Dishwasher shows E08 and may stop during heating or drying phase; dishes come out cold and wet.

Safety first: Disconnect power at the breaker before accessing internal components. Heating circuits carry mains voltage.

Steps:

• Confirm symptom: Run a hot program and, after 15–20 minutes, carefully touch the outer door or side panel. If it remains completely cold and E08 appears, the heater is likely not operating.
• Access heater: On many Blomberg models, the heater is integrated into the circulation pump (heat pump). Remove the base panel to locate the assembly and inspect wiring and connectors for burning or looseness.
• Check resistance: With a multimeter and power disconnected, measure resistance across the heater terminals. An open circuit indicates a failed heater.
• Inspect NTC sensor: The NTC is usually clipped into the sump or heater housing. Check its connector and wiring.

When to call a technician: Replacing an integrated heater/circulation pump or repairing a control board heater relay is complex and should generally be done by a qualified technician.