ARP Fridge Defend Troubleshooting Manual page 4

3.3 *Err (first dot on upper left)..................................................................................... 10
3.4 OPn Boiler Sensor ................................................................................................... 10
3.5 SHt Boiler Sensor .................................................................................................... 11
3.6 -LO Boiler Sensor Reading ..................................................................................... 11
3.7 *O*F*8 ....................................................................................................................... 11
3.8 *H*O*8 ....................................................................................................................... 11
3.9 OR (OA) Fan Temp Reading ................................................................................... 11
3.10 bAd ......................................................................................................................... 11
3.11 F4 or F5 SetUp Button Test .................................................................................. 11
3.12 E8 Error .................................................................................................................. 12
3.13 E10 Flashing when Test ARP with SetUp Button ............................................... 12
3.14 E11 Trigger Event .................................................................................................. 12
3.15 F1 MCU ADC Error Checker.................................................................................. 12
3.16 F2 at ARP Startup .................................................................................................. 12
3.17 F3 Boiler Sensor ADC Cal..................................................................................... 12
3.18 CRC Tests .............................................................................................................. 12
3.19 E12, E14, E15 MCU Tests ...................................................................................... 12
3.20 ARP Reset Procedure............................................................................................ 13
INTRODUCTION to FRIDGE REPAIR.................................................................................... 13
4.1 Refrigerant ............................................................................................................... 13
4.2 Boiler Operation ...................................................................................................... 13
4.3 Boiler Pump ............................................................................................................. 13
4.4 ARP Control and the Boiler .................................................................................... 13
4.5 Burping a SPAR....................................................................................................... 13
4.6 Abnormalities and Operator Discretion................................................................. 13
HEAT SOURCES .................................................................................................................... 14
5.1 Temperature & Pressure ......................................................................................... 14
5.2 Low LP Gas Pressure.............................................................................................. 14
5.3 Test Each Heat Source............................................................................................ 14
SPAR PRESSURE .................................................................................................................. 14
6.1 Low Cooling Unit Pressure..................................................................................... 14
DIAGNOSTIC VARIABLE....................................................................................................... 15
7.1 AtO Value ................................................................................................................. 15
7.2 AtS ............................................................................................................................ 15
7.3 AbS ........................................................................................................................... 15
7.4 tr................................................................................................................................ 15