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Table of Contents
Related Manuals for Fisher & Paykel 790 Active Smart
Summary of Contents for Fisher & Paykel 790 Active Smart
- Page 1 790 ACTIVE SMART REFRIGERATOR FREEZER 517800...
- Page 3 MANUAL 517800 - DATE OF ISSUE MAY 2004 The specifications and servicing procedures outlined in this manual are subject to change without notice. The latest version is indicated by the reprint date and replaces any earlier editions. Fisher & Paykel Appliances Inc Fisher &...
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Page 4: Table Of Contents
C O N T E N T S TERMINOLOGY ......................6 SPECIFICATIONS.......................7 Cabinet Specifications.........................7 Model Number Identification........................8 Serial Number Identification ........................8 SERVICING REQUIREMENTS ...................9 Interface Pen Mk 2 ..........................9 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 INSTALLATION INSTRUCTIONS ................10... - Page 5 Fault Finding Procedure........................28 6.2.1 Fault Code Display Status ....................28 6.2.2 Diagnostic Mode ........................31 6.2.3 Sensor Temperature Conversion ..................31 6.2.4 Input/Output Status......................32 6.2.5 Data Download ........................33 6.2.6 Manual Defrost ........................33 6.2.7 Show Room Mode ......................33 6.2.8 Special Option Mode (Israel) .....................34 Door Gasket - (Integral) ........................34 REMOVING AND REFITTING OF COMPONENTS..........
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Page 6: Terminology
TERMINOLOGY The following are terms used in this manual: “B” MODELS Dual temperature refrigerator/freezers in which the freezer compartment is below the refrigerator compartment. “T” MODELS Dual temperature refrigerator/freezers in which the freezer compartment is above the refrigerator compartment. FC COMPARTMENT Freezer compartment. -
Page 7: Specifications
SPECIFICATIONS Cabinet Specifications DIMENSIONS E521T E522B Height 1695mm (67.8 inches) 1695mm (67.8 inches) Depth 703mm (28.7 inches) 703mm (28.7 inches) Width 790mm (31.1 inches) 790mm (31.1 inches) CAPACITY GROSS VOLUME IN LITRES (AS 1430) Provision Compartment 400 litres (14.1 cu.ft.) 360 litres (12.7 cu.ft.) Freezer Compartment 117 litres (4.13 cu.ft.) -
Page 8: Model Number Identification
Model Number Identification The following is an example of the model number identification for Fisher & Paykel Appliances: E 522 B R E D FP SM Cabinet/Door Colour (1) Brand (Fisher & Paykel) Series (2) Style (3) Door Hinging Side (4) Freezer Location (5) Approximate Capacity in Litres (6) Type of System (7) -
Page 9: Servicing Requirements
SERVICING REQUIREMENTS Interface Pen Mk 2 Used to retrieve and download data from the electronic control module when used in conjunction with the Fisher & Paykel Smart Tool diagnostic program on a laptop computer. The part number of the interface pen is 425930. -
Page 10: Installation Instructions
INSTALLATION INSTRUCTIONS Levelling The word 'level' is somewhat of a misnomer as a 'spirit level' need not be used to set the appliance level. It is preferable to have the appliance level in appearance where both doors will close with the aid of the door closing components. -
Page 11: Air Space Requirements
Air Space Requirements On all refrigerators and freezers it is important that an air gap is left around the product: • 2 inches clearance at top • 1 inch clearance each side Temperature Adjustment Refer DISPLAY MODULE in Section 6.1.3. -
Page 12: Theory Of Operation
THEORY OF OPERATION Internal Air Flow The freezer fan draws air through the evaporator and into a duct in the rear wall of the freezer compartment. This air exits through the fan grill at the top of the freezer compartment. The air behind the freezer coil cover is also diverted through the divider partition to another fan which supplies the cold air into the provision compartment. -
Page 13: Defrost Cycle
