Mitsubishi Electric 9900B Series Owner Technical Manual page 71

MITSUBISHI
ELECTRIC
(Note 3) Code indication means:
UA+++ ------------------------ Alarm
UF+++ ------------------------ Failure
U%0++ ----------------------- Rectifier circuit failure
U%1++ ----------------------- DC circuit failure
U%2++ ----------------------- Inverter circuit failure
U%3++ ----------------------- Control circuit failure
U%4++ ----------------------- Bypass system failure
U%8++ ----------------------- Alarm
U%+00 - U%+49 --------- Major failure
U%+50 - U%+99 --------- Minor failure
*) "+" denotes any numeral from 0 to 9
*) "%" denotes either "A" or "F"
9900B SERIES UPS
OWNERS / TECHNICAL MANUAL
MITSUBISHI ELECTRIC 9900B SERIES UPS
Page Number:
6-8