| Malfunction (symptoms) |
Probable Cause |
Corrective Action (Remedies) |
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| Overflow of waste water |
Holding tank full |
Drain and flush |
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|
Drain blockage |
Remove blockage |
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| Slow draining of waste water |
Drain or vent blockage |
Clear drain or vent. |
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| Waste water leakage in coach |
Damaged pipes or loose connections |
"Check and tighten thrreaded joints (sleeves on drains |
and sink strainer connections). If necessary |
install new teflon tape thread sealant. Replace damaged pipes." |
|
|
| Waste water leakage below coach |
"Damaged tanks or plumbing parts |
loose connections" |
"If joints at holding-tank bosses leak |
remove tank and tighten connection. Repair or replace damaged tanks or plumbing pipes as required." |
|
|
| Waste valve sticks in open or closed position |
Clogged or damaged valve. |
Clean or replace valve. |
|
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| Excessive odors in coach |
Odor-control chemical needed |
Add odor-control chemical to each tank through shower and toilet. |
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|
|
Blocked vents |
Unblock vents. In snowy weather; remvoe any snow blockage |
|
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| Indicator lamp inoperative or in error |
"Bulb burned out |
defective circuit or switch" |
"Replace bulb |
or check and repair as necessary" |
|
|
| RCT Light flickers on and off |
Faulty speed sensor |
Replace. |
|
|
| "ETY Light is off |
but holding tanks are empty" |
ETY Bulb burned or too loose. |
"Replace defective bulb |
tighten loose bulb" |
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|
|
Poor circuit connections |
Remove any terminal corrosion on outside connections and tighten loose ground wiring connections |
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|
Faulty wiring or connections in holding tank sensor circuit |
"Repair circuit with either one of the sensor leads shorted |
the empty light will not operate" |
|
|
|
Open ETY indicator circuits or shorted |
Repair circuit |
|
|
|
Open or shorted ETY indicator circuit |
Repair circuit |
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| Noticeable odors outside of coach with waste destruction system operating |
Worn or damaged waste destruct hoses |
Replace. |
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|
|
Injector junction leak |
Remove injector and replace asbestos gaskets |
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Defective injector |
Replace |
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Vacuum siwtch and speed sensor switch not controlling |
Inspect and correct waste destruct system operation |
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| RDY or RCT indicators do not light |
Poor circuit connections |
Remove any corrosion and tighten loose wiring connections and harness connector |
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|
|
Blow inline fuse |
"Replace inline (5 amp) fuse. If fuse blows again |
check and repair shorts. DO not increase rating of fuse." |
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|
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Worn or defective switch |
Replace waste destruct switch on domestic panel |
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| RDY light on but RCT does not light after exceeds 35 mph. |
Burned out or loose RCT bulb |
Replace or tighten |
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|
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Poor Circuit connections |
Remove an corrosion and tighten loose wiring connections |
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Defective reaction circuits on domestic panel |
Ground blue lead of sensor; if RCT lamp does not light; repair or replace transistor or biasing circuits |
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Faulty vacuum temperature switch or speed sensor |
"After performing above three remedies satisfactorily |
ground lead to speed sensor |
then run engine up to 1500 rpm. If RCT light does not turn on |
replace vacuum switch. If light turns on |
replace sensor switch." |
|
|
| "With RCT light on |
RDY does not light |
but system operates" |
Poor circuit connections |
Remove any corrosion and tighten loose wiring connections and harness connector |
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|
|
Burned out RDY bulb |
Replace |
|
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| "RDY and RCT lamps indicate operation |
but system is not reducing tank contents" |
Pump not working |
Remove any terminal corrosion on outside connections and tighten loose ground wiring connections |
|
|
|
"Pump working |
but waste not being injected into exhaust pipe because of clogged screen in holding tank." |
"Remove holding tank evacuation probes and inspect for a clogged screen; flush screen as required |
then replace probe." |
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"If pump is working and screen cleaned |
hoses may be constricted or clogged." |
"Remove constriction |
unclog hose |
or replace hose as necessary" |
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|
Loose hose clamps and or evacuation probe |
Tighten loose clamps and or secure evacuation probe firmly into tank grommet (so system pumps waste only) |
|
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| RCT light remains on during engine deceleration |
Defective vacuum temperature switch |
Replace |
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| RDY and RCT light intermittently |
Poor ground wiring connections or battery negative connection |
Remove any terminal corrosion and tighten loose connections. |
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| RDY and RCT light at a constant rate |
Poor Battery terminal connections |
Clean and tighten battery terminals (especially negative post) |
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