
www.irobot.com 19
Problem  Possible Cause what to Do
Verro will 
not start a 
cleaning cycle
The Power Supply is not 
plugged in
The floating power cord 
is not plugged into the 
Power Supply
Plug the Power Supply into a GFCI outlet.  Keep the Power 
Supply at least 12 feet from the pool. 
Plug the floating power cord into the Power Supply.  
When the plug is fully seated, turn the locking collar 
clockwise to lock it.  (p. 9)
Verro is not 
cleaning 
properly
The filter bag needs to be 
cleaned
The pump impeller is 
fouled
Clean the filter bag. (p. 12)
Clean the impeller. (p. 18)
Verro does 
not climb the 
walls of the 
pool
The filter bag needs to be 
cleaned
The brushes,drive 
belts or drive tracks 
need replacing
The pump impeller is 
fouled
Clean the filter bag. (p. 12)
Replace brushes, drive belts or drive tracks. (p. 16)
Clean the impeller. (p. 18)
The floating 
power cord 
is tangled or 
kinked
The floating power cord 
has become twisted
Use Detangler to untwist the cord. (p. 17)
Remember to reverse the direction of the handle 
before each cleaning cycle.
Many problems with Verro are caused by a dirty or clogged filter bag.  Verro 
depends on water flowing freely through the filter bag to operate at peak 
efficiency.  If the filter bag gets clogged, Verro will not move as well and will 
not be able to clean as effectively.  The fine filter bag can trap particles as 
small as two microns across and can be clogged by particles too small to 
see.  If rinsing the filter bag by hand with a hose does not solve the problem, 
try machine washing it in cold water.  Do not use any detergent, fabric 
softeners, bleach, or any other additives.  Do not machine dry the filter bag.
If you find the filter bag gets clogged too quickly, consider using the mesh bag 
instead (mesh filter bags are available separately from www.irobot.com).
Always turn off Verro’s Power Supply and unplug it before troubleshooting 
any problem.