Field Actions
DISPATCHAlways disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.
Frequently Asked Questions: Novomatic AL24
FAQ TREEWhat does error code AL24 mean on a Novomatic appliance?
Novomatic error code AL24 indicates: Novomatic GS / GSU Integrated & Freestanding Electronic Dishwasher Series: Diagnostic fault code AL24 registered by the microcomputer controller. Rinse aid optical reed switch circuit open or dispensing reservoir float magnet stuck.
What is the root cause of Novomatic error code AL24?
The primary root cause for Novomatic code AL24 is: On Novomatic Austrian and Central European retail OEM chassis appliances engineered with Austrian retail OEM wash system with 1800W flow tube element (27-31 Ω), wash motor (95-125 Ω), and pressure membrane switch: internal magnetic float jammed by dried rinse aid residue or reed glass capsule broken. Metrological tolerance verification: reed switch contact continuity < 0.5 Ω with full reservoir, open circuit > 1 MΩ empty under 5 VDC..
How do I fix or resolve Novomatic error code AL24?
To resolve error code AL24: Disconnect mains power before servicing. Unplug the harness at the main PCB and use a calibrated digital multimeter: measure continuity across reed sensor pins with multimeter; fill dispenser with warm water to free stuck float. Inspect contacts for pin oxidation or loose terminals. Replace defective part if out of tolerance, re-energize and clear error: press and hold the Program selector and Start buttons together for 5 seconds until the display beeps and drain pump evacuates remaining water.
Is it safe to clear Novomatic error code AL24 by resetting power?
Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Novomatic code AL24 persists, the physical component causing On Novomatic Austrian and Central European retail OEM chassis appliances engineered with Austrian retail OEM wash system with 1800W flow tube element (27-31 Ω), wash motor (95-125 Ω), and pressure membrane switch: internal magnetic float jammed by dried rinse aid residue or reed glass capsule broken. Metrological tolerance verification: reed switch contact continuity < 0.5 Ω with full reservoir, open circuit > 1 MΩ empty under 5 VDC. must be inspected or replaced.
How do I test electrical resistance for Novomatic code AL24 using a multimeter?
Set a digital multimeter to ohms (Ω). Disconnect power and test Mechanical Pressure Switch Contacts / Inductive Frequency Sensor across Across switch spade contacts with harness unplugged; electronic output: 40Hz–50Hz frequency signal. Expected nominal reading is Mechanical: Continuity 0.0Ω–0.2Ω (Empty: 11-12, Full: 11-14). Electronic: 20Ω–45Ω coil resistance.. Tolerance: Mechanical switch contacts must transition cleanly on gentle breath pressure. Coil ~22Ω ±5%..
What safety protocol must be followed before servicing Novomatic code AL24?
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.
Community Verification
COMMUNITYDid this solution resolve the issue?