PAGE 130GX / HX ComfortLink Screw Chiller Service Manual
CARRIER
SCREW
SERVICE MANUAL
30GXN/30GXR SERIES 4, AIR-COOLED CHILLERS30HXA SERIES 4, CONDENSERLESS CHILLERS30HXC SERIES 4, WATER-COOLED CHILLERS
SPIKE17
PAGE 2 30GX / HX ComfortLink Screw Chiller Service Manual
TABLE OF CONTENTS 1-5
Safety Consideration 5Introduction 6Controls 7Changing the Password 7Condenser Pump Control 7Condenser Pump Interlock 8Head Pressure Control 8Operating Modes 8MDO1-FSM Controlling Chiller 8MDO2-WSM Controlling Chiller 8MDO3-Master/Slave Control 8MDO4-Low Source Protection 8MDO5-Ramp Load Limited 8MDO6-Timed Override in Effected 9MDO7-Low Cooler Suction Temp. A 9MDO8-Low Cooler Suction Temp. B 9MD1O-Slow Change Override 9MD11-Low Discharge Superheat A 9MD12-Low Discharge Superheat B 9MD13-Dual Setpoint 9MD14-Temperature Reset 9MD15-Demand Limit in Effect 9MD16-Cooler Freeze Protection 9MD17-Low Temp Cool/High Temp Heat 9MD18-High Temp Cool/Low Temp Heat 9MD19-Making Ice 10MD20-Storing Ice 10MD21-High SCT Circuit A 10MD22-High SCT Circuit B 10MD23-High Motor Current Circuit A 10MD24-High Motor Current Circuit B 10Service 11Chilled Water Flow Switch 11Comfort Link Compressor Protection Module 13Cooler Liquid Level Sensor 26Cooler Pump Control 26Oil Separator 27Transducers 27Thermistors 27Alarm and Alert Codes 28Communication Failure 28T020-Compressor A1 High Motor Temperature Alert 28
PAGE 3 30GX / HX ComfortLink Screw Chiller Service ManualT021-Compressor A2 High Motor Temperature Alert 28T022-Compressor B1 High Motor Temperature Alert 29T023-Compressor B2 High Motor Temperature Alert 29T026-Compressor A1 Low Oil Pressure Alert 29T027-Compressor A2 Low Oil Pressure Alert 29T028-Compressor B1 Low Oil Pressure Alert 29T029-Compressor B2 Low Oil Pressure Alert 29T030-Compressor A1 Pre-Start Oil Pressure Alert 30T031-Compressor A2 Pre-Start Oil Pressure Alert 30T032-Compressor B1 Pre-Start Oil Pressure Alert 30T033-Compressor B2 Pre-Start Oil Pressure Alert 30T034-Compressor A1 Maximum Oil Delta P, Check Oil Line Alert 32T035-Compressor A2 Maximum Oil Delta P, Check Oil Line Alert 32T036-Compressor B1 Maximum Oil Delta P, Check Oil Line Alert 32T037-Compressor B2 Maximum Oil Delta P, Check Oil Line Alert 32T038-Compressor A1 Failed Oil Solenoid Alert 32T039-Compressor A2 Failed Oil Solenoid Alert 32T040-Compressor B1 Failed Oil Solenoid Alert 32T041-Compressor B2 Failed Oil Solenoid Alert 32T051-Compressor A1 Failure Alert 33T052-Compressor A2 Failure Alert 33T055-Compressor B1 Failure Alert 33T056-Compressor B2 Failure Alert 33High Pressure Switch Trip Alert 33No Motor Current Detected Alert 34Current Unbalance Alert 34Single Phase Current Loss Alert 35High Motor Current Detected Alert 36Compressor Ground Fault Alert 36Contactor Failure Alert 37Current Phase Reversal Alert 38Motor Over Temperature Alert 39Open Thermistor Alert 39MTA Header Fault Alert 40MTA Alert 40Shorted Thermistor Alert 41A060-Cooler Leaving Water Thermistor Failure Alarm 41A061-Cooler Entering Water Thermistor Failure Alert 41
A062-Condenser Leaving Water Thermistor Failure Alert 41A063-Condenser Entering Water Thermistor Failure Alert 41T070-Circuit A Discharge Gas Thermistor Failure Alert 42T071-Circuit B Discharge Gas Thermistor Failure Alert 42