Hi, it's Allie from Crucial Vacuum!
Your Bissell ProHeat 25A3 may have stopped spraying water for several reasons. Make sure the bladder or water tank of your unit is filled with water properly and that the 2-in-1 tank has been placed properly.
If the water tank/bladder is filled and the 2-in-1 tank is placed properly, your unit's pump may have lost prime, to check this turn your unit's power off and hold spray trigger for 30 seconds. Turn the machine back on and check the spray flow.
Another thing that may not be allowing your unit to spray properly or spray at all is having a clogged solution filter and may need to be cleaned.
Last, your unit's pump belt may be broken. To replace, turn off your unit and unplug from any electrical outlet. Use a flat head screwdriver into the slot of the belt access door to release where you should have access to your unit's pump belt.
You can purchase direct your replacement belts from Crucial Vacuum with free shipping and an exclusive 10% coupon for Fixya.com readers, use code: FIXYA10
I hope this was helpful. If you would like further assistance, please feel free to give us a call at 877.750.9239. We have helpful and friendly customer care representatives on the line ready to assist you.
Alejandra (Allie) Sepulveda-Rivera
Crucial Vacuum Customer Care