DANFOSS-error codes
Below you will find a list of common error messages from various brands. Not all error messages are listed here. It is advisable to also consult the manual of the device.| Brand | Error code | Cause | Action |
|---|---|---|---|
| Danfoss | U 3.3 | Internal power supply outside limits | Contact inverter service |
| Danfoss | U 5.0 | Internal power supply outside limits | Contact inverter service |
| Danfoss | U 15.0 | Internal power supply outside limits | Contact inverter service |
| Danfoss | U PV | Input voltage from PV string too high | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Danfoss | U-SNUBBER | Snubber voltage too high | If problem occurs once only: wait for the regulator to be come stable again. If problem occurs repeatedly: please Contact inverter service |
| Danfoss | U DC-BUS | DC bus voltage too high | If problem occurs once only: wait for the regulator to be come stable again. If problem occurs repeatedly: please Contact inverter service |
| Danfoss | U-GRID | AC grid voltage outside the threshold values (higher or lower than setting) | If problem occurs once only: wait for the regulator to be come stable again. If problem occurs repeatedly: please Contact inverter service |
| Danfoss | F-GRID | Grid frequency outside limits (outside settings) | If problem occurs once only: wait for the regulator to be come stable again. If problem occurs repeatedly: please Contact inverter service |
| Danfoss | IPM CURRENT | The DC content in the AC current is too high. | Please Contact inverter service |
| Danfoss | ENS | ENS error | If problem occurs repeatedly, Contact inverter service |
| Danfoss | ENS RAM | ENS memory error | Please Contact inverter service |
| Danfoss | ENS FL. CHKSM | Flash memory error after self-test | Please Contact inverter service |
| Danfoss | ENS EP. CHKSM | EPROM memory error after self-test | Please Contact inverter service |
| Danfoss | HW TRIP | Hardware trip – current too high | Please Contact inverter service |
| Danfoss | TEMP HIGH | Temperature in integrated power module too high | Check the inverter for heat build up or blockage of the cooler ribs and rectify as required. If this does not correct the problem, Contact inverter service |
| Danfoss | EPRM PAR. LIM | Validity check of grid voltage and frequency settings. Settings too far away from actual grid voltage and frequency values. | If constant, Contact inverter service |
| Danfoss | ENS COM ERR | Error in communication with ENS board | If constant, Contact inverter service |
| Danfoss | ENS impedance | Grid impedance step higher than limit | If problem occurs repeatedly, Contact inverter service |
| Danfoss | PV—CONFIG—ERR | Error detected by PV configuration test | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Danfoss | EARTHFAULT | Current event shown in grid mode | Check system isolation. If you consider the isolation impedance to be in order, Contact inverter service |
| Danfoss | okt/15 | Grid voltage to high | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Danfoss | 103-105 | PV current to high/waiting | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Danfoss | 115 | PV instulation resistance is too low /retrying | Check system isolation. If you consider the isolation impedance to be in order, Contact inverter service |
| Danfoss | 1/jun | Grid voltage to low | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Danfoss | 16-18 | Momentary grid voltage is too high | As long as the inverter is detecting a grid line to line over voltage: check the line to line voltages (with a true RMS measurement device). As long as you consider line to line voltages to be in order, Contact inverter service |
| Danfoss | 19-24 | Grid frequency out of range | Arrange for an electrician to check the grid instantaneous voltage and grid frequency. If you consider them to be in order, Contact inverter service |
| Danfoss | 201-208 | Temperature to high | Check the inverter for heat build up or blockage of the cooler ribs and rectify as required. If this does not correct the problem, Contact inverter service |
| Danfoss | 209-210 | Intermediate voltage inside the inverter are too high | Contact inverter service |
| Danfoss | 211 | no tacho signal from fan | Visual check: cooling circuit air supply. If the blockage cannot be rectified, Contact inverter service |
| Danfoss | 212 | intermediate voltage inside the inverter are out of balance | Please Contact inverter service |
| Danfoss | 213-215 | plausibility error between internal measurements | Please Contact inverter service |
| Danfoss | 216-218 | grid current to high | Arrange for an electrician to check the grid instantaneous voltage and grid frequency. If you consider them to be in order, Contact inverter service |
| Danfoss | 222 | autotest conducted (only italy) | Arrange for an electrician to check the grid instantaneous voltage and grid frequency. If you consider them to be in order, Contact inverter service |
| Danfoss | 223,255-257 | islanding protection trip | Arrange for an electrician to check the grid instantaneous voltage and grid frequency. If you consider them to be in order, Contact inverter service |
| Danfoss | 224 | a wire is broken in the rcmu | If constant, Contact inverter service |
| Danfoss | 225-240 | internal memory error | If constant, Contact inverter service |
| Danfoss | 241,242,249 | internal communication error | If constant, Contact inverter service |
| Danfoss | 243,244 | internal error | If constant, Contact inverter service |
| Danfoss | 246 | Grid event detected, inverter stopped | Arrange for an electrician to check the grid instantaneous voltage and grid frequency. If you consider them to be in order, Contact inverter service |
| Danfoss | 247 | plausibility test in the functional safety processor has failed | If problem occurs repeatedly: please Contact inverter service |
| Danfoss | 251 | functional safety processor has reported fail safe | If problem occurs repeatedly: please Contact inverter service |
| Danfoss | 25-27 | Loss of mains, line to line voltage too low | As long as the inverter is detecting a grid line to line over voltage: check the line to line voltages (with a true RMS measurement device). As long as you consider line to line voltages to be in order, Contact inverter service |
| Danfoss | 258 | PV-voltage to high/waiting | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Danfoss | 28-30 | Loss of mains, rocof out of range | Arrange for an electrician to check the grid instantaneous voltage and grid frequency. If you consider them to be in order, Contact inverter service |
| Danfoss | 31-33 | DC content of the grid current is too high | If problem occurs repeatedly: please Contact inverter service |
| Danfoss | 34-37 | Detected residual current is too high | If problem occurs repeatedly: please Contact inverter service |
| Danfoss | 350-352 | RCMU self-test failed | If problem occurs repeatedly: please Contact inverter service |
| Danfoss | 353-355 | Current sensor test failed | If constant, Contact inverter service |
| Danfoss | 356-363 | Transistro en relay test failed | If constant, Contact inverter service |
| Danfoss | 364 | Potential error in the ac installation | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Danfoss | 40 | AC grid is not ok | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
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