Service manual
Table Of Contents
- SAFETY SUMMARY
- INTRODUCTION
- DESCRIPTION
- MICROPROCESSOR
- 3.1 TEMPERATURE CONTROL MICROPROCESSOR SYSTEM
- 3.2 CONTROLLER SOFTWARE
- 3.3 MODES OF OPERATION
- 3.4 PROTECTION MODES OF OPERATION
- 3.5 QUEST - CCPC
- 3.6 CONTROLLER ALARMS
- 3.7 PRE-TRIP DIAGNOSTICS
- 3.8 DataCORDER
- 3.9 CONTROLLER CONFIGURATION VARIABLES
- 3.10 CONTROLLER FUNCTION CODES
- 3.11 CONTROLLER ALARM INDICATIONS
- 3.12 CONTROLLER PRE-TRIP TEST CODES
- OPERATION
- TROUBLESHOOTING
- 5.1 UNIT WILL NOT START OR STARTS THEN STOPS
- 5.2 UNIT OPERATES LONG OR CONTINUOUSLY IN COOLING
- 5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING
- 5.4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING
- 5.5 UNIT WILL NOT TERMINATE HEATING
- 5.6 UNIT WILL NOT DEFROST PROPERLY
- 5.7 ABNORMAL PRESSURES
- 5.8 ABNORMAL NOISE OR VIBRATIONS
- 5.9 MICROPROCESSOR MALFUNCTION
- 5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW
- 5.11 EAUTOFRESH NOT OPERATING
- 5.12 ELECTRONIC EXPANSION VALVE MALFUNCTION
- 5.13 AUTOTRANSFORMER MALFUNCTION
- 5.14 COMPRESSOR OPERATING IN REVERSE
- 5.15 ABNORMAL TEMPERATURES
- 5.16 ABNORMAL CURRENTS
- SERVICE
- 6.1 SECTION LAYOUT
- 6.2 MANIFOLD GAUGE SET
- 6.3 SERVICE CONNECTIONS
- 6.4 PUMP DOWN THE UNIT
- 6.5 REFRIGERANT LEAK CHECKING
- 6.6 EVACUATION AND DEHYDRATION
- 6.7 REFRIGERANT CHARGE
- 6.8 COMPRESSOR
- 6.9 HIGH PRESSURE SWITCH
- 6.10 CONDENSER COIL
- 6.11 CONDENSER FAN AND FAN MOTOR
- 6.12 FILTER DRIER
- 6.13 EVAPORATOR COIL & HEATER ASSEMBLY
- 6.14 EVAPORATOR FAN AND MOTOR ASSEMBLY
- 6.15 EVAPORATOR SECTION CLEANING
- 6.17 ECONOMIZER SOLENOID VALVE
- 6.18 ECONOMIZER EXPANSION VALVE
- 6.19 DIGITAL UNLOADER VALVE
- 6.20 VALVE OVERRIDE CONTROLS
- 6.21 AUTOTRANSFORMER
- 6.22 CONTROLLER
- 6.23 TEMPERATURE SENSOR SERVICE
- 6.24 VENT POSITION SENSOR (VPS)
- 6.25 eAutoFresh SERVICE
- 6.26 MAINTENANCE OF PAINTED SURFACES
- 6.27 COMMUNICATIONS INTERFACE MODULE INSTALLATION
- ELECTRICAL WIRING SCHEMATICS
T-362
2−11
CONDENSER
COMBO ETS1
AND ETS2
EVAPORATOR
DISCHARGE
SERVICE
VALVE
SUCTION
SERVICE
VALVE
FILTER
DRIER
LIQUID LINE
SERVICE VALVE
ECONOMIZER
SOLENOID
VALVE
ECONOMIZER
TXV
ELECTRONIC
EXPANSION
VALVE
DIGITAL
UNLOADER
VALVE
ECONOMIZER
RECEIVER
COMPRESSOR
SIGHT
GLASS
LIQUID LEVEL/
MOISTURE
INDICATOR
ECONOMIZED OPERATION
DISCHARGE
PRESSURE
TRANSDUCER
DISCHARGE
TEMPERATURE
SENSOR
ECON. TXV
SENSING BULB
EVAPORATOR PRESSURE
TRANSDUCER
SUCTION PRESSURE
TRANSDUCER
Figure 2−7 Refrigeration Circuit Schematic − Economized Operation