Defrost Cycle A heating element is used to defrost the ice accumulated on the evaporator. The defrosts are adaptive to the usage and environment and are controlled by the power/control module. During a defrost, the temperature above the evaporator is sensed by the defrost sensor located on the evaporator chassis. This sensor must register +8 C (46 F) before terminating the defrost heater element. -
Page 14: The Refrigeration Circuit
The Refrigeration Circuit The compressor discharges high pressure, high temperature gas into the back panel condenser circuit first, and then into the right hand side condenser in the cabinet by way of the base tube. This tube runs from the compressor compartment forward to the front bottom edge of the cabinet, returning down the left hand side to be connected to the left hand side condenser coil. -
Page 15: Servicing Features
Servicing Features 5.4.1 Condensate Disposal During the defrost cycle, which is electronically timed and controlled, live frost is melted off the evaporator by means of heat from the defrost element. Condensate from the evaporator defrosting drops into a collection trough, which has an outlet hole in the centre of the liner. A tube then allows the condensate to flow into a water evaporation tray above the compressor. -
Page 16: Internal Condenser
5.4.2 Internal Condenser The internal condenser is made in three sections (see circuit diagram below). One third of the condenser is attached to the back panel, and the other parts are attached to the inside of the right and left sides of the cabinet wrapper (as viewed from the back) all being foamed into place. - Page 17 CONDENSER LAY OUT 680 / 790 "T" MODELS CONDENSER WITH TUBE CROSS RAIL FROM BACK PANEL CONDENSER BACK PANEL CIRCUIT REMOVED FOR CLARITY ALL BRAZED CONDENSER JOINTS ARE EXTERNAL IN UNIT COMPARTMENT Diagram 5.4.2B...
- Page 18 CONDENSER LAY OUT 680 / 790 "B" MODELS CONDENSER WITH TUBE CROSS RAIL FROM BACK PANEL CONDENSER ALL BRAZED CONDENSER JOINTS ARE EXTERNAL IN UNIT COMPARTMENT Diagram 5.4.2C...
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Page 19: Cross Rail
5.4.3 Cross Rail The cross rail contains part of the condenser copper tubing (mullion heater) providing heat to the gasket area between the PC and FC compartments, preventing sweating of the gasket. Also mounted on the cross rail is the Reed Sensor, under the plastic cover in the centre. 5.4.4 Divider Partition This is moulded in two outer pieces and has an inner polystyrene moulded duct assembly that is wax coated. -
Page 20: Electronics Section
ELECTRONICS SECTION Overview Function Description The electronic system consists of several parts: Power/control module, display module, compressor, defrost heater, ambient heater, provision compartment fan, freezer compartment fan, light, temperature sensors and door sensors. The purpose of the power/control module is to turn on the compressor, which cools the evaporator, then to use the fans to efficiently cool the compartments. -
Page 21: Display Module
STAGE 4.2 POWER/CONTROL MODULE Diagram 6.1.2 6.1.3 Display Module This module contains the user interface, and also the circuitry to drive the lamp. It is controlled via a 5-wire communications interface from the power/control module. The user interface of push button switches and Light Emitting Diode (L.E.D.) display on the display module printed circuit board is used to input and display the required set temperatures for the refrigerator compartments. -
Page 22: Compressor
6.1.5 Compressor The compressor is turned on when cooling is required. It is switched by the power/control module sending a low voltage frequency signal to the inverter. The refrigerator is fitted with a variable capacity compressor (VCC). This improves energy efficiency and maintains a more stable temperature in both the provision compartment and the freezer compartment. -
Page 23: Built-In Electronic Protections (Within The Module/Inverter)
6.1.5.2 Built-in Electronic Protections (Within the Module/Inverter) 6.1.5.2.1 Compressor Start-up In case any anomaly occurs during compressor starting, the control will wait 6 seconds before repeating the start-up. If the compressor doesn’t start after 12 trials, the control will wait 8 minutes before repeating the start-up procedure (this condition may be when pressures are not equalised between suction and discharge sides in the refrigeration system, eg;... -
