ESBE GDA300 High-Efficiency Pumps Instruction Manual
Electric installation
Assembly Instructions
WILO – Faults, Causes and Remedies
| LED Indicator | Meaning | Diagnostic | Cause | Remedy |
| lights green | Pump in operation | Pump runs according its setting | Normal operation | |
| lights orange | Pump is in PWM mode | Pump is speed controlled by the PWM signal | Normal operation | |
| blinks red/ green | Pump in function but stopped | Pump restarts by itself after the fault is disappeared | 1. Undervoltage U<160 V or Overvoltage U>253 V 2. Modul overheating: temperatur inside motor too high | 1. Check voltage supply 195 V < U < 253 V 2. Check water and ambient temperature |
| blinks red | Pump out of function | Pump stopped (blocked) | Pump does not restart by itself due to a permanent failure | Change pump |
| blinks orange | Pump out of function | Pump stopped | Pump is not starting | Change pump |
| LED off | No power supply | No voltage on electronics | 1. Pump is not connected to power supply 2. LED is damaged 3. Electronics are damaged | 1. Check cable connection 2. Check if pump is running 3. Change pump |
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