Dometic 4300 Series - Intended Use and Benefits; Intended Use; Product Benefits

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Troubleshooting Dometic 4300/4400 Series Toilets
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Troubleshooting information
Wiring diagram
Symptom Possible Cause Service Instruction
1. Toilet will not ush and water will
not enter toilet bowl.
Fuse blown or circuit breaker is
tripped.
• Checktoiletfuseorcircuit
breaker at DC distribution panel.
• Checkforloose/defectivewiring
between power source and toilet
terminal block pins 5 and 8.
• Checkforreversepolarityof
incoming power.
• CheckfordefectivediodeD1at
pin 5 of terminal block.
2. Water enters toilet bowl, but
toilet will not ush.
Electrical or mechanical failure
related to ush valve.
• Checkforloose/defectivewiring
between ush switch and toilet
terminal block pins 2 and 3.
• Flushswitchmaybedefective.
Replace if necessary.
• Checkforlooseushballmotor
wires at terminal block pins 2
and 8.
• Flushballmotormaybedefec-
tive. Replace if necessary.
• Flushmotordrivearmfailure.
See p. 12 for replacement
instructions.
• Drivelinkagefailure.Seep.7for
replacement instructions.