Carrier AQUAFORCE 30XW150-400 User Manual (English)

Questions and Answers:

C
Christian EvansJul 29, 2025
How to troubleshoot a Carrier AQUAFORCE 30XW150-400 unit that does not run?
- T
  Tyler MillerJul 30, 2025
  If your Carrier Chiller unit isn't running, begin by verifying the unit is receiving power. Check the overcurrent protection device and any non-fused disconnects. If power is confirmed, ensure the unit configuration is correct and check for any active alarms or operating modes that might be preventing operation. Refer to the Alarms and Alerts and Operating Modes sections for troubleshooting instructions.
A
Amanda YoungAug 3, 2025
Why does my Carrier AQUAFORCE 30XW150-400 operate too long or continuously?
- T
  Thomas KellerAug 3, 2025
  If your Carrier Chiller runs for extended periods or continuously, several factors could be responsible. A low refrigerant charge might be the cause; check for leaks and add refrigerant as needed. Other potential issues include welded compressor or control contacts (replace the contactor or relay), air in the chilled water loop (purge the water loop), non-condensables in the refrigerant circuit (remove and recharge the refrigerant), or a malfunctioning EXV (check, clean, or replace the EXV, its cable, and the EXV board's output signal). Also, the unit may be undersized for the application if the load is too high.
K
Kimberly GrantAug 8, 2025
What to do if the compressor does not run on my Carrier Chiller?
- D
  Deanna WrightAug 8, 2025
  If the compressor on your Carrier Chiller isn't running, first check for any active alarms or operating modes that might be preventing it from starting. If no alarms are present, inspect the compressor contactor. Check the control wiring and the scroll protection module. If the contactor is inoperative, replace it.
R
Roy MooreAug 13, 2025
What causes a circuit not to load on a Carrier AQUAFORCE 30XW150-400 Chiller?
- S
  Susan TaylorAug 13, 2025
  A circuit on your Carrier Chiller might fail to load due to several reasons. Check for any active alarms or operating modes that could be preventing it from loading. Also, low saturated suction temperature, high circuit suction superheat, or low suction superheat can prevent the circuit capacity from increasing. See Operating Modes 21 and 22 and Alarms 74 and 75 for potential causes.
D
Daniel AbbottAug 18, 2025
What to do if a circuit does not run on a Carrier Chiller?
- M
  mark37Aug 18, 2025
  If a circuit on your Carrier Chiller isn't running, the issue might be due to an active alarm or operating mode. Check the alarm status and look into the operating modes to troubleshoot the problem.
E
evelynsimsAug 23, 2025
Why is the chilled water pump ON, but the Carrier AQUAFORCE 30XW150-400 Chiller machine is OFF?
- C
  Claudia SanchezAug 23, 2025
  If the chilled water pump is running but the Carrier Chiller machine is off, it could be due to cooler freeze protection. This means the chilled water loop temperature is too low. Check the cooler heater.

Carrier AQUAFORCE 30XW150-400 Specifications

General

Model	30XW150-400
Efficiency	High Efficiency
Cooling Capacity (kW)	Varies by model (See product data)
Power Supply	Varies by model (See product data)
Dimensions (LxWxH)	Varies by model
Weight	Varies by model

Summary

General Information and Display Usage

Conventions Used in This Manual

Explains the conventions used for discussing configuration points and navigating menus.

Display Module Usage

Details the usage of the Touch Pilot and Navigator displays, including button functions.

Chiller Controls Overview

Control System Components

Lists the components of the ComfortLink electronic control system.

Main Base Board (MBB)

Describes the Main Base Board as the core of the control system, managing operations.

Electronic Expansion Valve (EXV) Board

EXV Board DIP Switch Configuration

Details the DIP switch settings for EXV boards for different unit models.

MLV/Condenser Board and Auxiliary Settings

Auxiliary Board DIP Switch Addresses

Provides DIP switch addresses for auxiliary boards A, B, and C for configuration.

Chiller Control Interfaces and Modules

Enable-Off-Remote Contact Switch (SW1)

Provides a local means of enabling or disabling the machine via a 3-position switch.

Emergency On/Off Switch (SW2)

Explains the Emergency On/Off switch's function and immediate power interruption.

Energy Management Module (EMM)

Describes the EMM's role in receiving inputs for temperature reset and demand limit functions.

Carrier Comfort Network (CCN) Interface and Configuration

Remote Alarm and Alert Relays

Details the chiller's capability for remote alert and alarm annunciator contacts.

Touch Pilot™ Operation Configuration Tables

Explains configuration tables accessible via Network Service Tool or ComfortVIEW software.

Machine Control Methods

TOUCH PILOT MACHINE CONTROL

Describes machine on/off control via the Touch Pilot display's Start/Stop button.

