Ryobi RY48ZTR75 Service Manual page 50

CHARGER ERROR CODES
CODE
Charge Enable Fault: May indicate poor contact at the charger connector or the
One red flash
battery temp is too hot (Greater than 122 F
Battery Voltage Fault: May indicate installed battery or batteries are less than 36v or
Two red flash
more than 67.2v or they are too discharged or overcharged to be charged.
Battery Charge Timeout: Charge time exceeded may indicate a problem with the
Three red flash mower batteries or that the charger output current was reduced due to high ambient
temperatures.
Battery Fault: Charge time exceeded indicates a problem with battery voltage not
Four red flash
attaining the required nominal level within the maximum time allowed.
Temperature Delay: Charger had to turn off its output due to excessive internal
Five red flash
temperature.
Six red flash Charger Fault: Internal fault detected
MEANING
*Delta Q Charger Only
Confidential & Proprietary – Property of Techtronic Power Equipment – DO NOT COPY or DISCLOSE
SOLUTION
Check charger/ mower connection and remove any
debris. Allow hot batteries to cool, Then try charging
again.
Batteries must be charged by another means to bring
them to 36v or mower must be run to discharge
batteries to below 67.2v.
Disconnect charger. Allow batteries to cool, then try
charging again.
Disconnect charger. Check battery series
configuration to be sure batteries are properly
connected. Allow batteries to cool then try charging
again.
Make sure the charger cooling fins are clear of
obstruction and that the charger itself is not sitting in
direct sunlight. If charger is hot, allow to cool before
attempting to charge again.
Unplug charger, then plug back in and try charging
again.