Field Actions
DISPATCHAlways disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.
Frequently Asked Questions: Favorit I21
FAQ TREEWhat does error code I21 mean on a Favorit appliance?
Favorit error code I21 indicates: Favorit SwissLine / DIVA SilentTech Fully Integrated Precision Dishwasher: Diagnostic fault code i21 registered by the microcomputer controller. Dishwasher drain pump permanent magnet rotor mechanically blocked by glass shard or bone fragment (code i21).
What is the root cause of Favorit error code I21?
The primary root cause for Favorit code I21 is: On Favorit SwissLine and European precision appliances built for high durability engineered with Hydro-Flow wash circulation pump with tachometer (80-120 Ω), 2000W flow-through heater (25-28 Ω), electronic analog pressure transmitter, turbidity optic sensor, and AquaStop base pan float switch: foreign debris bypasses sump coarse mesh into impeller volute chamber, preventing synchronous rotor stepping. Metrological tolerance verification: drain pump motor current rises to 0.75-1.10A when stalled; normal running current is 0.18-0.28A under load..
How do I fix or resolve Favorit error code I21?
To resolve error code I21: Disconnect mains power before servicing. Unplug the harness at the main PCB and use a calibrated digital multimeter: remove coarse filter assembly, unclip drain impeller safety cover, remove glass shards with pliers and test free spin. Inspect contacts for pin oxidation or loose terminals. Replace defective part if out of tolerance, re-energize and clear error: Press and hold Start/Reset button for 4 seconds until drain pump initiates, then turn off power for 60 seconds to clear active error code.
Is it safe to clear Favorit error code I21 by resetting power?
Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Favorit code I21 persists, the physical component causing On Favorit SwissLine and European precision appliances built for high durability engineered with Hydro-Flow wash circulation pump with tachometer (80-120 Ω), 2000W flow-through heater (25-28 Ω), electronic analog pressure transmitter, turbidity optic sensor, and AquaStop base pan float switch: foreign debris bypasses sump coarse mesh into impeller volute chamber, preventing synchronous rotor stepping. Metrological tolerance verification: drain pump motor current rises to 0.75-1.10A when stalled; normal running current is 0.18-0.28A under load. must be inspected or replaced.
How do I test electrical resistance for Favorit code I21 using a multimeter?
Set a digital multimeter to ohms (Ω). Disconnect power and test Drain Pump Motor Stator Coils across Across pump motor spade terminals (L-N unclipped). Expected nominal reading is 160Ω–220Ω (Sync 230V) / 20Ω–45Ω (3-Phase BLDC). Tolerance: ±10% balance. Insulation resistance between coil and motor chassis must exceed 20MΩ..
What safety protocol must be followed before servicing Favorit code I21?
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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