Error Message: “One phase missing”

Reason for error message:

• The Pacemaker™ HF has detected a missing phase.

Possible causes:

• Supply voltage mains (all three phases) 400V
• Check the small fuses on the bottom of Pacemaker HF
• Check complete wiring, Are all clamps tightened?
• Measuring voltage at the input terminals on the main board (see attached picture)
• IC “OC14” or phase measurement is defective. Replace the IC, Type HCPL3700