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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3. 3.51
51 Ba
Batt tter ery Vo
Error code: 79
Error code: 79
Situat
Sit
uation
ion
Possible
Possible
cause
cause
Trigger of
Trigger of
the error
the error
code
code
Checks
Checks
(1) Disconnect battery plug
(1) Disconnect battery plug
Measure battery voltage with multimeter
Measure battery voltage with multimeter
36
36
(
(
2
2
)
)
T
T
u
u
r
r
n
n
(4)
(4)
Set #46 of Setup Option Group
Set #46 of Setup Option Group
(5) Turn off power and turn on power again
(5) Turn off power and turn on power again
(6) Disconnect battery plug, then perform inverter
(6) Disconnect battery plug, then perform inverter
discharging work
discharging work
(7) Per
(7)
Perform inverter discharging
form inverter discharging
card of logic unit
card of logic unit
y Volt ltag
age To
e Too Hi
o High (
gh (79
Displa
Dis
play: "7
y: "79".
9". All
All tru
truck o
ck oper
perati
Faulty or highly charged battery, high voltage battery, improper battery voltage setting (Setup Option #41),
Faulty or highly charged battery, high voltage battery, improper battery voltage setting (Setup Option #41),
improper battery voltage adjustmen
improper battery voltage adjustment setting (Setup Option #46), faulty
Corrected battery voltage is too
Corrected batter
y voltage is too high. Battery voltage is corrected by #46
36 36 V V battery:
battery: more
more than
than 42 42 V V
V
V
battery
batte
ry
:
:
34
34
to
to
42
42
V,
V,
48
48
V
V
battery
batte
o
o
n
n
p
p
o
o
w e
w
er
r
i n
i n
S
S e
et u
t
up
p
O
O
p
p
t
t i
io
o
n
n
G
G
r
r
o
o
u
u
3
3
If fault remains
If fault remains
work
work
, then replace logic
, then replace logic
79) )
ations
ons inh
inhibi
ibited
ted. . Lin
Line co
e conta
ntacto
ctor OP
t setting (Setup Option #46), faulty logic unit.
high. Battery voltage is corrected by #46 value.
48 48 V V battery:
battery: more
more than
ry
:
:
45
45
to
to
60
60
V
V
p
p
3
3
s e
s
et t
t
ti
i
n
n
g
g
(
(
3
3
)
)
R
R e
r OPEN a
EN and p
nd pump
ump con
contac
tactor
tor OPE
OPEN. N.
logic unit.
value.
than 60 60 V V
Abnormal
Abnormal
ep
p
l
l
a
a
c e
c e
w
w i
it h
t h
p
p
r
r
o
o
p
p
e
e
r
r
b
b
a
a
t
t t
te
e
r
r
y
y
501154
501154
2-115
2-115
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