Troubleshooting Low Suction Symptoms - Bissell ProHeat 2X 8920 Series Service Center Manual

TROUBLESHOOTING LOW/NO SPRAY SYMPTOMS (continued)
Check lines for evidence of pinching or restricted flow. Straighten, un-pinch, or replace
lines as necessary.
Set air duct back in place and re-attach both tubes to it.
Turn unit on.
Check the pump motor to make sure it is running.
If the pump motor is not running, check the current coming into it. If it is not receiving
approximately 12 volts DC the bridge rectifier may be faulty. Check for a loose
connection and replace the rectifier if necessary.
Check to see if the pump is primed. Water and solution should be pulled through the
SmartClean™ valve assembly and into the pump shortly after the unit is turned on.
Placing you hand over the air duct opening may help the pump to prime.
The pump is designed to "float" when properly mounted in the base. You should be able
to wiggle the pump even though the mounting screws are in all the way. If the pump is
being pulled to one side by a tube or wire it may not function properly. Wiggle the pump
from side to side to make sure it is free then check spray.
Check for bubbles in the flow system. Bubbles indicate an air leak coming in through a
component. If you see bubbles, you should replace the component that appears to be
leaking. Generally, the faulty component is the one that is upstream from the bubbles.
Begin to disconnect tubes from components to determine where the flow is stopping.
Start by disconnecting the tube from the "in" port on the heater. If solution is being
pumped out of that tube, replace it and then disconnect the tube from the heaters "out"
port and check for spray. Continue to replace and remove tubes checking components
until you have located the cause of the low spray.

TROUBLESHOOTING LOW SUCTION SYMPTOMS

Check all gaskets and seals and make sure tanks are seated down all the way.
Check for clogged filters on the recovery tank or a stuck float.
Check air path from bottom of base.
Issued: September, 2005
© 2005 BISSELL Homecare, Inc.
Bissell ProHeat 2X™ Service Center Guide
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