Troubleshooting - Calpeda NCE H Serie Instrucciones De Uso

12. Troubleshooting

If a failure occurs in the pump, the cause of the failure will appear in the display.
The error is identified by two digits, the first digit explains the alarm type, the second digit is reserved for the technical
assistance.
N° Displayed alarm
E1x Load errors
E10 (dry) Low motor load
E11 High motor load
E2x Protection active
E22 (hot) Converter temperature limit
E23 Converter temperature
protection
E24 Converter overcurrent
E25 Overvoltage
E26 Undervoltage
E27 PFC Overcurrent
E3x Pump errors
E31 Software motor protection
active.
E4x Device specific error codes
E40 General frequency converter
error
E42 (LEd) LED faulty
E43 (con) Communications failed
E44 DC link current offset
E45 Motor temperature outside limits
E46 Circuit temperature outside
limits
E47 Voltage reference outside limits.
E48 15V outside limits
E49 Test SW
E5x Motor error codes
E51 Motor parameters out of range
E52 Thermal protection active
E53 Invalid model selected
Pump is non-responsive
Pump doesn't work
NCE(D) H, NCE(D) HQ Rev. 5 - Operating Instructions
Causes
Low load detected. Pump is running dry.
Motor might be faulty or viscous medium is present.
Circuit is too hot and power was reduced to less than 2/3 of
rated power.
Circuit is too hot to run, pump stopped
Hardware overcurrent protection triggered.
Line voltage is too high
Line voltage is too low for proper operation.
Power correction circuit current cannot be controlled
Average motor current was too high, pump load is much higher
than expected
Electrical circuitry did not pass self‐test.
One of the display segment diodes is faulty (open/short)
Display board does not detect proper connection to main
board, but power supply is present
Voltage on DC link shunt (R34) not in expected range
During MFG. TEST, this is 10 kΩ, 1% resistor for 10 °C..30 °C
During operation, expected values are ‐55 °C..150 °C
During MFG. TEST, this is 0 °C..50 °C. During operation,
expected values are ‐55 °C..150 °C
Comparison between internal references does not match
15V power supply is not 15V.
Pump has to be reprogramed.
Motor does not behave as expected
Motor temperature is too hot to operate.
Pump model not valid or out of reach.
Turn power on and off.
Check electrical installation and fuse.
EN
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