Electrolux ERF501L User manual

© ELECTROLUX HOME PRODUCTS
Consumer Service - EMEA
Quality & Continuous Improvement - Technical Support
SERVICE MANUAL
Food preservation
FOR INTERNAL AND PARTNERS USE ONLY
COLD APPLIANCES WITH ELECTRONIC
CONTROL SYSTEM
ERF501L
EN
Publication number
599 76 28 - 60
Edition: 04/2019 - Rev. 00

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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:
oPCB general characteristics
oDisassembly
Document Revisions
Rev. Date Description Author
00 04/2019 Document creation Anna Grimlund
SAFETY
All the work to be performed inside the appliance requires specific skills and knowledge
and may only be carried out by qualified and authorised Service Engineers
Before you access internal components, take the plug out of the socket to disconnect the
power supply.
Some of the components in the mechanical part could cause injuries, so wear suitable
protection and proceed with caution.
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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
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ERF501L CONNECTORS
A
Sidekick 4-pol
B
User interface
C
Fan DC: GND, +12 V DC
D
Door switch
E
NTC-sensor, NTC Fridge, +5V, NTC Evaporator, +5V
F
Compressor and defrost heater, N, L, Compressor
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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
J4
•Pin 1 NTC Refrigerator
•Pin 2 +5V
•Pin 3 NTC Evaporator
•Pin 4 +5V
J6
•Pin 1 GND
•Pin 2 NC
•Pin 3 Door switch
J DAAS
•Pin 1 ASY OUT
•Pin 2 ASY IN
•Pin 3 +5V
•Pin 4 GND
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ERF501L MONTAGE
A: Additional Fixation
B: Fixation in compartment
B
A
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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. Sensors are self-diagnosing while components must be checked manually.
Turning a component on provides electricity to the component. This makes it possible to test that the power supply is
getting through and if there is voltage absorption.
For example, if activating the refrigerator compressor does not work, use a tester to see whether the motor or the
power board causes the problem.
Activate service mode on interfaces with LED combinations
1. Switch on the appliance
2. Unplug the appliance
3. Wait 10 seconds
4. Plug in the appliance
5. Wait 6 seconds.
6. Press key for 5 seconds - the key must be pressed within 6 to 16 seconds after power-on
The same key is used for all commands. The key varies between user interfaces, see images below.
Command
Press
Action
Indicator
Service mode
Hold key for 5 seconds within 6 - 16
seconds of starting the appliance. Enter service mode All lights on
Next Long press
Moves service mode to
next component Lights switched off
Action Short press
Activate and deactivate
components
Lit when command is
applicable
Exit service
mode Hold for 5 seconds. Exit service mode None
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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
1
2
3
4
5
FR compressor
on
FZ compressor
blinking
Heater
on
FR lamp
on
on
AC EV fan
on
blinking
AC FR fan
blinking
EV electro valve
blinking
on
AC Zero degree fan
blinking
blinking
Water faucet
on
FZ lamp
on
on
Auger motor
on
blinking
Ice selector
on
on
AC condenser fan
on
on
on
Perfect drawer
on
on
blinking
Balance heater
on
blinking
Frame heater
on
blinking
on
FR VCC compressor
on
on
blinking
blinking
FZ VCC compressor
on
blinking
Condenser electro valve
on
blinking
blinking
Digital output test
All digital outputs connected to electronics are automatically switched off at the start of the test.
Digital output
1
2
3
4
5
FR lamp
on
blinking
on
Zero degree lamp
on
blinking
blinking
DC EV fan
on
blinking
on
DC FR fan
on
blinking
on
on
DC Zero-degree fan
on
blinking
on
blinking
DC Condenser fan
on
blinking
blinking
FZ lamp
on
blinking
blinking
blinking
DC Air filter fan
on
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Damper test
DC Heater
1
2
3
4
5
Local damper
on
on
Remove damper
on
blinking
Heater test
DC Heater
1
2
3
4
5
UI anti condensation heater
on
on
DC frame heater
on
on
on
Digital input test
Digital input open: light on.
Digital input closed: light off.
Action key is not used in this phase.
Digital input
1
2
3
4
5
FR door
on
on
on
FZ door
on
on
on
on
Zero degree door
on
on
on
blinking
Heater switch
on
on
blinking
Ice maker
on
on
blinking
on
Paddle
on
on
blinking
blinking
Rapid drink cooler
on
on
on
Temperature probe test
Unlike the loads and digital outputs, the sensors are not activated electronically by pressing a key and
their activation is signalled by a yellow light which lights up to the right.
If the circuit breaker is open the light is lit.
Digital input
1
2
3
4
5
FR air
blinking
on
on
blinking
FZ air
blinking
on
on
on
FR EV
blinking
on
on
on
on
Zero degree air
blinking
on
on
on
blinking
PB ambient
blinking
on
on
blinking
UI ambient
blinking
on
on
blinking
on
FZ EV
blinking
on
blinking
UI ambient humidity
blinking
on
blinking
on
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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.
No other buttons work on the UI until the alarm is reset.
Super freeze mode deactivates the freezer temperature control and no alarm is activated even though the
temperature is outside of the threshold.
Door alarm
The door alarm is activated if the door is left open for a certain period of time. The temperature key and set
temperature LED starts to flash LED on for 500ms then LED off for 500ms. The door alarm stops when the door is
closed.
•Fridge door: 5 minutes
•Freezer door: 80 seconds
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