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UM1R483500E User Instructions

Issue AG, November 20, 2012 Spec. No. 1R483200 (Model R48-3200)

Spec. No. 1R483200E (Model R48-3200E)

Spec. No. 1R483500E (Model R48-3500E)

Page 20

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Symptom

Possible Cause(s)

Suggested Action(s)

Power

Indicator

(Green) Off

No input voltage.

Make sure there is input voltage.

Internal input fuse open.

Replace the Rectifier.

Protection

Indicator

(Yellow) On

AC input voltage outside the

normal range.

Correct the AC input voltage to

within the acceptable range.

PFC over-voltage.

Replace the Rectifier.

Moderate load sharing imbalance.

Replace the Rectifier.

Rectifier not inserted into the slot

completely.

Remove and properly insert the

Rectifier.

Rectifier over-temperature protection, which could be caused by:

1. Fan rotor blocked.

1. Remove any object that may

be blocking the fan.

2. Ventilation blocked (inlet or

outlet).

2. Remove any object that may

be blocking the inlet or outlet.

3. Ambient temperature too high

or Rectifier inlet too close to a

heat source.

3. Lower the ambient temperature

or relocate the heat source.

Protection

Indicator

(Yellow)

Flashing

Rectifier communication failure.

Check the communication cables.

Remove and properly insert the

Rectifier.

Alarm

Indicator

(Red) On

Output over-voltage shutdown.

Severe load sharing imbalance.

Internal output fuse open.

Remove the Rectifier, wait 30

seconds or more (until the LEDs

on the rectifier extinguish), then

re-insert the Rectifier. If Rectifier

fails to start or shuts down again;

replace the Rectifier.

Alarm

Indicator

(Red)

Flashing

Fan not operating

(Rectifier shuts down).

Replace the fan.

Table 3

Rectifier Troubleshooting

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 28

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