Carrier TP-NAC, TP-PHP, TP-PAC Troubleshooting, Error Codes, Temperature Offset After Power Cycle

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Temperature Offset After Power Cycle

To compensate for internal heat build−up from the electronics in the thermostat, the thermostat will add an offset to the actual temperature that it measures. If the thermostat power is cycled quickly, one can witness an immediate increase in the actual temperature displayed due to this added offset. The thermostat display will return to the actual room temperature after several minutes of operation.

TROUBLESHOOTING

If the display module doesn’t power up after power is applied, check the Rc/Rh and C terminals for 24VAC. If 24VAC is present, check the voltage between Vg and V+. This voltage will be approximately 12−20VDC. If voltage is present, check the polarity to make sure it is wired correctly. The display will not power up if polarity is reversed.

If dashes appear for Option 01 in config and during reboot, the problem could be the red pigtail being wired to Rc or Rh and the black pigtail being wired to C. If so, remove the two−wire pigtail and connect to the V+ and Vg terminals.

Error Codes

“−−” − If AC/HP Control cannot properly read room temperature, display will indicate “−−” and all outputs (except fan, if on) will turn off. In the case where the installer has selected to average the local sensor and the remote room sensor, the AC/HP display will alternate between “−−” for the failed sensor and the temperature sensed by the working sensor every 10 seconds. The control will operate from the temperature sensed by the working sensor.

E1 − If the Display Module and the Equipment Control Module cannot communicate via two−wire connection, an E1 will be displayed.

E2 − There is no E2 error message.

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Contents Programmable Control Non−Programmable Control Installation InstructionsPage Safety Considerations Table of ContentsIntroduction Power Installation ConsiderationsModels Outdoor Temperature SensorTwo−Piece Thermostat Configuration Remote Indoor Temperature SensorWiring InstallationAC/HP Control Location − TP−NAC / TP−NHP Carton ContentsElectrical Operation Hazard Install AC/HP ControlUnit Damage Hazard − Press Tabs to Remove Backplate Two−Piece Installation− Take Apart − Backplate Mounting Relays − Secure Wires to Terminal Strip − Attach Display to Backplate − Equipment Control Module on Equipment − Standoff − Cover on Equipment Control Module Single−Piece Installation − Equipment Control Module − Reattach Display Module Set AC/HP Control ConfigurationPage To Enter Configuration Mode Option 01 Equipment Type Configuration Options -SelectionOption 04 Fan G On With W/W1 Option 02 Clean Filter TimerOption 03 Fahrenheit/Centigrade Option 06 Cooling Lockout Below 55F/13C − Remote Room Sensor − Parallel WiringOption 10 Reversing Valve Option 08 Auxiliary Heat Lockout TemperatureOption 07 Zoning Option 15 Enable Auto Mode Option 11 Deadband Setting Between Heat & CoolOption 12 Smart Recovery Option 13 Room Air Temperature Offset AdjustOption 17 Time Between Equipment Stages Option 18 Backlight ConfigurationOption 16 Maximum Cycles Per Hour Option 21 Keypad Lockout programmable models only Option 20 Outdoor Air Temperature Offset AdjustmentOption 21 Keypad Lockout non−programmable models only Page Option 26 Minimum Cooling Setpoint Option 24 Programmable/Non−ProgrammableOption 25 Number of Programmable Periods Option 30 Programmable Fan programmable models only Option 27 Maximum Heating SetpointOption 28 UV Light Reminder Page Option 44 Super Comfort Heat Option 33 Single or Two−Piece InstallationOption 41 Variable Speed Blower Option 99 Reset to Factory Defaults System START−UP and Checkout Energy Star Default Schedule Final SettingsVacation programmable models only Operational Information TimersDefrost Ten−Minute Staging TimerThree−Minute Minimum on Time Equipment On IndicatorsHeat/Cool Setpoints Desired Temperature Emergency Heat ModeRelays Programmable Fan programmable models onlyDry Contact Temperature Offset After Power Cycle TroubleshootingError Codes Page Equipment Configuration Outputs − Equipment Configuration Outputs − Display to Equipment Control Module Connection Wiring DiagramsWiring DIAGRAMScont − Fan Coil shown with Auxiliary Connection #1 − Fan Coil with Air Conditioner Indicates connection may not be required/available − Furnace with Air Conditioner − Thermostat with Dry Contact Control for Run Time Outdoor Sensor Remote Room Air Conditioner − Single−stage Furnace with Air Conditioner and Split Power Mode Settings Thermostat Configuration RecordConfiguration Options Configuration Options Page Catalog No TP-PAC-3SI

TP-PHP, TP-NHP, TP-NAC, TP-PAC specifications

Carrier TP-PAC, TP-NAC, TP-NHP, and TP-PHP are part of Carrier's advanced product lineup designed for efficient, reliable, and high-performance heating and cooling systems. These products cater to various applications, from commercial to industrial, ensuring optimal climate control while maximizing energy efficiency.

The TP-PAC (Packaged Air Conditioner) is engineered for easy installation and maintenance, providing robust performance in diverse settings. This unit features high-efficiency compressors and advanced refrigerant management technology, which reduces energy consumption while maintaining superior cooling capabilities. Its modular design allows for easy scalability, enabling businesses to adjust their cooling capacity as required. Moreover, the TP-PAC is equipped with an intelligent control system that monitors performance metrics in real-time, facilitating proactive maintenance and reducing downtime.

The TP-NAC (Air-Cooled Chiller) incorporates cutting-edge technology to enhance its operational efficiency. This chiller utilizes advanced variable-speed compressor technology, which adapts to varying load conditions, significantly reducing energy costs. Its environmentally friendly refrigerant options comply with the latest regulations, further enhancing its sustainability profile. The TP-NAC is perfect for applications that demand precise temperature control, making it ideal for data centers and manufacturing facilities.

The TP-NHP (Heat Pump) is designed for year-round climate control, capable of both heating and cooling. This versatile unit employs a new-generation hot gas reheat system, allowing it to maintain comfortable indoor temperatures even during extreme weather conditions. Additionally, the TP-NHP features advanced zoning capabilities, permitting customized temperature settings for different areas of a building. This flexibility not only enhances comfort but also optimizes energy expenditure.

The TP-PHP (Packaged Heat Pump) combines the efficiency of the TP-NHP with a compact design perfect for urban installations where space is limited. It boasts quiet operation, making it suitable for residential areas and noise-sensitive environments. The unit's smart technology features enable users to monitor and control their systems remotely, providing convenience and peace of mind.

In summary, Carrier's TP-PAC, TP-NAC, TP-NHP, and TP-PHP represent the forefront of heating and cooling technology. With their emphasis on efficiency, reliability, and cutting-edge features, these units are well-equipped to meet the demands of modern climate control in diverse applications. By prioritizing energy efficiency and sustainable practices, Carrier continues to lead the way in the HVAC industry, ensuring comfortable and environmentally friendly solutions for all users.
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