Option RV Vacuflush Status Panel Option Marine Wiring Diagrams Marine Vacustat Panel Option Vimar Flush Switch OptionMarine Wiring Diagrams cont’d Marine Wiring Diagrams cont’d Series Vacuum Pump DC Circuit Option DimensionsModels 3006 Models 3009 3109 Models 3309 3409 Master Sanitation Distributors Customer ServiceExclusions ONE-YEAR and TEN-YEAR Limited Warranties BoatsImplied Warranties Other Rights600344321 4/05

3100, 3000 specifications

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