Ryobi RY48ZTR75 Service Manual page 54

BEEP # DESCRIPTION
Angle sensor not at
Turn key off, return both levers to open, turn key on
1
neutral
Return both levers to open and try operate again
2 Over current
Motor stall
Return both levers to open and try operate again
3
Use hand to push down the center of the seat and try
Seat switch open
4
Fuel gauge if battery was charged above 5%, if not,
5 Under voltage
Over temperature Return both levers to open and try operate again
7
Hall sensor fault Return both levers to open and try operate again
8
Check com connectors, unplug and plug in again and
10 Com port
Check com connectors, unplug and plug in again and
11 Com port
Check charger connector, unplug and plug in again and
13 Self test
Angle sensor failure Return both levers to open and try operate again
17
Return both levers to open and try operate again
19 AD error
Turn key off, return both levers to open, turn key on
20 CPU error
ZTR BEEP DIAGNOSTIC CODES
CHECK:
again
charge the unit
tug on the wire to see if any wire is loose
tug on the wire to see if any wire is loose
tug on the wires to see if any wire is loose
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IF NOT SOLVED...
Replace charger board
Replace both drive controllers
Turn key off, push unit by hand and check if it can be
easily pushed, if hard to push, chech which side is
hard to push.
Check seat switch connection and wiring integrity
Wait 30 minute and try again
Check hall sensor connectors and unplug and plug in
again
Replace drive controllers
Turn key off, and turn key back on
Turn key off, push unit by hand and check if it can be
easily pushed, if hard to push, replace drive
controllers
Check angle sensor connections
Replace control lever assembly
Replace drive controllers
IF NOT SOLVED...
Check angle sensor connections
Lift up the unit to allow rear wheels to spin freely.
Check each wheel spining and replace the
motor/tranmission assembly on the side that is
binding
Disconnect seat switch and short circuit the male
terminal(mower side), if resolved, replace seat
switch
Replace drive controllers
Replace drive motor/gearbox assembly for
the affected side
Replace drive controllers
Replace control lever assembly
IF NOT SOLVED...
Replace control lever
assembly