Hayward TRX-20 Guide D'utilisation page 11

PROBLEM
The TRX-20 does not move.
The TRX-20 moves too slow.
(see also "does not move" above)
The right wheel will not turn when
rotated by hand.
(looking from behind)
The right wheel skips teeth when rotated
forward by hand. (looking from behind)
The loops in the hoses won't come out.
The TRX-20 turns in circles, it
wont go straight at all.
The TRX-20 does not clean the
entire pool.
The TRX-20 climbs the wall too
much or climbs out.
The TRX-20 won't climb the wall.
(see also "moves too slow" above)
When the pump turns off the hoses pop
out of the skimmer or suction inlet.
(another symptom of air is a cleaner floating )
Wheels are wobbly.
The TRX-20 falls on its side
and takes too long to recover.
Turbine vanes /blades pop out of
turbine.
ALWAYS TURN OFF THE SYSTEM BEFORE PERFORMING ANY REPAIRS.
SOLUTION
Check wheel RPM.
Obstruction in the TRX-20 itself. If there was an
obstruction make sure vanes are replaced correctly
The pump may be turned off or on low speed.
The pump may not be primed. Check for leaks in the
system (symptoms--bubbles from the returns ?) Possible other
problem or obstruction in the system. Pump impeller blocked?
Filter needs backwashing. Clean pump basket, skimmers.
Turbine vanes/blades in wrong direction and/or wrong side.
Problem or obstruction in the system.
Obstruction in the TRX-20 itself.
Low wheel RPM (insufficient flow).
Obstruction in the TRX-20 itself.
Wheel hub or right drive gear worn/damaged.
The hoses have been stored in a coiled position. Lay them
straight in the sunlight.
Clean swivel on cleaner head by running it under a tap.
If using a leafcanister it may be in wrong place or not floating.
Wheel hub and/or large drive gear and/or steering slide
assembly and/or right drive gear are worn or damaged.
The hose is too short.
The float(s) may be in the wrong position. Should be 22-24"
from cleaner head.
The Hose Cone Swivel (on the turbine cover) may be dirty.
The return fittings may be pushing the TRX-20
hoses away. Point them down.
The tire treads and skirts may be worn down.
Too much suction or flow.
You are not using the Bypass Valve (if hook up is in skimmer).
Auto skim plate/vac plate needs adjustment.
Too little suction or flow.
Float may be in the wrong position.
Make sure hose cone is properly placed into inlet/port/watergate.
Air in system. When pump shuts off air goes path of least
resistance and pops out the hose. Fix air leak.
Bearings are worn please replace.
The float(s) may be in the wrong position or missing.
The hose is too short.
The return fittings may be pushing the TRX-20 hoses away.
Check wheel RPM.
Wrong side of vane in the turbine hub. Large eliptical side
should be in turbine.
Turbine hub possibly worn.