Mitsubishi FB13PNT, Quick Start Manual, Page: 202 / 292

2-115 2-115
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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 y Volt ltag age To e Too Hi o High ( gh (79 79))
Error code: 79 Error code: 79
Sit Situat uation ion Dis Displa play: "7 y: "79". 9". All All tru truck o ck oper perati ations ons inh inhibi ibited ted. . Lin Line co e conta ntacto ctor OP r OPEN a EN and p nd pump ump con contac tactor tor OPE OPEN. N.
Possible Possible
cause cause
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 t setting (Setup Option #46), faulty logic unit. logic unit.
Trigger of Trigger of
the error the error
code
code
Corrected batter Corrected battery voltage is too y voltage is too high. Battery voltage is corrected by #46 high. Battery voltage is corrected by #46 value. value.
36 36 V V battery: battery: more more than than 42 42 V V 48 48 V V battery: battery: more more than than 60 60 V V
Checks Checks
(1) Disconnect battery plug (1) Disconnect battery plug
Measure battery voltage with multimeter Measure battery voltage with multimeter
36 36 V V batte batte ry ry : : 34 34 to to 42 42 V, V, 48 48 V V batte batte ry ry : : 45 45 to to 60 60 V V Abnormal Abnormal
( ( 2 2 ) ) T T u u r r n n o o n n p p o o w e w e r r i n i n S e S e t u t u p p O O p p t i t i o o n n G G r r o o u u p p 3 3 s e s e t t t t i i n n g g ( ( 3 3 ) ) R e R e p p l l a a c e c e w i w i t h t h p p r r o o p p e e r r b b a a t t t t e e r r y y
(4) (4) Set #46 of Setup Option Group Set #46 of Setup Option Group 3 3
(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) Per form inverter discharging form inverter discharging work work , then replace logic , then replace logic
card of logic unit card of logic unit
If fault remains If fault remains