Page 24: Defrost Heater
High voltage test point Signal circuit test point Photo 6.1.5.4 6.1.6 Defrost Heater A heating element is used to defrost the ice accumulated on the evaporator. The defrosts are adaptive to the usage and environment and are controlled by the power/control module. During a defrost, the temperature above the evaporator is sensed by the defrost sensor located on the evaporator chassis. -
Page 25: Thermal Fuses
6.1.7 Thermal Fuses There are two thermal fuses mounted in the wiring harness of the defrost element, having a tripping temperature of 72 C (161 F). Once open circuit they can not be reset. Replacement is part of the element heater assembly. -
Page 26: Pc / Fc Fans
6.1.9 PC / FC Fans There are two 12 Volt DC electrically commutated motor (ECM) fans. They provide the required cooling power to both compartments. The motors are provided with from 18% to 100% voltage by using a pulse width modulating (PWM) technique. The power/control module controls the switching on and off of the compressor and the fans. -
Page 27: 6.1.11 Thermistor Temperature Sensors
6.1.11 Thermistor Temperature Sensors These sensors are used to monitor temperatures within the refrigerator. There are 3 of them: 1. Defrost sensor mounted on the evaporator chassis above the evaporator, used to measure the temperature when in defrost. (Colour Black) 2. -
Page 28: Fault Finding Procedure
Fault Finding Procedure 6.2.1 Fault Code Display Status If a fault should develop in the temperature measurement system, defrost system, fans or low ambient heater, a fault code will be shown automatically on the display and the fault audio alarm will sound. At the same time, the bottom L.E.D. - Page 29 Display Code: 4 Reason: The resistance of all the temperature sensors is outside the normal range. (< 660 Ohms). Primary Action: Check the 6 way RAST connector at the power module. Secondary Action: Re-terminate the 6 way RAST connector. Tertiary Action: Replace the power module.
- Page 30 Display Code: 14 Reason: Low ambient heater is drawing more current than expected. Either there is a short in the heater or wiring, or the heater is faulty. Primary Action: Check wiring and connections at both heater and power module. Secondary Action: Check ambient heater resistance.
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Page 31: Diagnostic Mode
6.2.2 Diagnostic Mode To enter the diagnostic mode, Press and hold the MODE button, then press the TEMPERATURE UP button. The L.E.D.s indicate the PC sensor temperature. The current PC sensor temperature is displayed in a code form (refer Section 6.2.3 Sensor Temperature Conversion). Return to normal operation by pressing the MODE button. -
Page 32: Input/Output Status
Example: Add up the number corresponding to each L.E.D. that is on: 0.5 + 4 + 8 + 32 = 44.5 Subtract 40 from the result 44.5 - 40 = 4.5 Hence the temperature is 4.5 6.2.4 Input/Output Status The Input/Output Status menu displays what devices (e.g. light, PC door, FC door, compressor, etc) are currently running or turned on. -
Page 33: Data Download
6.2.5 Data Download To retrieve information from the control module, one of the following is required: • A Light Pen (part number 425930) and a Cassiopeia Smart Tool. • A Light Pen (part number 425930) and a laptop computer with the Fisher & Paykel Smart Tool diagnostic program loaded. -
Page 34: Special Option Mode (Israel)
6.2.8 Special Option Mode (Israel) The Active Smart refrigerator is fitted with a special option mode, should the customer wish to disconnect the operation of the interior lights and the alarm. To enter this mode the customer is required to push and hold the compartment select MODE button on the display board for 10 seconds. -
Page 35: Removing And Refitting Of Components
REMOVING AND REFITTING OF COMPONENTS Removal Of Power/Control Module Located in the unit compartment on the right hand side and held in place by 2 self-tapping screws. 1. Unplug the refrigerator from the power supply. 2. Remove both mounting screws and earth screw (on the green / yellow earth wire) on the compressor mounting tray. -
Page 36: Pc Fan Motor - "T" Model
