SYMPTOM | CHECK | ACTION | REF |
Output is present | Is the power supply | Check if the positive or | 3.9.6 |
momentarily but shuts off | configured to Remote | negative load wire is loose. | 3.9.8 |
quickly.The display indicates | sense? |
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“OUP”. |
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Output Voltage will not | Is the unit in constant | Check Output Current | 5.2.1 |
adjust. Front panel CC LED | current mode? | setting and load current. | 5.2.2 |
is On. |
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|
Output Voltage will not | Check if output voltage is | Set OVP or UVL so they will | 5.3 |
adjust Front panel CV Led is | adjusted above OVP | not limit the output. | 5.4 |
On. | setting or below UVL |
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| setting. |
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|
Output Current will not | Is the unit in constant | Check Output Current and | 5.2 |
adjust. Front panel CV LED | voltage mode? | voltage setting |
|
is on. |
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|
Large ripple present in | Is the power supply in | Check load and sense wires | 3.9.4 |
output. | remote sense? | connection for noise and | 3.9.8 |
| Is the voltage drop on the | impedance effects. Minimize |
|
| load wire high? | the drop on the load wires. |
|
No output. Display indicates | Overvoltage Protection | Turn off the AC power | 5.3 |
“OUP” | circuit is tripped. | switch. Check load |
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| connections. If Analog |
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|
| Programming is used, check |
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| if the OVP is set lower than |
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| the output. |
|
No output. Front panel | Display indicates “ENA” | Check rear panel J1 | 5.8 |
ALARM LED is blinking. |
| ENABLE connection. |
|
|
| Setup switch SW1 setting. | 4.4 |
| Display indicates “SO” | Check rear panel J1 Output | 5.7 |
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| |
| Display indicates “OTP” | Check if air intake or |
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|
| exhaust are blocked. Check |
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| if the unit is installed |
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| adjacent to heat generating |
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| equipment. |
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| Display indicates “Fb” | Check Foldback setting and | 5.5 |
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| load current. |
|
Poor Load regulation. | Are sensing wires | Connect the sense wires | 3.9.8 |
Front panel CV LED is on. | connected properly? | according to User’s Manual |
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|
| instructions. |
|
The front panel controls are | Is the power supply in | Turn Off the AC power and | 7.2.5 |
wait until the display turns |
| ||
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| off. Turn on the AC power |
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| and press front panel |
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| REM/LOC button. |
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73
