SECTION 3 - TROUBLESHOOTING AND FAULT CODES
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7.
Connect the power cable, the light on the bat-
tery charger flashes red/green after two minutes.
This condition indicates the battery charger
does not find the 72V battery package. Check
fuse F1, then check fuse F3, then check the gray/
red wire connected from the pin no. 5 of the “6
ways BC connector” to the pin no. 2 of the “5
ways BMS connector of the BMS. Check the con-
nection from the “5 ways BMS connector” of the
BMS.
If all the connections and supply are ok, go to
step 8, if not go to step 9.
8.
All the connections and the supply are ok.
Remove the four screws and the cover of the
BMS.
Check if the red LED are ON (yellow circle), and
check if the CAN BUS green LED are ON (yellow
square).
If all the connections are ok but there is no sup-
ply to LED on the BMS, replace the BMS. If the
supply connections and LED are ok, but the CAN
BUS LED are OFF, check the CAN BUS connec-
tions.
9.
Battery charger works correctly, but the battery
level indicated on the display remains “zero”.
If wrench icon appears on the display as shown
below, go to step 10, if not go to step 17.
10.
Wrench icon appears on the display.
Check the trouble codes, push button no. 6 (ser-
vice), and then no. 3 (errors), then no. 1 (previ-
ous).
If trouble code “80” is shown on the inverter, go
to step 11, if not go to step 14.
11.
Inverter trouble code is number “80”.
Check fuse F160, then check if fuse F160 has 72
Volt to the ground.
If fuse F160 shows 72 Volt, go to step 12, if not go
to step 13.
12.
Fuse 160A has 72 Volt.
Check the Inverter connections.
13.
Fuse 160A does not show 72 Volt.
If Fuse 160A does not receive supply, BMS can be
OFF, so the internal contactor is also OFF, go to
step 7. If everything is ok check the internal con-
tactor.
14.
Inverter trouble code is not number “80”.
If the inverter trouble code is number “74”, go to
step 15. If not go to step 16.
15.
Inverter trouble code is number “74”.
Check the connections from the inverter to the
“MR” and check the “MR” coil.
16.
See explanation on Service Manual table list.
MAF12130
MAF12090
MAF12000
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