Dometic 8700 Series MasterFlush - Troubleshooting Common Issues; Bowl Empties Slowly or Not At All; Loud Pump Noise or Breaker Tripping; Flush Cycle Not Activating

10
8 Troubleshooting
Problem Possible Cause Service Instruction
1. Flush cycle operates correctly
but water in the bowl empties
slowly or not at all.
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kinked.
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loops should not exceed a total
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c. The macerator pump or
discharge piping is blocked.
a. Check discharge piping.
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c. Close seacocks and clear
blockage.
2. Macerator pump makes
unusually loud noise or
continually trips breaker.
a. Foreign material in pump
chamber.
a. Close seacocks and clear foreign
material.
3. Flush cycle is not activated
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handle.
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from tank has shut down
electrical power to toilet.
b. Electrical power to toilet is shut
off or disrupted.
c. Flush switch is malfunctioning.
d. Circuit board in control module is
malfunctioning.
a. Empty holding tank.
b. Check wiring and circuit
breakers (or fuses).
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4. Insufcient or no water enters
the bowl.
a. Water supply line is pinched or
kinked.
b. Screen in water valve is blocked.
c. Intake water lters are blocked
(in raw water system).
d. Water valve is malfunctioning.
a. Check water supply line.
b. Clear blockage at water valve.
c. Clear water lters.
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bidet operation.
a. Clogged inlet screen at hot or
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mixer valve.
b. Clogged aerator in bidet nozzle
inside toilet bowl.
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is not functioning properly.
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mixer valve and clean screens.
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clean.
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Troubleshooting Dometic 8700 Series MasterFlush Toilet
RAW WATER SYSTEM
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2. Turn off power to toilet.
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discharge.
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container.
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