PURPOSE OF THIS MANUAL The purpose of this Service Manual is to provide Service Engineers who are already familiar with repair procedures with information regarding the PCB. The manual deals with the following topics: o PCB general characteristics o Disassembly Document Revisions Rev.
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ERF501L GENERAL CHARACTERISTICS ERF501L has two ACS power boards with an integrated UI. Technical specification Operating voltage input: 230 Vac Frequency range: Temp. LED Superfrost LED On/Off Temp. control Superfrost Reset temp. alarm Q&CI - Technical Support...
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ERF501L CONNECTORS Sidekick 4-pol User interface Fan DC: GND, +12 V DC Door switch NTC-sensor, NTC Fridge, +5V, NTC Evaporator, +5V Compressor and defrost heater, N, L, Compressor Q&CI - Technical Support...
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ERF501L CONNECTORS • J5 SUPPLY Pin 1 220 N • Pin 3 220 L • Pin 4 Compressor • Pin 5 Heating element • J1 FAN DC Pin 1 Fan • Pin 2 +12 V DC • Pin 1 NTC Refrigerator •...
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SERVICE MODE LED COMBINATIONS Service mode can be started with a cold or warm appliances. The only exception is when testing the digital input heater switch that requires a cold appliance. When service mode starts, all light indications are on and all components are off. Service mode activates multiple components simultaneously.
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SERVICE MODE LED COMBINATIONS Service mode feedback consists of light combinations. Table note: FR: Refrigerator, FZ: Freezer, EV: Evaporator AC output test Tests AC loads connected to the appliance, only physically mounted components are displayed. When service mode starts, all components are switched off. AC Load FR compressor FZ compressor...
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Damper test DC Heater Local damper Remove damper blinking Heater test DC Heater UI anti condensation heater DC frame heater Digital input test Digital input open: light on. Digital input closed: light off. Action key is not used in this phase. Digital input FR door FZ door...
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ALARMS ERF501L Temperature alarm The LED blinks if the temperature moves outside a set threshold. • The LED continues to blink until the alarm is reset by pushing the Reset button for 3 seconds. • The LED turns off automatically when the temperature returns to within the temperature threshold.