Fisher & Paykel RX256DT4X1 FP Service Manual page 4

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8 ELECTRONIC CONTROL BOARD...............................................................................................33
8.1 Full Electronic Specification Control Board (RX256DT7X1) ...................................................34
8.1.1 Programming Mode .........................................................................................................34
8.1.2 Forced Defrost Mode .......................................................................................................35
8.1.3 Service Test Mode...........................................................................................................35
8.1.4 Service Test Mode - Navigation.......................................................................................36
8.1.4.1 Service Test 001 - Power-Up Test Results...............................................................36
8.1.4.2 Service Test 101 - Defrost Heater. ...........................................................................37
8.1.4.3 Service Test 102 - Compressor/Condenser System. ...............................................38
8.1.4.4 Service Test 112 - Freezer Fan Operation. ..............................................................38
8.1.4.5 Service Test 121 - Damper Operation. .....................................................................39
8.1.4.6 Service Test 141 - Refrigerator Thermistor (See Thermistor Chart in Section 8.1.13).
..................................................................................................................................39
8.1.4.7 Service Test 142 - Freezer Thermistor Test. (See Thermistor Chart in Section
8.1.13).......................................................................................................................40
8.1.4.8 Service Test 143 - Ambient Thermistor Test. (See Thermistor Chart in Section
8.1.13).......................................................................................................................40
8.1.4.9 Service Test 152 - Freezer Door State. ....................................................................41
8.1.4.10 Service Test 161 - Cube Dispense Test. ..................................................................41
8.1.4.11 Service Test 162 - Crush Dispense Test. .................................................................42
8.1.4.12 Service Test 163 - Water Dispense Test. .................................................................42
8.1.4.13 Service Test 164 - Ice Chute Test. ...........................................................................42
8.1.4.14 Service Test 165 - Dispenser Light Test...................................................................43
8.1.4.15 Service Test 171 - Actuator Pad Test.......................................................................43
8.1.4.16 Service Test 172 - Sports Fill Test............................................................................43
8.1.4.17 Service Test 173 - Ambient Light Test......................................................................44
8.1.4.18 Service Test 174 - Dispenser Water Actuator (Bottom Mount units only).................44
8.1.4.19 Service Test 175 - Dispenser Line Test....................................................................44
8.1.4.20 Service Test 181 - Keypad Operation Test...............................................................45
8.1.4.21 Service Test 182 - Indicator Operation Test. ............................................................46
8.1.4.22 Service Test 191 - Valve State Test. ........................................................................46
8.1.4.23 Service Test 241 - Main Control Software. ...............................................................46
8.1.4.24 Service Test 242 - Main Display Software. ...............................................................46
8.1.4.25 Service Test 243 - Main Fountain Software..............................................................46
8.1.4.26 Thermistor Reference Chart .....................................................................................47
8.1.5 Show Room Mode ...........................................................................................................47
8.1.6 Sabbath Mode .................................................................................................................47
8.1.7 Fahrenheit or Celsius Mode.............................................................................................48
8.1.8 Cooling Fan Mode ...........................................................................................................48
8.1.9 Alarm Enable Mode .........................................................................................................48
8.1.10 Light Level Mode .............................................................................................................48
8.1.11 Filter Status Light.............................................................................................................48
8.1.12 Filter Status Light Reset ..................................................................................................49
8.1.13 Thermistor Resistance Chart ...........................................................................................49
8.2 Troubleshooting Flow Chart (RX256DT7X1) ..........................................................................50
8.2.1 Compressor Does Not Turn On .......................................................................................50
8.2.2 Evaporator Fan Does Not Turn On..................................................................................51
8.2.3 Damper Does Not Move ..................................................................................................52
8.2.4 Damper Opens and Never Closes...................................................................................53
8.2.5 Flashing Display at Power Up..........................................................................................54
8.2.6 Blank Display ...................................................................................................................55
8.3 Mid Electronic Specification Control Board (RX256DT4X1, RX256ET2B1, RX256ET2W1) ..56
8.3.1 Programming Mode .........................................................................................................56
8.3.2 Forced Defrost Mode .......................................................................................................57
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