NAVIGATOR™ DISPLAY MACHINE CONTROL

Explains machine on/off control via Navigator display configuration.

CCN Control and Entering Fluid Configuration

CCN Control

Explains how the chiller operates under CCN control via network commands.

Entering Fluid Control Option

Details the option to configure the machine for entering water control.

Cooling Set Point Selection

Explains various options for controlling the Leaving Chilled Water Set Point.

Chilled Water Fluid Type Selection

FRESH WATER

Configures the unit for fresh water systems without brine or glycol.

BRINE OR GLYCOL OPERATION

Configures the unit for brine or glycol chilled water loops for freeze protection.

Cooler Pump Control and Configurations

Cooler Pump Control

Explains the requirement for cooler pump control utilization unless pumps run continuously.

Cooler Pump Control Configurations

Details various cooler pump control options: no pump, single, dual, and manual.

Machine Start Delay and Compressor Staging

Machine Start Delay

Explains the option to delay machine start to prevent simultaneous starts or for alarm timing.

Circuit/Compressor Staging and Loading

Explains how the control is configured to stage and load compressors for wear leveling.

Minimum Load Control

Describes the minimum load control option for operation during the first stage of cooling.

Dual Chiller Control and Pump Operation

Dual Chiller Control

Details the dual chiller routine for controlling two units in series or parallel.

DUAL CHILLER CONTROL FOR PARALLEL APPLICATIONS

Details configuration for master and slave chillers in parallel applications.

DUAL CHILLER CONTROL FOR SERIES APPLICATIONS

Outlines configuration for master and slave chillers in series applications.

Series Pump Control, Ramp Loading, and Temperature Reset

DUAL CHILLER PUMP CONTROL FOR SERIES CHILLER APPLICATIONS

Explains pump control for series chiller applications managed by the master chiller.

Ramp Loading

Limits the rate of change of leaving fluid temperature based on configured rates.

Temperature Reset

Explains how temperature reset adds a value to the set point for chiller control.

Temperature Reset Types

SPACE TEMPERATURE RESET

Describes temperature reset based on space temperature (SPT) using an accessory sensor.

4-20 mA TEMPERATURE RESET

Describes temperature reset based on an externally powered 4 to 20 mA signal.

Demand Limit Features and Configuration

DEMAND LIMIT

Explains the feature that limits unit capacity during peak energy usage to reduce costs.

SWITCH CONTROLLED DEMAND LIMIT

Details demand limit based on field-supplied switches for 1 or 2 steps.

EXTERNALLY POWERED (4 to 20 mA) CAPACITY BASED DEMAND LIMIT

Explains 4 to 20 mA control based on unit capacity using an external signal.

Ice Storage Operation and Broadcast Configuration

ICE STORAGE OPERATION

Explains chiller operation configuration for making and storing ice using energy management module.

BROADCAST CONFIGURATION

Describes the chiller's capability to broadcast time, date, and holiday status to CCN elements.

Alarm Control Features

ALARM CONTROL

Covers alarm routing, equipment priority, and communication failure retry time settings.

Alarm Management and Time Configuration

RE-ALARM TIME

Specifies the time between re-alarms when conditions persist.

ALARM SYSTEM NAME

Specifies the system element name appearing in alarms generated by the unit control.

Daylight Saving Time Configuration

Enables automatic correction for daylight saving time, adjustable via Touch Pilot.

Capacity Control Overrides

Lists capacity control overrides that modify normal operation routines based on conditions.

Pre-Start-Up Procedures

PRE-START-UP

Outlines the critical preparation steps before the chiller can be started.

System Check

Details the necessary checks to ensure the unit is level and properly installed.

Chiller Start-Up and Operating Limitations

ACTUAL START-UP

Provides step-by-step instructions for the actual start-up procedure.

Operating Limitations

Lists the unit's operating temperature limits and voltage requirements.

Low Condenser Water Temperature Operation

Details requirements for operation with entering condenser water temperatures below 65 F.

Chiller Operation Sequences

SEQUENCE OF OPERATION

Explains the sequence of events for starting, loading, and shutting down a chiller circuit.

Dual Chiller Sequence of Operation

Explains the sequence for dual chiller operation, including master/slave roles.

Operating Modes

Lists override modes that affect normal equipment operation, with corresponding capacity control overrides.

Specific Operating Modes

STARTUP DELAY IN EFFECT

Mode active when the unit off-to-on delay timer is active.

SECOND SETPOINT IN USE

Mode active when Cooling Setpoint 2 or Ice Setpoint is in use.

RESET IN EFFECT

Mode active when Temperature Reset is enabled and functioning.

DEMAND LIMIT ACTIVE

Mode active when Demand Limit is enabled, reducing capacity based on input.

RAMP LOADING ACTIVE

Mode active when Ramp Loading is enabled and specific temperature conditions are met.

