American Power Conversion Central Air Conditioning System Alarm messages and suggested actions

Page 46

Operation: Respond to Alarms

Alarm messages and suggested actions

Displayed Alarm Message

Action Required

 

 

Air Block Interlock Open

• Verify that the air block is in place.

 

• Confirm that the wiring connections for the air block interlock are secure.

 

 

Air Filter Clogged

• Verify the condition of the return air filters, and replace them if required.

 

• Check the pressure drop across the filters by reviewing the System status.

 

• Ensure that the pressure-sensing tubing is properly connected to the sensor.

 

• Verify that the ends of the pressure-sensing tubing are not blocked or placed

 

incorrectly.

 

• Verify that the correct filter is selected in the System Options menu (Path:

 

Main > Setup > System > System Config > System Options).

 

 

Airflow Low

• Check the pressure drop across the filters, and replace the filters if necessary.

 

• Check the pressure drop across the evaporator coil on the pressures screen of

 

the display interface (Path: Main Menu > Status > [Module] > Pressures).

 

The reading should be close to the recommended coil differential pressure

 

drops indicated in the table “Coil Differential Pressure Values” on page 17. If

 

the reading is too low based on Module size and options installed, adjust the

 

blower speed.

 

• Verify the proper operation of the Variable Frequency Drive (VFD) and

 

blower motors.

 

• Verify that the VFD overload alarm is not active.

 

• Ensure that any field-installed dampers in the discharge duct are open.

 

• Verify that the Mode Delay is not too short. If the Mode Delay is too short,

 

the Airflow Low alarm occurs after start-up and resolves itself after a few

 

minutes.

 

 

Backup is Load Sharing

• A backup System is contributing to meet the room load.

 

• No action required. The backup will return to idle when the demand falls.

 

 

Backup System Idle

• A primary System has come back online after a failover event.

 

• No action required.

 

 

Backup System Online

• Indicates that a System failover has occurred. The backup System has come

 

online due to another online System that either failed or was commanded off.

 

A System Comm Loss is considered to be a System failure if the Comm

 

Loss Failover configuration setting is Yes (the default setting).

 

• Check the System’s event log to determine the cause of the System failure.

 

 

Blower 1 Requires Maintenance

• Verify operation of Blower 1 and perform preventive maintenance.

 

• Reset the maintenance alarm for Blower 1 on the display interface.

 

 

Blower 2 Requires Maintenance

• Verify operation of Blower 2 and perform preventive maintenance.

 

• Reset the maintenance alarm for Blower 2 on the display interface.

 

 

Condensate Pump Fail

• Verify that the condensate pump circuit breaker has not been tripped.

 

• Ensure that the wiring between the float switch for the condensate pump and

 

the controller is secure.

 

• Confirm that the condensate removal lines are free of debris and are

 

unobstructed.

 

• Confirm the line voltage at the condensate pump.

 

• Ensure that the condensate float switch is moving freely and does not bind.

 

• Confirm that the condensate pump reservoir is clean and free of debris.

 

• Replace the condensate pump.

 

 

