2088

Abnormal DC protection unit

Major

1

The fuse is not in position or is blown.

2

The two relays on the breaking board are open-circuited.

3

The contact points of the DC switches are stuck.

4

The DC switch temperature is abnormal.

1, 2

Turn off the AC and DC switches, and contact your vendor or technical support to replace the faulty unit.

3

1. If the DC indicator on the panel is off, contact your vendor or technical support to replace the device.
2. If the DC indicator on the panel is on, turn off the AC and DC switches, and contact your vendor or technical support.
3. If the device appearance is abnormal, turn off the AC and DC switches, wait until the PV string current decreases to below 0.01 A, and remove the DC terminals.

4

1. If the DC indicator on the panel is off, turn off the AC and DC switches, wait until the PV string current decreases to below 0.01 A, remove the DC terminals, and contact your dealer or technical support.
2. If the DC indicator on the panel is on, turn off the AC and DC switches, wait for 15 minutes, turn on the AC and DC switches, and restart the device. If the fault persists, contact your vendor or technical support.