COOLER PUMPS ROTATION

Mode active when the cooler pump sequence is 2-pump and the rotation delay has expired.

PUMP PERIODIC START

Mode active when the cooler pump is started due to the periodic start configuration.

SYSTEM MANAGER ACTIVE

Mode active when a System Manager is controlling the unit, responding to its commands.

MASTER SLAVE CONTROL ACTIVE

Mode active when Master Slave Control is enabled for dual chiller operation.

ICE MODE IN EFFECT

Mode active when the Ice Setpoint is in use, indicating ice-making operation.

Sensors and Their Locations

THERMISTORS

Lists thermistors used for temperature sensing and their identification.

TRANSDUCERS

Identifies the four pressure transducers used per circuit and their types.

Service Procedures for Economizer and EXV

Economizer Assembly

Describes the economizer assembly and its main electronic expansion valve.

Electronic Expansion Valve (EXV)

Explains the EXV's function, operation, and control logic.

MAIN EXV CONTROL

Details how the main EXV is controlled using discharge superheat.

EXV Troubleshooting and Disassembly

EXV TROUBLESHOOTING PROCEDURE

Provides steps to diagnose and correct EXV problems, including motor operation checks.

Inspecting/Opening Electronic Expansion Valves

Provides steps for checking the physical operation of an EXV and its motor.

Compressor Assembly and Oil System

Compressor Assembly

Describes the screw compressors with modulating slide valves and capacity control.

COMPRESSOR OIL SYSTEM

Describes the oil system components for each compressor and circuit.

Oil Charge and Cooler Service

OIL CHARGE

Details specifications for oil type, manufacturer, and ISO viscosity grade.

Oil Filter Maintenance

Explains how to monitor and maintain the oil filter for pressure drop.

Cooler

Details the suction service valve for the cooler and its operation.

Fluid Temperature Limits and Protection

LOW FLUID TEMPERATURE

Explains the shutdown condition if leaving fluid temperature drops below set limits.

LOSS OF FLUID FLOW PROTECTION

Explains the integral flow switch protecting the cooler against loss of cooler flow.

TUBE PLUGGING

Describes how a leaky tube can be plugged until retubing is performed.

RETUBING

Outlines procedures for retubing coolers, requiring qualified personnel.

TIGHTENING COOLER HEAD BOLTS

Provides torque specifications and sequence for tightening cooler head bolts.

Heat Exchanger Maintenance and Water Treatment

INSPECTING/CLEANING HEAT EXCHANGERS

Details inspection and cleaning of cooler tubes and thermistor wells.

WATER TREATMENT

Stresses the importance of proper water treatment to prevent corrosion and scaling.

CHILLED WATER FLOW SWITCH

Details the factory-installed flow switch and troubleshooting steps for nuisance trips.

Refrigerant Circuit, Safety Devices, Maintenance, and Troubleshooting

REFRIGERANT CIRCUIT

Covers leak testing and refrigerant charging procedures for the system.

SAFETY DEVICES

Lists major safety devices and protection logic built into the electronic control.

MAINTENANCE

Provides a recommended maintenance schedule for monthly and quarterly tasks.

TROUBLESHOOTING

Refers to an abbreviated list of symptoms, causes, and remedies for troubleshooting.

Alarms and Alerts Management

ALARM CONTROL FEATURES

Covers alarm routing, equipment priority, and communication failure retry time settings.

Specific Alarm Conditions and Troubleshooting

COMPRESSOR MOTOR TEMPERATURE TOO HIGH

Details the alarm generated when compressor motor temperature exceeds limits.

COMPRESSOR MOTOR TEMPERATURE OUT OF RANGE

Details the alarm generated when compressor temperature is outside acceptable limits.

COMPRESSOR HIGH PRESSURE SWITCH PROTECTION

Describes the alarm triggered if the circuit high-pressure switch opens.

COMPRESSOR OVERCURRENT

Explains the alarm for motor current exceeding a percentage of MTA.

COMPRESSOR LOCKED ROTOR

Details the alarm for high motor current detected during start-up.

COMPRESSOR PHASE LOSS

Describes alarms for current unbalance across motor phases.

COMPRESSOR LOW CURRENT

Explains the alarm for low motor current indicating potential issues.

Specific Alarm Conditions and Protection

REPEATED LOW SUCTION TEMPERATURE PROTECTION

Critical alarm for system operation due to persistent low suction temperatures.

Suction Gas Thermistor

Details the alarm for suction gas temperature being outside its normal range.

Circuit Discharge Gas Thermistor Sensor Failure

Alarm for failure of the discharge gas thermistor sensor.

Economizer Gas Thermistor

Details the alarm for economizer gas temperature being outside its normal range.

Discharge Transducer

Describes the alarm for discharge transducer voltage being 0 vdc.

