Samsung AM072BXV Series - Outdoor Fan PBA Overvoltage; Low Voltage Error

Troubleshooting
Samsung Electronics 141
4-3-51 Outdoor Fan PBA Overvoltage / Low voltage error
Outdoor unit display
Judgment Method
• DC-Link Overvoltage / Low voltage occurs.
Cause of problem
• Check the status of DC LINK Connector
1.
Cause of problem
• Be careful when you check DC voltage.(600Vdc ↑ )
How to check voltage from DC LINK connector disconnect from FAN PBA.
→ ⓐ Turn off the MAIN Power
→ ⓑ Disconnect the DC LINK connector from FAN PBA
→ ⓒ Turn on the MAIN Power
→ ⓓ Check voltage of connector
AC Input Voltage
Standard
AC Voltage(Vac)
Standard
DC Voltage(Vdc)
Min. Max. Min. Max.
208~230V 187 253 265 358
460V 414 506 585 715
380~415V 342 457 484 646
Standard voltage range of DC and AC
4-3 Appropriate Measures for Different Symptom (cont.)