Hitachi uc 24yfb Technical Data And Service Manual page 20

(3) Trouble mode (C)
Pilot lamp remains green (red fails to light) after
battery has been connected.
Is ambient temperature
within designated range (between
0˚C and 40˚C) ?
battery very
Are the connection
terminals of the charger
or the battery dirty or
deformed ?
Is the resistance
between (S) and (---) terminals
2KΩ to 100 KΩ ?
Faulty internal circuits
Replace PCB.
YES
Is the
hot ?
NO
NO
YES
NO
Conduct charging within
designated temperature range.
0 ˚C
YES
Allow battery to cool prior to
charging
For EB 2420, charging cannot be accomplished
if battery temperature is above 60˚C.
For EB 2430HA, charging cannot be accomplished
if battery temperature is above 45˚C.
YES
Clean, or repair deformed
terminals.
NO
Replace battery.
17
---
40 ˚C