Table Of Contents - Fisher & Paykel 790 Active Smart Service Manual

1 TERMINOLOGY ..........................................................................................................6
2 SPECIFICATIONS.......................................................................................................7
2.1 Cabinet Specifications.........................................................................................................................7
2.2 Model Number Identification................................................................................................................8
2.3 Serial Number Identification ................................................................................................................8
3 SERVICING REQUIREMENTS ...................................................................................9
3.1 Interface Pen Mk 2 ..............................................................................................................................9
3.2 Health & Safety....................................................................................................................................9
3.2.1 Good Work Practices ...........................................................................................................9
3.2.2 Environmental Health And Safety ........................................................................................9
3.2.3 Good Practice And Safety....................................................................................................9
4 INSTALLATION INSTRUCTIONS .............................................................................10
4.1 Levelling ........................................................................................................................................... 10
4.2 Air Space Requirements .................................................................................................................. 11
4.3 Temperature Adjustment.................................................................................................................. 11
5 THEORY OF OPERATION........................................................................................12
5.1 Internal Air Flow ............................................................................................................................... 12
5.2 Defrost Cycle .................................................................................................................................... 13
5.3 The Refrigeration Circuit .................................................................................................................. 14
5.4 Servicing Features ........................................................................................................................... 15
5.4.1 Condensate Disposal........................................................................................................ 15
5.4.2 Internal Condenser ........................................................................................................... 16
5.4.3 Cross Rail.......................................................................................................................... 19
5.4.4 Divider Partition................................................................................................................. 19
6 ELECTRONICS SECTION ........................................................................................20
6.1 Overview Function Description......................................................................................................... 20
6.1.1 Control & Peripheral Functions ......................................................................................... 20
6.1.2 Power/Control Module ...................................................................................................... 20
6.1.3 Display Module ................................................................................................................. 21
6.1.4 Door Switches ................................................................................................................... 21
6.1.5 Compressor....................................................................................................................... 22
6.1.5.1
6.1.5.2
6.1.5.2.1
6.1.5.2.2
6.1.5.2.3
6.1.5.2.4
6.1.5.3
6.1.5.4
6.1.5.4.1
6.1.5.4.2
6.1.6 Defrost Heater................................................................................................................... 24
6.1.7 Thermal Fuses .................................................................................................................. 25
6.1.8 Low Ambient Heater ......................................................................................................... 25
6.1.9 PC / FC Fans .................................................................................................................... 26
6.1.10 Light .................................................................................................................................. 26
6.1.11 Thermistor Temperature Sensors ..................................................................................... 27
C O N T E N T S
Variable Capacity Compressor Control Overview ....................................................... 22
Built-in Electronic Protections (Within the Module/Inverter) ........................................ 23
Compressor Start-up............................................................................................ 23
Overload Detection and Protection ...................................................................... 23
Power Limitation (Temperature Protection) ......................................................... 23
Short Circuit Protection ........................................................................................ 23
VCC Module/Inverter Identification .............................................................................. 23
Fault Finding ................................................................................................................ 23
High Voltage Power Supply Circuit ...................................................................... 23
Signal Circuit ........................................................................................................ 23
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