Question about Bissell 7920 ProHeat Pro-Tech Upright Wet/Dry Vacuum
My Bissell ProHeat Carpet Steam Cleaner (Model 7920) worked great for 6 months. After that, it would occasionally not spray solution/water when I pressed the trigger for spray when cleaning. I would take the water canister out, check the bladder & gasket & connections where the container met up with the base of the machine to make sure there was a connection. Then, it would spray again for a while. Now, I cannot get it to spray at all. The vacuum/suction function works, just not the trigger/spray.
The problem was a clogged heating unit which is located in the lower handle. There are two clear hoses going up the inside of the left leg of the lower handle that go to the heater and to the in-line water switch all within the lower handle. I unplugged the metal heating unit water lines and electrical connections (label the connections as you take them apart if you have a hard time remembering things...there were seven connection in all be it water and/or electrical). Removed the heat unit out and then removed the 6 screws holding the heater cover. Inside was a white powdery pasty debris (lime deposit ?) and the water path was clearly blocked in four different places. I cleansed the water trough with a little water and soft toothbrush and several toothpicks then reassembled. If you need new washers go to Orchard or ACE hardware. Take the old rubber washers(they are red) with you for comparison. I didn't need new washers...I just gently cleansed them. I immediately ran clear water through the machine and actually cleaned the carpet with a water rinse only. Will go back and finish the carpet the right way tomorrow. I had only used my machine three times before this happend over a three year period. A friend told me to always rinse it two maybe three times with clear water after using it and before storage. This took me exactly 42 minutes to disassembly and reassemble. Cost savings is several hundred dollars since I have a 5 bdrm house and would need a professional cleaner to do the small dirty traffic lanes all around the house.
Posted on Sep 19, 2009
The inlet or outlet of the heater could be blocked with lime scale if its an older model.
are the spray tips clogged, turn the machine over, these are uder the brush ,
the filter could be block under the flow indicator,
take of the clear cap wich the spinner is located in there is a white filter under this ,see if its clean.
Posted on Nov 22, 2007
Mine would not spray at all after one use...took it in to repair shop and was told to always run clean water through machine after shampooing because the soap thickens and clogs, in my case, the heater.
Posted on Sep 08, 2009
Check out Chocolate69, solution#3. It is right on the money, and very easy to do. It seems most, if not all spraying problems relate to the heating unit getting clogged. When you open yours up to clean it you'll see what I mean. And once again, it's an easy job. I didn't feel it necessary to disconnect any electrical just the two water hoses for cleaning. Good Luck To All!
Posted on Oct 04, 2009
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
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