Must PV11-1200 PLUS, Service Manual

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Service Manual
PV1100 PLUS Series
(1200VA/1800VA/2400VA)
- 5 -
D. Main Board MOS Broken when Boosting (Figure 1.2)
Position Type Normal Value Failure Status
Main board Q1-Q7 MOS Boost reversely
between D-S 0.248
Short circuit or other
value
Note: If confirmed MOS broken, need to check if relative drive resistor is burned, broken
resistor value is larger than normal one.
E. Main Board Invert MOS Broken (Figure 1.3)
Position Type Normal Value Failure Status
Main board Q8-Q16 MOS Boost reversely
between D-S 0.515
Short circuit or other
value
Note: If confirmed MOS broken, need to check if relative drive resistor is burned, broken
resistor value is larger than normal one.
F. Cables Not to Connect Well
Position Type Normal Value Failure Status
Connection cable
between control board
and button board
Connection
cable
Connected well Disconnected
4.2 PV Failure in Charging
Possible Reasons as follows
A. PV Cables Connected Reversely or PV Volt Abnormal
Position Type Normal Value Failure Status
PV cable connection
terminal
Cable connection
terminal
Connected well &
PV volt between
15-30VDC
Poor connect, PV volt
is beyond normal
value
B. In AC Priority Mode
Position Type Normal Value Failure Status
Setting option No.6 Charger priority
setting
CSO/OSO Others