Installation and operating manual58 016-059
7. Troubleshooting
Error Cause Remedial measures
Pump is not running
• No mains voltage available • Check mains voltage
• Fuse has tripped in mains fuse box • Replace fuse
• Connection cable damaged • Repair only by electrical specialist / service partner
• Float switch defective • Contact Customer Services
• Overheating
• Submersible pump starts up again automatically after
temperature returns to normal
Incorrect level detected, level error
displayed
• Pressure pipe blocked
• Carry out maintenance (
➲
Chap. „6. Maintenance“)
Multi-vane impeller blocked
• Contaminants or solids have lodged between mul-
ti-vane impeller and the spiral housing
• Clean pump (
➲
Chap. „6.3 Pump maintenance“)
Reduced performance
• Intake cage blocked
• Clean pump (
➲
Chap. „6.3 Pump maintenance“)
• Spiral housing is worn • Replace the spiral housing
• Multi-vane impeller worn • Replace multi-vane impeller
• Ventilation pipe blocked • Clean ventilation pipe
• Pressure hose blocked with condensate
• Route pressure hose with a constant incline or install
compressor kit for air bubbling.
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