No_PU = No power unit. 24Vdc is being supplied to the control card with no AC voltage (230 or 400) being supplied to L1/L2/L3.
Verify AC voltage is present at L1/L2/L3. *If not present, apply voltage and no_PU should clear. *If present and unit still no_PU, there is a problem with the power stage. At that point unit should be replaced or repaired.
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No_PU = No power unit. 24Vdc is being supplied to the control card with no AC voltage (230 or 400) being supplied to L1/L2/L3.
Verify AC voltage is present at L1/L2/L3.
*If not present, apply voltage and no_PU should clear. *If present and unit still no_PU, there is a problem with the power stage. At that point unit should be replaced or repaired.