- ITZAA 2/31 599 38 97-89
CONTENT
1 INTRODUCTION ....................................................................................................................................... 3
2 AIR CIRCULATION.................................................................................................................................... 6
3 REFRIGERATION CIRCUIT.................... .... ............................................. ... .............................................. 7
4 ELECTRIC WIRING................................................................................................................................... 8
5 COMPONENTS....................................................................................................................................... 10
5.1 Controls on air box...................... ... ... .... ... ... ... ... .... ... ... ... .... ... ........................................................... 10
5.2 Electronic board............................. ... .... ... ... ... ... .... ............................................. ... ........................... 10
5.2.1 Power and display board ERF550.......................................................................................... 11
5.3 Cooler compartment........................................................................................................................ 13
5.3.1 Temperature sensor ............................................................................................................... 14
5.3.2 Air box..................................................................................................................................... 14
5.3.2.1 Air box fan .................................................................................................................... 15
5.3.2.2 Cooler door switch........................................................................................................ 15
5.4 Freezer compartment ...................................................................................................................... 16
5.4.1 Cold module fan...................................................................................................................... 17
5.4.2 Defrosting heater.................................................................................................................... 17
5.4.3 Thermal switches.................................................................................................................... 17
5.5 Compressor compartment ............................................................................................................... 18
5.5.1 Connector box ........................................................................................................................ 18
6 MAIN FUNCTIONS.................................................................................................................................. 19
6.1 Normal............................................................................................................................................. 19
6.2 Normal with first switching on or power failure .................. ... ... ............................................. ... .... .... 19
6.3 Defrosting ........................................................................................................................................ 20
6.4 Flow chart for the defrosting management ...................................................................................... 22
6.5 Malfunctioning of cooler air temperature sensor.............................................................................. 23
7 ACCESSIBILITY...................................................................................................................................... 24
7.1 Freezer compartment ...................................................................................................................... 24
7.1.1 Battery evaporator.................................................................................................................. 24
7.1.1.1 Replacement of the thermal switches........................................................................... 25
7.2 Air box.............................................................................................................................................. 27
7.3 Compressor compartment ............................................................................................................... 28
8 TROUBLESHOOTING............................................................................................................................. 29
8.1 Water leakage inside the freezer compartment....... ... ... .................................................................. 29
8.2 Failed defrosting: ............................................................................................................................. 29
9 SPECIAL FUNCTIONS............................................................................................................................ 30
9.1 Manual defrosting ....... ... ... ... .... ... ... ... .... ............................................. ... ... ........................................ 30
10 DISPLAY SYMBOLS ............................................................................................................................... 31