Troubleshooting; Disposal - Dometic MasterFlush 7640 Installation And Operating Manual

Troubleshooting

8 Troubleshooting
Problem
Flush cycle operates
correctly but water in the
bowl empties slowly or not
at all.
Macerator pump makes
unusually loud noise or
continually trips breaker.
Flush cycle is not
activated after pressing
flush pedal.
Insufficient or no water
enters the toilet bowl.
9

Disposal

1. Place the packaging material in the appropriate recycling waste bins
wherever possible.
If you wish to finally dispose of the product, ask your local recycling
M
centre or specialist dealer for details about how to do this in
accordance with the applicable disposal regulations.
16
Possible cause
Discharge piping is
pinched or kinked.
The macerator pump or
discharge piping is
blocked.
Foreign material in pump
chamber.
Electrical power to toilet is
shut off or disrupted.
Flush pedal is malfunc-
tioning.
Circuit board is malfunc-
tioning.
Holding tank is full and
signal from tank has shut
down electrical power to
toilet (if tank level monitor
system is installed).
Water supply line is
pinched or kinked.
Screen in water valve is
blocked.
Water valve is malfunc-
tioning.
MasterFlush7640
Suggested remedy
Check discharge piping.
Clear blockage.
Clear foreign material
from pump chamber.
Check wiring and circuit
breakers (or fuses).
Replace switch in flush
pedal.
Replace circuit board.
Empty holding tank.
Check water supply line.
Clear blockage at water
valve.
Replace water valve.
EN