Field Actions
DISPATCHAlways disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.
Frequently Asked Questions: Favorit ER09
FAQ TREEWhat does error code ER09 mean on a Favorit appliance?
Favorit error code ER09 indicates: Favorit SwissBake / CombiSteam Built-in Pyrolytic Convection Oven: Diagnostic fault code ER09 registered by the microcomputer controller. Built-in oven front glass touch user interface board SPI/I2C communication lost (code ER09).
What is the root cause of Favorit error code ER09?
The primary root cause for Favorit code ER09 is: On Favorit SwissLine and European precision appliances built for high durability engineered with PT1000 platinum RTD probe (1080 Ω at 20°C), 2400W convection circular element (22-25 Ω), radial exhaust cooling turbine (160-220 Ω), and motorized door interlock latch: connecting ribbon cable disconnected, electrical noise on clock line (SCL), or 5V DC auxiliary rail drop. Metrological tolerance verification: auxiliary DC supply 5.0V ± 0.15V DC; I2C clock (SCL) and data (SDA) lines pull up cleanly to 5V DC with pull-ups..
How do I fix or resolve Favorit error code ER09?
To resolve error code ER09: Disconnect mains power before servicing. Unplug the harness at the main PCB and use a calibrated digital multimeter: check ribbon cable seating between display and power PCB, verify 5V DC voltage on header pins with multimeter. Inspect contacts for pin oxidation or loose terminals. Replace defective part if out of tolerance, re-energize and clear error: Turn temperature knob to Off. Press and hold Clock and Stop buttons for 5 seconds until confirmation tone sounds, wiping error state from EEPROM.
Is it safe to clear Favorit error code ER09 by resetting power?
Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Favorit code ER09 persists, the physical component causing On Favorit SwissLine and European precision appliances built for high durability engineered with PT1000 platinum RTD probe (1080 Ω at 20°C), 2400W convection circular element (22-25 Ω), radial exhaust cooling turbine (160-220 Ω), and motorized door interlock latch: connecting ribbon cable disconnected, electrical noise on clock line (SCL), or 5V DC auxiliary rail drop. Metrological tolerance verification: auxiliary DC supply 5.0V ± 0.15V DC; I2C clock (SCL) and data (SDA) lines pull up cleanly to 5V DC with pull-ups. must be inspected or replaced.
How do I test electrical resistance for Favorit code ER09 using a multimeter?
Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..
What safety protocol must be followed before servicing Favorit code ER09?
Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.
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