Pressure Transducer Alarms and Communication Failures

SUCTION PRESSURE TRANSDUCER FAILURE

Critical sensor failure alarm for suction pressure transducer.

Oil Pressure Transducer

Details alarms for oil pressure transducer readings indicating low oil pressure.

Economizer Pressure Transducer Failure

Describes alarms for economizer pressure transducer voltage being 0 vdc.

Loss of Communication with Compressor Board

Alarm triggered if communication with Compressor Protection Module Board is lost.

Loss of Communication with EXV Board

Alarm triggered if communication with EXV Board 1 or 2 is lost.

Master/Slave, Suction Superheat, and Interlock Alarms

ALARM 10 — MASTER/SLAVE COMMON FLUID THERMISTOR

Specific alarm for common fluid thermistor failure in master/slave configurations.

Suction Gas Thermistor

Specific alarm for suction gas temperature being outside its normal range.

HIGH SUCTION SUPERHEAT

Critical alarm for EXV control indicating high suction superheat.

Low Suction Protection and Interlock Alarms

REPEATED LOW SUCTION TEMPERATURE PROTECTION

Critical alarm for system operation due to persistent low suction temperatures.

Alarm 80 — Interlock Failure

Specific alarm for interlocks, particularly the energy management module lockout switch.

Alarm 81 — Electrical Box Thermostat Failure/Reverse Rotation

Alarm related to electrical components, specifically external pump interlock.

Alarm 82 — Loss of Communication with System Manager

Critical communication failure alarm if System Manager communication is lost.

Alarm 83 — Master/Slave communication Failure

Critical communication failure alarm if master/slave machine communication is lost.

Low Oil Pressure

Critical alarms for oil pressure transducer readings indicating low oil pressure.

Filter Pressure Drop, Oil Level, and Configuration Alarms

MAX OIL FILTER DIFFERENTIAL PRESSURE FAILURE

Maintenance related alarm indicating excessive oil filter differential pressure.

High Oil Filter Pressure Drop

Alarm indicating a dirty oil filter if pressure drop exceeds 30 psi for over 5 minutes.

Low Oil Level Failure

Critical compressor protection alarm for low oil level conditions.

Alarm 96 — Master Chiller Configuration Error

Configuration error alarm indicating mismatches in master/slave settings.

Alarm 97 — Initial Factory Configuration Required

Configuration error alarm if the Unit Capacity Model is not set, requiring factory configuration.

Alarm 98 — Illegal Configuration

Alarm for illegal configuration errors detected by the control.

Alarm 99 — Unit is in Emergency Stop

Safety condition alarm triggered by a CCN command for Emergency Stop.

Service Test Procedures

SERVICE TEST

Essential diagnostic tool to verify proper operation of chiller devices.

SERVICE TEST WITH NAVIGATOR™ DISPLAY

Explains how to use Service Test mode with the Navigator display for component testing.

SERVICE TEST WITH TOUCH PILOT™ DISPLAY

Details entering Manual Control and Quick Test modes using the Touch Pilot display.

Appendix A: Touch Pilot Display Tables

TOUCH PILOT DESCRIPTION

Defines the columns and structure of the Touch Pilot display tables.

Appendix B: Navigator Display Tables

MODE — RUN STATUS

Lists Navigator display parameters related to the unit's current operating status.

MODE — TEMPERATURE

Lists Navigator display parameters for various temperature readings within the system.

Appendix B: Navigator Display Tables (Continued)

MODE — PRESSURE

Lists Navigator display parameters for various pressure readings.

MODE — INPUTS

Lists Navigator display parameters for various system inputs.

Appendix B: Navigator Display Tables (Continued)

MODE — OUTPUTS

Lists Navigator display parameters for various system outputs.

MODE — CONFIGURATION

Lists Navigator display parameters for system configuration settings.

Appendix B: Navigator Display Tables (Continued)

MODE — CONFIGURATION (cont)

Continues listing Navigator display parameters for system configuration.

Appendix B: Navigator Display Tables (Continued)

MODE — CONFIGURATION (cont)

Continues listing Navigator display parameters for system configuration.

Appendix B: Navigator Display Tables (Continued)

MODE — TIMECLOCK

Lists Navigator display parameters related to time schedule and clock functions.

Appendix B: Navigator Display Tables (Continued)

MODE — TIMECLOCK (cont)

Continues listing Navigator display parameters for time schedule and clock functions.

Appendix B: Navigator Display Tables (Continued)

MODE — TIMECLOCK (cont)

Continues listing Navigator display parameters for time schedule and clock functions.

Appendix B: Navigator Display Tables (Continued)

MODE — OPERATING MODE

Lists Navigator display parameters for various operating modes.

MODE — ALARMS

Lists Navigator display parameters for current and historical alarms.

Appendix C: CCN Tables