| Error Code | Appliance | Meaning | Safe first steps | Technician required | Related help |
|---|---|---|---|---|---|
| HIGHVOLT | Refrigerator | The mains voltage exceeds the permitted limiting value. | Wait until the mains voltage returns to the permitted range. | Yes — if the warning lasts for longer; contact the energy supply company / electrician. | |
| C0 | Induction Hobs | Error-type fault code; internal error or malfunction and the cooktop cannot continue normal operation. The exact underlying condition is not publicly decoded in the official manual. | Disconnect the cooktop from the power supply, wait a few seconds, reconnect it, and check whether the display clears. | Yes — if the code appears again after reconnection. | |
| E115 | Oven | Appliance is too hot. | Switch off the oven and let it cool down. | Yes — if the code returns after cooling. | |
| E215 | Oven | Appliance is too hot. | Switch off the oven and let it cool down. | Yes — if the code returns after cooling. | |
| E:3400 | Dishwasher | Water is continuously running into the appliance. | Turn off the water tap / close the water supply valve immediately. | Yes — call customer service. | |
| E:6102 | Dishwasher | Drain pump blocked or drain pump cover loose. | Clean the wastewater / drain pump and secure the pump cover until it clicks into position. | Yes — if drainage does not return after cleaning. | |
| E:6103 | Dishwasher | Water is not draining; siphon connection closed, wastewater hose kinked / blocked, pump blocked, or no high loop. | Check and open the siphon connection, straighten the wastewater hose, remove residues, clean the pump, and ensure a high loop is present. | Yes — if the code returns after the listed checks. |
Gaggenau Appliance Fault Codes and Precision Service Insight in the Bay Area
Gaggenau fault codes often point to water supply, drain, heating, voltage, sensor, electronics, overheating, or cooling control issues. Hotline Appliance Repair helps Bay Area homeowners, businesses, and property teams understand these warnings before expert diagnosis and service.