40

NetworkAIR IR Operation, Maintenance, and Troubleshooting

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Contents NetworkAIR IR Precision Air Conditioner Page Contents Set Up Alarms Network Management Card Maintenance Operation Display InterfaceUsing the Display Scrolling status screensMain menu screen Navigating the interfaceChange settings Password entryStart the System Stop the System Set Up System Configuration System OptionsOperation Set Up System Configuration System Delays Sensor setup Building managementFluid-Coil Type Applicable Settings Options for Fluid-Cooled ModulesValve Types Actuator TypesCoil Fluid Temp Activation Threshold and Deadband Set Up Contacts and Relays Input contactsOutput relays Map Description/FunctionOperation Set Up Contacts and Relays Configure Module Set Up Module ConfigurationAlarm detectors Calibrate airflow manually Set Up Module ControlCalibrate airflow automatically Reset humidifier Reset variable frequency driveSet up Humidifier Reset compressors Control the Environment How the modes workSetpoints Modes DeadbandsEssential Functions PID controls How to tune the PIDs Loop Behavior PID Tuning CorrectionHumidification sensitivity Temperature alarms Set Up AlarmsHumidity alarms Maint intervals Alarm delayCoil fluid thresholds Set Up Group Group configGroup settings Sys failure eventsOperation Set Up Group Temperature & pressure units Set Up the DisplayPassword & Time-out Date and timeAdjust display How to update the firmwareReset to defaults Product dataSet Up Network Configuration Network configView Status Readings Module statusSystem status View Event Log Group statusView Log View active alarms Respond to AlarmsMajor or minor alarm LEDs Control beeperClear active alarms Reset sys failureAlarm messages and suggested actions Displayed Alarm Message Action RequiredDisplayed Alarm Message Action Required Check that the # Systems setting Path Main Setup Group Group Module Module in which the alarm occurred Module Control Displayed Alarm Message Action Required Displayed Alarm Message Action Required Page Quick Configuration OverviewAPC Device IP Configuration Wizard TCP/IP configuration methodsBootp & Dhcp configuration Network Management Card Quick Configuration Option 43 = 01 04 31 41 50 Local access to the control console Remote access to the control console Control consoleNetwork Management Card Quick Configuration Web interface How to Access a Configured UnitTelnet/SSH Snmp FTP/SCP How to Recover From a Lost Password How to Upgrade Firmware Upgrade the AOS. For example Page Monthly Preventive Maintenance EnvironmentMechanical CleanlinessElectrical Quarterly Preventive Maintenance Record the amperages for the following componentsFunctional tests Semi-Annual Preventive Maintenance Page Troubleshooting Troubleshooting Semi-Annual Preventive Maintenance Problem Possible Cause Corrective Action Page Terms of warranty Limited Product Warranty for APC ProductsAPC product covered Drawings, descriptions Assignment of warrantiesExclusions Limited Product Warranty for APC Products Claims Warranty ProceduresLabor Parts Page Page APC Worldwide Customer Support

Central Air Conditioning System specifications

American Power Conversion (APC) is renowned for delivering innovative solutions in the realm of power management, but its contributions don't stop there. The company has also made significant advancements in central air conditioning systems. Featuring cutting-edge technologies and energy-efficient designs, their HVAC systems are tailored to meet modern needs while ensuring comfort and sustainability.

One of the standout features of APC central air conditioning systems is their variable speed compressor technology. This advanced system operates at different speeds rather than just cycling on and off. By adjusting the compressor speed to match the cooling demand, these systems optimize energy consumption, leading to lower electricity bills and extended equipment lifespan.

APC's systems also incorporate smart thermostat capabilities, allowing homeowners to monitor and control their air conditioning remotely. Through a mobile app, users can adjust temperature settings, create schedules, and receive maintenance alerts, all of which enhance convenience and efficiency. Furthermore, these smart thermostats can learn user habits over time, automatically adjusting temperature settings to maximize comfort and savings.

Another key characteristic of APC central air conditioning systems is their commitment to eco-friendly refrigerants. Utilizing low global warming potential (GWP) refrigerants, these systems minimize the environmental impact while maintaining high-performance standards. With energy efficiency ratings that often exceed industry benchmarks, APC systems contribute to reduced greenhouse gas emissions and help homeowners adopt sustainable practices.

The design of APC air conditioning units is also noteworthy. They are constructed with durable materials that withstand various weather conditions, ensuring reliability during the hottest months. Additionally, the streamlined design of these systems enhances aesthetic appeal, making them a suitable choice for modern homes.

In conclusion, the American Power Conversion central air conditioning system exemplifies the synergy of innovative technology, energy efficiency, and user-friendly features. With variable speed compressors, smart controls, eco-friendly refrigerants, and robust construction, APC provides homeowners with a dependable and sustainable climate control solution. As demand for energy-efficient products continues to grow, APC is poised to lead the way in intelligent air conditioning solutions that prioritize both comfort and environmental responsibility.
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