PC Fan Motor - “T” Model 1. Unplug the refrigerator from the power supply. 2. Remove all PC shelving. 3. Remove bottom PC air duct cover. 4. Remove polystyrene duct cover insulation. 5. Disconnect low ambient heater. 6. Remove 1 screw from top duct cover and unclip. 7. -
Page 37: Removal Of Display Module
Removal Of Display Module 1. Unplug the refrigerator from the power supply. 2. Remove all PC shelving. 3. Remove bottom PC air duct cover. 4. Remove polystyrene duct cover insulation. 5. Disconnect low ambient heater – “T” model only. 6. Remove 1 screw from top duct cover and unclip – “T” model only. 7. -
Page 38: Replacement Of Low Ambient Heater - "B" Model
7.12 Replacement Of Low Ambient Heater - “B” Model This element is mounted in the floor of the divider and is not replaceable. If it should be found to be open circuit, a replacement low ambient heater can be fitted to the return air grill. 7.13 Replacement Of Low Ambient Heater - “B”... -
Page 39: Removal Of The Fc Evaporator Cover
7.15 Removal Of The FC Evaporator Cover Fan cover Removal Tool (T models only) The following illustration shows a tool that can be made in your workshop. This tool can be used to release and remove the freezer compartment fan cover in the Active Smart “T” model refrigerators. If preferred, the tool can be made from a screwdriver with a shaft length of approximately 200mm (7 to 8 inches) long and 4.5 mm (¼... -
Page 40: Pressure Testing Of The Refrigeration System
7.16 Pressure Testing Of The Refrigeration System The use of the in-line pressure gauge can speed up and eliminate the incorrect diagnosis of a leak within a refrigeration system. In some cases it has been found to be the service manifold that was being used that was leaking and not the system. -
Page 41: Transporting Of Refrigerators
7.17 Transporting Of Refrigerators It is preferable to transport the refrigerator in an upright position. It is recommended that: If a cabinet is to be transported lying down, then the cabinet should be placed on the right-hand side when standing facing the front of the refrigerator. If looking at the back of the refrigerator when it is laid down in this manner, you will see the power cord entering the cabinet at the bottom and the discharge and suction pipes on the compressor uppermost. -
Page 42: Wiring Diagram
WIRING DIAGRAM... -
Page 43: Service Reference
SERVICE REFERENCE “B” Models PC TOO COLD Cold Crispers * Ambient heater open circuit Check continuity of element using multimeter. (alarm will sound and fault code will be displayed) Ice In Crispers * PC fan fitted upside down Fan hub to be facing PC * PC fan not going Check voltage to plug, check wiring polarity * Air leakage base duct cover... - Page 44 FC TOO WARM Total Compartment Warm * Iced up evaporator Check defrost element is working (alarm will sound and fault code will be displayed if faulty), replace if faulty. Check doors are sealing or have they been left open, adjust and advise customer. FC fan jammed, clear restriction, replace fan if necessary.
- Page 45 NOISY FAN FC * Ice on cover Clear ice off cover and check doors are sealing * Ice on grill Clear ice off grill and check doors are sealing * Fan off mountings Refit * Wires touching Tuck wires away from fan blade * Capillary touching Shift capillary from fan area, make sure it is not touching any part of the cabinet...
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Page 46: T" Models
“T” Models PC TOO COLD * FC fan not going (alarm will Check power to plug sound and fault code will be Check polarity displayed) Replace fan * Short of gas Check run percentage, if high check evaporator Check fully flooded evaporator, check for leak * PC sensor inaccurate Check calibration of sensor ice point using interface binary or refer to thermistor resistance table in service manual... - Page 47 ALARM ON * Defrost heater Check display for any fault code Check defrost element continuity Put cabinet into manual defrost, wait for defrost relay to “click” on (2 ½ minutes after pressing buttons) If no “click”, check power/control module If “click” heard, check the defrost heater 110v output at the power/control module * Sensors Check display for fault codes 0-5...
