Question about Bissell 7920 ProHeat Pro-Tech Upright Wet/Dry Vacuum
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Posted on Jan 02, 2017
Thanks to many others who have posted on similar problems -- water
and/or solution sprays through the handheld tools, but not through the
As others have suggested, I removed the water reservoir, which exposes the 2 main water sprays mounted above the rollers. Using, pliers, I carefully slid the clips back. Gently but firmly removed the two red nozzles.
Elsewhere I have read suggestions to just do one nozzle at a time. However, I found out that if you remove both red nozzles, you can then blow through one side and it will come out the other. In my case, that dislodged a nice collection of crystal-like chunks (guessing it may be crystallized residue from the cleaning solution).
There was also a bit of blockage in one of the red nozzles, which I cleaned out. Make sure you can blow through both of them with little resistance.
Reassemble: Push red nozzles back into hoses. Using pliers, reposition sprung clip back over the red nozzle. Snap nozzles back into place. Refill tanks and power it up.
In my case, that resolved the problem of no sprays from the main machine. Sprays like new now. Hope yours does too!! g
Posted on Sep 26, 2009
If I may! In most cases the heater is clogged. It might be clogged with soap that has harden over time. You need to take the handle apart. You will see a metal box(thats the heater) besides the wires there are two tubes connected to the heater. remove the tubes but label or watch which tube goes where. now turn the heater upside down. there are 6 screws on the side and 1 in the middle. remove them carefully. the 6 on the side have a small gaskets under them..you don't want to lose them. the 1 in the middle has no gasket, now the bottom plate of the heater can be taken off (there is a gasket with that plate ...be careful . you will now see the long channels inside the heater and need to clean it. the holes where the tubes where connected have to be clean also but carefully. the metal is soft.so it bends. now put it all back. hope this helps. if you want to keep this from happening.the best way is to run clear water after you are done.this will remove any soap in the machine which will harden after the machine drys out. hope I helped .
and to mr. reddevil6 I am learning lots from you. Thanks
Posted on Feb 13, 2008
Problem could be a stopped up heater unit which is located in the handle. The two clear hoses going up the inside of the left wheel go to the heater. There is also an in-line water switch located directly above the heater. The trigger for water release is in the top part of the handle. back to the heater... mine was corroded inside. Removed 5 screws holding heater cover. clean water trough and reassemble. If you need new washers go to Ace hardware. The smallest size metric rubber washers seem to work fine. take old rubber washers(red?) with you for comparison.
Posted on Mar 03, 2008
Under the plastic under the water tank (its a pain to pull apart to get to it) there is a solenoid that actuates the water between the floor and the tools. This is toast if its not spraying the floor, its simply not reacting to the signal to let it go through to the water side.
Seems to be a common problem with the Bissell Proheats. You can order a new one online for about $12 and try to get to it to replace it yourself (if you can open up the base its obvious which part it is if you just follow the hoses).
Posted on Oct 31, 2009
Check to ensure there is liquid in the water tank and the formula bottle.
Note: This machine will spray with liquid in the Water tank only if the machine is set to the Water Rinse setting. On any other setting, you need to have liquid in the formula tank as well.
If no: add liquid to the Water tank and the Formula tank.
If yes: check each of the following....
- Check the bottom of the Water Tank and the Formula Tank to make sure each has a red auto-load gasket attached. Make sure the Water Tank and the Formula Tank are seated properly.
- Ensure the tank lid is properly attached to the bottom of the tank. To attach this properly, remove the Water Tank from the machine. Hook the front window onto the lip of the bottom container and then allow the window with lid to cover the complete tank. Secure the latch on the back of the bottom tank to the back of the tank lid. THE TANK LID CANNOT BE ATTACHED PROPERLY IF THE BOTTOM TANK IS ALREADY INSTALLED IN THE MACHINE.
-If everything is seated and attached properly, prime the machine by turning off the power, waiting one minute, and then turning the power back on and depressing the trigger on the handle.
- If priming the unit fails to fix the problem, remove the handle completely and re-attach. Once the handle is re-attached, re-attempt to spray.
If the machine continues to not spray, check the following:
REMOVE THE COLLECTION TANK:
• Make sure the unit is set to water rinse
• Remove the smart mix bottle and fill it with water only
• Place the smart mix bottle into the collection tank reservoir
• Run the unit and try to spray. If the machine sprays, you will be able to see the water level decreasing in the smart mix bottle and you will need to replace the bottom tank. It is possibly warped.
Posted on Jun 15, 2010
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