Wiktor Wise
Dometic electric toilets are often found in RVs and offer two flush settings to help manage water consumption. The normal flush uses 0.85 gallons of water, while the dry bowl flush uses 0.45 gallons. If your Dometic toilet is not flushing, there could be a few reasons. One issue could be that water is not entering the bowl, which could be due to a problem with the pressurized water supply or the vacuum breaker. Another issue could be that water is entering the bowl but not exiting, which could be caused by a blockage or a malfunctioning slide valve. To troubleshoot, you can check for obstructions, ensure the slide valve is functioning, and verify that the seal is not clogged or cracked.
Characteristics and Values Table for Dometic Electric Toilets
| Characteristics | Values |
|---|---|
| Toilet Model | Dometic 8700 |
| Issue | Toilet not flushing |
| Possible Causes | Level switch sensor not working, power issue, or leak |
| Troubleshooting Steps | Disconnect and reconnect power, cut the yellow wire, change flush mode, clean or replace sensor |
| Resources | RV forums, online Q&A websites, mechanic assistance |
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What You'll Learn
Troubleshooting a Dometic toilet that won't flush
First, check if your Dometic toilet has changed to low flush mode. When in low flush mode, the toilet will flush immediately without any additional water when the button is pushed. To change back to full flush mode, hold the flush button for approximately 3-5 seconds, after which the power button should flash, indicating a return to normal water flow.
If your toilet is not flushing at all, there may be a problem with the sensor. Check the sensor in the tank to ensure it is working correctly. In some cases, the sensor may need to be cleaned or tapped with a tool to loosen it. If the sensor is faulty, you may need to cut the yellow wire on the rear of the toilet and install an override switch.
Another potential issue could be a power problem. Check your distribution panel for burned fuses, especially those marked for the toilets or indicated by a red light. You can also use a 12v tester to verify the condition of the fuses.
If your Dometic toilet is leaking, it could be due to a faulty pump or another issue with the toilet's ability to hold water. Check the macerator control board and pump for any signs of damage or malfunction.
Finally, if the above solutions do not work, try disconnecting and reconnecting the flusher panel or shutting down and restarting the power to the toilet.
Remember to consult the Dometic toilet manual for further troubleshooting tips and always exercise caution when performing any repairs or maintenance.
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Issues with the tank level sensor
There are a few ways to resolve this issue. One way is to cut the yellow wire on the rear of the toilet, which is for the tank level gauge. This will disconnect the power to the sensor and allow the toilet to flush. Another way is to add a switch to that lead so that you can turn the sensor off and on again. This will reset the sensor and may fix the issue.
If the above solutions do not work, you can try removing and cleaning the sensor. This has been known to solve the problem. You could also try tapping the sensor with a tool while it is in place to see if that loosens it up.
If none of these solutions work, you may have a more serious issue with your toilet. In this case, it is recommended to seek professional help or contact customer support for further assistance.
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How to change from low flush mode to full flush mode
The Dometic 8700 series MasterFlush toilet offers two flush settings to help manage water consumption. The normal flush uses 0.85 gallons (3.2 litres) per flush and adds water to the bowl after every flush. The dry bowl flush uses 0.45 gallons (1.7 litres) per flush and does not add water to the bowl after the flush.
To change from low flush mode to full flush mode, simply hold the flush button for approximately 3-5 seconds. The power button should begin to flash, indicating that the next flush will be a normal water flow.
If you are experiencing issues with your Dometic 8700 toilet, such as the red light on the DFT staying on and preventing flushing, there are a few troubleshooting steps you can try. Some customers have reported resolving the issue by cutting the yellow wire on the rear of the toilet or adding a switch to the lead to turn it off and on.
Additionally, when installing a Dometic MasterFlush toilet, it is important to follow the correct procedure. This includes removing the old toilet, installing mounting points, reconnecting the waste hose, connecting a freshwater supply, connecting the electrical wires and flush switch, and securing the new toilet with screws.
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Dometic 8700 series MasterFlush toilet settings
The Dometic 8700 series MasterFlush toilet is a premium-quality, user-friendly toilet. It is popular for large and commercial vessels as well as large RVs and Motorcoaches. The Dometic 8700 series offers two flush settings to help manage water consumption:
Normal Flush
This setting uses 0.85 gallons (3.2 litres) per flush and adds water to the bowl after every flush.
Dry Bowl Flush
This setting uses 0.45 gallons (1.7 litres) per flush and does not add water to the bowl after the flush.
To change from Normal to Dry Bowl flush setting, press the "Flush" switch for about five seconds. To change from Low Flush mode to Full Flush mode, hold the flush button for approximately 3-5 seconds, after which the power button should flash.
Some users have reported issues with the Dometic 8700 series toilet, including a leaking toilet and a red light on the DFT that stays on and won't allow a flush. Suggested solutions include cutting the yellow wire on the rear of the toilet and adding a switch to the lead to turn it off and on again.
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What to do when your Dometic toilet leaks
If your Dometic toilet is leaking, there are several things you can try to fix it. Firstly, check for any cracks in the toilet bowl or water valve, as this could be the cause of the leak. If you find any cracks, the toilet will likely need to be replaced, as attempts to repair the cracks using glue or adhesive may not be successful.
If there are no visible cracks, the issue could be related to the seals. The floor flange seal, located between the toilet and the floor, can sometimes come loose or develop gaps, resulting in leaks. Try replacing this seal and ensuring that the bolts are tightened securely. Check the flush ball seal as well, which may need to be replaced or cleaned. On newer Dometic toilets, this can be done without dismantling the toilet.
Another potential cause of the leak could be the flush valve. If the toilet only leaks when the pedal is depressed, then the issue is likely with the flush valve. Check the gasket to ensure it was installed correctly, as an incorrect installation can lead to leaks.
If your toilet is a Dometic 310, there may have been an issue with the original design, as some users have reported leaks between the bowl and the base. In this case, Domestic may have already addressed the problem, and you may need to contact them for further guidance.
Finally, if your RV has a black water tank flushing system, check the water hose hookup in the freshwater compartment. Ensure that you have not accidentally connected city water to that attachment point, as this can cause the tank to overflow.
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Frequently asked questions
To change from a low flush mode to a full flush mode, hold the flush button for approximately 3-5 seconds. The power button should start flashing, indicating that the next flush will be in normal water flow mode.
This issue stems from a level switch sensor in the tank that isn't working correctly. To resolve this, cut the yellow wire at the rear of the toilet or add a switch to that lead to turn it off and on.
This could be due to a power issue. Try disconnecting and reconnecting the flusher panel. Alternatively, tap the sensor with a tool to loosen it or remove and clean it.
