2-18
2-18
501136
501136
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.
3.6
6
Pu
Pump
mp In
Inve
vert
rter
er, O
, Ove
verh
rhea
eati
ting
ng (E
(E7)
7)
Error code: E7
Error code: E7
Situation
Situation
Controller/mo
Controller/motor overheat indicator ON. Lifting speed
tor overheat indicator ON. Lifting speed slower than normal. Normal
slower than normal. Normal traction motor and power
traction motor and power
steering operations. Service tool "Alarm status" and "E7" displayed.
steering operations. Service tool "Alarm status" and "E7" displayed.
Possible
Possible
cause
cause
Overheating of pump inverter, faulty pump inverter thermal sensor, open harness wiring, faulty pump inverter
Overheating of pump inverter, faulty pump inverter thermal sensor, open harness wiring, faulty pump inverter
PC board, abnormal power supply of
PC board, abnormal power supply of logic unit, faulty radiation of
logic unit, faulty radiation of pump inverter, faulty display unit.
pump inverter, faulty display unit.
Trigger of
Trigger of
the error
the error
code
code
Controller temperat
Controller temperature is out of
ure is out of range of -25 °C
range of -25 °C to 100 °C
to 100 °C (-13 °F to 21
(-13 °F to 212 °F). Capacitor temperature is out of
2 °F). Capacitor temperature is out of
range of -25 °C to 110 °C (-13
range of -25 °C to 110 °C (-13 °F to 230 °F). Recovers when temperatur
°F to 230 °F). Recovers when temperature is in range of -20 to 70
e is in range of -20 to 70 °C (-4 to 158 °F).
°C (-4 to 158 °F).
Checks
Checks
(1) Let truck cool for 15 minutes
(1) Let truck cool for 15 minutes
Overheat
Overheat
indi
indi
cator
cator
ON
ON
Overheat
Overheat
indi
indi
cator
cator
OFF
OFF
(2) Pump inverter becomes normal
(2) Pump inverter becomes normal
(3) Check if truck is operated to lift large cargo load
(3) Check if truck is operated to lift large cargo load
(4) Perform inverter discharging work
(4) Perform inverter discharging work
Check thermal paste applied on inverter mounting
Check thermal paste applied on inverter mounting
Surface
Surface
Thermal past
Thermal past
e fi
e fi
lm should
lm should
be th
be th
in and even
in and even
.
.
Normal
Abnormal
Normal
Abnormal
(7) Confirm temperature of controller and head
(7) Confirm temperature of controller and head
capac
capac
itor with
itor with
input monitor
input monitor
Less
Less
than
than
-20
-20
°C(-
°C(-
4
4
°F)
°F)
-20
-20
°C
°C
to
to
70
70
°C
°C
o
o
r m
r m
o
o
r
r
e
e
t
t
h
h
a
a
n
n
7
7
0
0
°
°
C
C
( 1
( 1
5
5
8
8
°
°
F
F
)
)
( -
( -
4
4
°
°
F t
F t
o
o
1
1
5
5
8
8
°
°
F
F
)
)
(10) Perform inverter discharging work
(10) Perform inverter discharging work
(8) Disconnect battery plug
(8) Disconnect battery plug
Wait until invertertemperature becomes close to room
Wait until invertertemperature becomes close to room
temperature
temperature
(5) Replace pump
(5) Replace pump
inverter
inverter
(6) Clean mounting
(6) Clean mounting
surface,
surface,
apply thermal paste,
apply thermal paste,
then
then
reinstall inverter
reinstall inverter
Without service tool
Without service tool
With service tool
With service tool
Normal
Normal
If problem reoccurs
If problem reoccurs
(9) Normal
(9) Normal
Содержание FB13PNT
Страница 2: ......
Страница 12: ......
Страница 86: ...1 73 1 73 Fig 5 Fig 5 500969 500969...
Страница 264: ...4 13 4 13...
Страница 265: ...CHAPTER 5 CIRCUIT DIAGRAM CHAPTER 5 CIRCUIT DIAGRAM Ch Chap apte ter 5 r 5 C CIR IRCU CUI IT DI T DIA AGR GRAM AM...
Страница 266: ...5 1 5 1...
Страница 267: ...5 2 5 2...
Страница 268: ...5 3 5 3...
Страница 269: ...5 4 5 4...
Страница 270: ...5 5 5 5...
Страница 271: ...5 6 5 6...
Страница 272: ...5 7 5 7...
Страница 273: ...5 8 5 8...
Страница 274: ...5 9 5 9...
Страница 275: ...5 10 5 10...
Страница 276: ...5 11 5 11...
Страница 277: ...5 12 5 12...
Страница 278: ...5 13 5 13...
Страница 279: ...5 14 5 14...
Страница 280: ...5 15 5 15...
Страница 281: ...5 16 5 16...
Страница 282: ...5 17 5 17...
Страница 283: ...5 18 5 18...
Страница 284: ...5 19 5 19...
Страница 285: ...5 20 5 20...
Страница 286: ...5 21 5 21...
Страница 287: ...5 22 5 22...
Страница 288: ...5 23 5 23...
Страница 289: ...5 24 5 24...
Страница 290: ...5 25 5 25...
Страница 292: ...9 9 9 9 7 7 5 5 9 9 5 5 M M 3 3 0 0 0 0 P P N N F F o o r r k k l l i i f f t t T T r r u u c c k k s s...