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Page 48: Flow Diagrams
FLOW DIAGRAMS 10.1 Refrigerator Not Operating Is there Check house power to the outlet socket refrigerator? Does the display Is there Refer to Section module power to the 6.2.1 indicate a power/control fault code? module? Repair or replace faulty components Repair or replace faulty components With FC door... -
Page 49: No Power To Power/Control Module And/Or Display Module
10.2 No Power To Power/Control Module And/Or Display Module Is there power to the Is there Repair fault in power to the refrigerator? house wiring (PC light & house outlet L.E.D.s on) socket? Is continuity of power cable and Repair or replace all harness faulty components connections... -
Page 50: Pc/Fc Warm
10.3 PC/FC Warm Adjust temperature temperature settings. settings Advise customer correct? product OK Does the compressor run? Refer to Section 10.10 Does the display Refer to Section Repair or replace module 6.2.1 faulty components indicate a fault code? Is Smart Tool temperatures download of contents of... -
Page 51: Fc Too Cold - Pc Too Warm
10.4 FC Too Cold – PC Too Warm Does the display Refer to Section Repair or replace module 6.2.1 faulty components indicate a fault code? Adjust temperature temperature settings. Clear ice & check settings Advise customer for causes correct? product OK Do download Is Smart Tool Air ducts... -
Page 52: Pc Too Cold
10.5 PC Too Cold Does the display Refer to Section Repair or replace module 6.2.1 faulty components indicate a fault code? Adjust temperature temperature Advise customer settings. settings temperatures are Advise customer correct? product OK Is Smart Tool Are recorded Are actual download temperatures... -
Page 53: Ice/Condensation Forming
10.6 Ice/Condensation Forming Are the door Repair or replace gaskets faulty components sealing correctly? Does frost Is Smart Tool pattern on data evaporator indicate available? heavy usage? Explain to customer that Is the product Check that drain is some ice/condensation is getting heavy not blocked normal in heavy usage... -
Page 54: No Light
10.7 No Light With FC door Has product closed and PC been door open, press initialised? Mode button Replace faulty Check is light component bulb OK? Are all connections Repair Refer to Repair/replace Section 9.8 faulty component Replace power/control module... -
Page 55: Door Switch Not Operating
10.8 Door Switch Not Operating Switch product off and then on at power outlet to remove from any special modes Place diagnostics If available, a Smart Tool data into input/output download will verify door switch mode. Refer failures by very high door open Section 6.2.4 counts V actual openings Does FC door... -
Page 56: Defrost Heater Faults
10.9 Defrost Heater Faults Does the display Refer to Section module 6.2.1 indicate a fault code? Repair or replace faulty components Does Is Smart Tool download download confirm available? defrost failures? Are defrost heater Repair/replace resistance and faulty components connections OK? Check correct operation of Is there excessive defrost heater. -
Page 57: 10.10 Compressor Faults
10.10 Compressor Faults Compressor will Compressor will Compressor runs not run and is cold not run and is hot continuously to touch to touch Refer to Section Refer to Section Refer to Section 10.11 10.1 10.12 10.11 Compressor Runs Continuously Are the With FC door L.E.D.s on... -
Page 58: 10.12 Compressor Will Not Run And Is Hot To Touch
10.12 Compressor Will Not Run And Is Hot To Touch Has the Is current system gone being drawn by defrost into defrost mode? element? Remove FC cover. When defrost sensor Is there a full frost reaches +8 degrees C (46 pattern on the degrees F) the compressor evaporator? -
Page 59: 10.14 Refrigeration System Faults
10.14 Refrigeration System Faults Should the Wait until compressor be refrigerator running? (Check completes defrost defrost and cycle cycle temperatures) Adjust settings. Are the Advise customer compartment product OK temperatures set correctly? Remove FC cover. Check Is there a full frost temperatures pattern on the evaporator?