F70 error; oven or range may lock out some functions; often indicates watchdog or software fault.

Safety: Turn off power at the breaker before touching internal components.

• Power reset: Disconnect power for at least 10 minutes to fully reset the control. Restore power and test.
• Check ventilation: Ensure control area vents are not blocked and that the cooling fan (if present) operates.
• Stable supply: Avoid sharing the circuit with heavy‑load appliances that cause voltage dips.
• Control replacement: If F70 recurs frequently, the main control module may be defective and require replacement. Some models may need firmware reprogramming by Miele service.