Dometic Toilet: “Flashing green Power light”
info RV toilet warning lights
What it means
On the Dometic flush switch / MasterFlush status panel the green Power On light is normally steady when power is present. A momentary flashing green indicates the flush mode is being changed (for example, toggling between Normal flush and Dry Bowl flush by holding the flush switch about five seconds). It is a confirmation, not a fault.
Most likely causes
- Flush mode is being switched between Normal and Dry Bowl (flush button held ~5 seconds) most likely
- Flush button inadvertently held long enough to enter mode change less common
Safe checks you can do yourself
- If you did not intend to change modes, simply repeat the press-and-hold to toggle back to the desired mode.
- Verify the bowl is refilling as expected for the mode you want (Normal adds water after flush; Dry Bowl does not).
How to reset / clear Flashing green Power light
- Press and hold the flush switch about five seconds until the green light flashes, then release, to switch flush mode back to the desired setting.
When to call a technician
The green light flashes continuously and the toilet will not flush, or modes will not stay set, suggesting a switch or control-module fault.
Applies to
Dometic 8700 series MasterFlush · Dometic MasterFlush macerator toilets with Dometic flush switch / status panel
FAQ
What does Dometic Toilet code "Flashing green Power light" mean?
On the Dometic flush switch / MasterFlush status panel the green Power On light is normally steady when power is present. A momentary flashing green indicates the flush mode is being changed (for example, toggling between Normal flush and Dry Bowl flush by holding the flush switch about five seconds). It is a confirmation, not a fault.
How do I reset Dometic Toilet Flashing green Power light?
Press and hold the flush switch about five seconds until the green light flashes, then release, to switch flush mode back to the desired setting.
What is the most common cause of Flashing green Power light on a Dometic Toilet?
The most likely cause is flush mode is being switched between normal and dry bowl (flush button held ~5 seconds).
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Sources
- Dometic 8700 Series MasterFlush Toilet Operation Manual — Section 6.2.3 / 6.3.3 Indicator lights — steady green = power on, momentary flashing green = flush mode changing; Dry Bowl mode change procedure (Dometic)
Note: A brief flash during mode change is normal. A continuously flashing or non-responsive green light is not documented as a normal state and points to a fault.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.