Delta Modulon DPH 200kVA, User Manual, Page: 217 / 232

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10
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Troubleshooting
No.
Alarm
Message
Possible Cause Solution
6
Bypass Input
Volt Phase
Seq Abnormal
The wiring is incorrect.
Please check the wiring and phase sequence
of the bypass AC source, and contact service
personnel for assistance.
7
Bypass Volt
Out ECO
Range
The bypass AC source’s
voltage or frequency
exceeds the range for ECO
mode.
Please check the bypass AC source’s voltage
or frequency. If it is abnormal, please wait for
the bypass AC source to be restored.
8
Bypass
Breaker Off
For single input application,
the input breaker or switch
is turned off.
1. Please check if the input breaker or switch
is turned off or not. If yes, please turn it on.
2. If the alarm message still exists after
the solution mentioned above has been
executed, please contact service personnel.
For dual input application,
the bypass breaker or
switch is turned off.
1. Please check if the bypass breaker or
switch is turned off or not. If yes, please turn
it on.
2. If the alarm message still exists after
the solution mentioned above has been
executed, please contact service personnel.
9
Bypass STS
Over Heat
Warning
Heat dissipation is poor or
components are damaged.
1. Check if any foreign matter blocks the fans
or air inlet. If yes, remove the foreign matter.
2. Decrease some loads.
3. If the alarm message still exists after the
solutions mentioned above have been
executed, please contact service personnel.
10
Bypass STS
Fault
The bypass static switch
or its driving circuit is
abnormal.
Please contact service personnel for
assistance.
11
Battery End
of Discharge
Imminent
The battery voltage is lower
than the alarm value.
If there is no bypass power feeding to the
system, please shut down the connected loads
in accordance with normal procedures as soon
as possible.
12
Battery End
Of Discharge
The battery voltage is lower
than the End-of-Discharge
setup value.
If there is no bypass power feeding to the
system, please shut down the connected loads
in accordance with normal procedures as soon
as possible.
13
Battery Over
Charged
The charger is abnormal.
Please contact service personnel for
assistance.