TABLE OF CONTENTS
9. Diagnostics ........................................................................................................................................................................... 61
9.1. Board alarms ........................................................................................................................................................... 61
9.1.1. Probe 1 Faulty: air probealarm................................................................................................................. 61
9.1.2. Probe 2 Faulty: evaporator probe alarm ................................................................................................... 62
9.1.3. Probe 3 Faulty: condenser probe alarm .................................................................................................... 63
9.1.4. Overheat.Cond.: overheated condenser alarm ......................................................................................... 64
9.1.5. Comp. Locked: locked compressor alarm ................................................................................................. 65
9.1.6. Rtc error: clock module alarm .................................................................................................................. 66
9.1.7. Minimum Temp.: low temperature in cell alarm ....................................................................................... 67
9.1.8. Maximum Temp.: high temperature in cell alarm ..................................................................................... 68
9.1.9. Door open: door open alarm.................................................................................................................... 69
9.1.10. Power Failure: power supply interruption alarm ....................................................................................... 70
9.1.11. Defrost.Timeout: defrosting concluded by duration.................................................................................. 71
9.2. Malfunctions not managed by board ........................................................................................................................ 72
9.2.1. The display board does not switch on ...................................................................................................... 72
9.2.2. The display board is on but the relay outputs are not managed ................................................................ 73
9.2.3. The display board is on but it is not possible to access the functions by pressing the keys ......................... 74
9.2.4. The compressor does not work during the cooling phase.......................................................................... 75
9.2.5. The system works but the equipment does not cool ................................................................................. 76
9.2.6. Ice formation on evaporator .................................................................................................................... 78
9.2.7. Formation of ice on evaporator casing, air intake and exhaust duct .......................................................... 80
9.2.8. Condensation formed on the cabinet frame lids ....................................................................................... 82
9.2.9. Water overflow from condensate drain tray ............................................................................................. 83
9.2.10. The evaporator fan does not work ........................................................................................................... 84
10. Wiring diagrams.................................................................................................................................................................... 85
11. Service contacts .................................................................................................................................................................... 87