SECTION 3 - TROUBLESHOOTING AND FAULT CODES
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6.
Connect the power cable, the battery charger
light is red after two minutes.
The system works correctly. Keep the power
cable connected until the light on the battery
charger will flash yellow. Test the machine again,
if the problem remains, go to step 9.
7.
Connect the power cable, the battery charger
light flashes red/green after two minutes.
This condition indicates the battery charger
does not find the 48V 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 supplies are ok, go to
step 8, if not go to step 9.
8.
All the connections and the supply are ok.
Check Relay no. 3 (or 2, depending on the serial
number of machine) and its connection, open
the BMS cover and check if the feed to red LED
are ON (yellow circle) and check if the Can Bus
green LED are ON (yellow square) as shown
below.
If all the connections are ok but there is no sup-
ply to LED on the BMS, replace the BMS.
If the supply to the connections and LED are ok,
but the CAN BUS LED are OFF, check the CAN
BUS connections.
9.
Battery charger works ok, 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 is shown 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 F4, then check the electric line of the
fuse F4. If the fuse F4 and its line are ok, check
fuse F160, then check if fuse F160 48 Volt to the
ground.
If fuse F160 shows 48 Volt, go to step 12, if not go
to step 13.
12.
Fuse 160 A has 48 Volt.
Check the Inverter connections.
13.
Fuse 160A does not show 48 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.
MAF12090
MAF12000
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