Alaska RF01

Alaska error code RF01 indicates: Alaska KSR / FR Static & NoFrost Refrigerator-Freezer Line: Diagnostic fault code RF01 registered by the microcomputer controller. NoFrost automatic defrost heating element open circuit or zero thermal dissipation during defrost cycle.

The primary root cause for Alaska code RF01 is: On Alaska commercial private label appliances distributed by Metro AG engineered with Metro commercial refrigeration circuit with R600a compressor, 2.5 kΩ NTC sensors, and 240W defrost heating element (210-250 Ω): nichrome heating spiral burned open from localized thermal fatigue or melted connection terminal. Metrological tolerance verification: heater element resistance 210-255 Ω at 20°C (rated 220-250W at 230 VAC); insulation to ground > 10 MΩ..

To resolve error code RF01: Disconnect mains power before servicing. Unplug the harness at the main PCB and use a calibrated digital multimeter: disconnect defrost heater wiring harness, measure resistance with digital multimeter expecting 210-255 Ω; replace calrod assembly. Inspect contacts for pin oxidation or loose terminals. Replace defective part if out of tolerance, re-energize and clear error: press and hold the Super Cool and Freezer Alarm buttons simultaneously for 6 seconds until the microcomputer emits two audible acknowledgement tones.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Alaska code RF01 persists, the physical component causing On Alaska commercial private label appliances distributed by Metro AG engineered with Metro commercial refrigeration circuit with R600a compressor, 2.5 kΩ NTC sensors, and 240W defrost heating element (210-250 Ω): nichrome heating spiral burned open from localized thermal fatigue or melted connection terminal. Metrological tolerance verification: heater element resistance 210-255 Ω at 20°C (rated 220-250W at 230 VAC); insulation to ground > 10 MΩ. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Compressor Motor Windings (Run/Start) & Defrost Heater across Across 3 compressor pins (Common, Run, Start): R(C-S) + R(C-R) = R(S-R). Winding to earth: >20MΩ (OL).. Expected nominal reading is 15Ω–25Ω (Run C-R), 20Ω–35Ω (Start C-S), 200Ω–400Ω (Defrost Heater). PTC Relay: 10Ω–30Ω at 25°C.. Tolerance: ±10%. Any low insulation resistance to casing (<2MΩ) trips the breaker. Defrost bimetal reads <0.5Ω when sub-zero..

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.