To Next PageTo Next PageWhat to do if my Carrier 48FC 07 Air Conditioner completely stops?
If your Carrier Air Conditioner stops completely, first, check the faults and alerts list to understand why it shut down. After identifying and fixing the issue, restart the unit. It's recommended to diagnose the unit in Service Test mode before running it normally and reset any faults before the control function can operate.
What does Fault F010 mean on my Carrier Air Conditioner?
Fault F010 on your Carrier Air Conditioner indicates a low voltage issue, possibly due to a brownout, low supply voltage, or a missing phase in the supply power. The control system will shut down the unit, but it should automatically clear once the supply voltage rises above 19 volts AC.
What does Fault F011 mean on my Carrier Air Conditioner?
Fault F011 indicates that the MBB reference voltage is out of range, usually due to an MBB failure or the supply voltage being out of range. The control system will shut down the unit. This fault should automatically clear when the DC reference voltage returns to its normal range.
What does Alert A012 mean on my Carrier Air Conditioner?
Alert A012 on your Carrier Air Conditioner signals an MBB zero crossing issue, often caused by an MBB failure or the supply voltage frequency being too high or too low. The alert should automatically clear once the supply voltage returns to the normal range.
What does Fault F013 mean on my Carrier 48FC 07 Air Conditioner?
Fault F013 on your Carrier Air Conditioner indicates that MBB Fuse 2 is open, typically due to a wiring error in a switch input or the switch pulling too much current. The control will shut down the unit, but the fault should automatically clear when the fuse temperature returns to normal.
What does Fault F014 mean on my Carrier 48FC 07 Air Conditioner?
Fault F014 on your Carrier Air Conditioner means that MBB Fuse 3 is open. This is usually caused by a wiring error in a switch input or the switch drawing too much current. The control system will shut down the unit, and the fault should clear automatically once the fuse temperature is back in the normal range.
What does Alert A015 mean on my Carrier 48FC 07?
Alert A015 on your Carrier Air Conditioner indicates that the MBB RNET voltage is out of range, generally due to an MBB failure or the supply voltage being out of range. The alert should automatically clear when the voltage returns to its normal range.
What does Alert A016 mean on my Carrier 48FC 07 Air Conditioner?
Alert A016 on your Carrier Air Conditioner indicates that the MBB 24VDC voltage is out of range, usually due to an MBB failure or the supply voltage being out of range. When this alert is active, Analog Input numbers 6, 7, and 8 will be in error. The alert should automatically clear when the voltage rises above 19 volts DC.
What does Alert A017 mean on my Carrier 48FC 07?
Alert A017 on your Carrier Air Conditioner indicates that the MBB 5VDC voltage is out of range, typically caused by an MBB failure or the supply voltage being out of range. When this alert is active, transducer inputs will be in error. The alert should automatically clear when the voltage rises above 4.5 volts DC.
What does Fault F018 mean on my Carrier Air Conditioner?
Fault F018 on your Carrier Air Conditioner indicates an MBB EEPROM failure, meaning the serial EEPROM chip on the MBB, which stores the unit’s configuration, is not responding. Recovery is automatic, but you might need to replace the MBB board. Before replacing the board, try cycling the power to the control.
General| Brand | Carrier |
|---|---|
| Model | 48FC 07 |
| Category | Air Conditioner |
| Language | English |
General safety information, precautions, and signal words for working with equipment.
Warning regarding potential electrical shock during service operations.
Overview of the SystemVu unit management system.
How to navigate and operate the SystemVu interface.
How to navigate and operate the Navigator display accessory.
Steps for preparing the unit before start-up.
Location and description of refrigerant service ports.
Information on the crankcase heater operation.
How to verify and correct compressor rotation.
Details on power supply requirements and connections.
Inspection and pressure checks for gas heat sections.
Importance of documenting set points and configuration changes.
Completing initial startup prompts.
Wiring space temperature sensors to T-55 terminals.
Using thermostat input for humidistat.
Using RH sensor input for dehumidification.
How CCN communication is managed by linkage devices.
Configuring the unit for field-installed economizers.
Configuring the unit for field-installed power exhaust.
Configuring the unit for field-installed electric heat.
Changing output status for various components.
Testing indoor fan speeds.
Changing output status for cooling and Humidi-MiZer.
Changing output status for heating stages.
Thermostat inputs for cooling/heating control.
Using humidistat input for dehumidification.
Using remote occupancy input.
Using remote shutdown input.
Direct control of economizer damper via IAQ sensor.
Configuring factory options and accessories.
Setting control start-up delay.
Interpreting thermostat inputs.
Details on configurable inputs.
Unit operation modes and control types.
How the control determines overall unit demand.
Demand determination based on thermostat inputs.
Reading and configuring setpoints.
Adaptive anticipation control for space demand.
Determining dehumidification demand.
Setting the highest allowed fan speed.
Fan speed used in ventilation mode.
Fan speed used during heating mode.
Operating sub-modes within the cooling mode.
Stage timers and supply air trend for staging.
How compressor control works with staging.
Control of single or two-speed outdoor fans.
Additional HVAC modes for Humidi-MiZer units.
Control of reheat operation under different cooling demands.
Unit's heating operation process.
Operating sub-modes for heating.
Determining and requesting heating stages.
Stage timers and supply air trend for heating staging.
Energizing/de-energizing heat stage relays.
IGC initiates gas heat module start-up.
Economizer usage for ventilation and cooling.
Support for zoning systems via CCN or BACnet.
Connecting units to the CCN network.
Connecting units to a BACnet network.
Conditions causing complete unit stoppage.
Steps to restart the machine after a shutdown.
Menu locations for viewing and clearing alarms.
Troubleshooting communication failures.
Troubleshooting suction and discharge pressure transducers.
Description of the Main Base Board (MBB) and its I/O.
Controls direct spark ignition and monitors safety switches.
Devices that protect the unit's components.
Overcurrent and overtemperature protection for compressors.
Details on space temperature sensors.
Steps for connecting the unit to the CCN network.
Overview of Run Status menu items.
Cooling status menu items.
Heating status menu items.
Ventilation status menu items.
Alarm status menu items.
General unit configuration settings.
Configuring switch inputs.
Configuring analog inputs.
General unit configuration settings.
Economizer configuration settings.
Building network configuration menu.
CCN network configuration menu.
BACnet network configuration menu.
Setting temperature control basis.
Analog input configuration menu.
Cooling configuration settings.
Dehumidification configuration settings.
Heating configuration settings.
Indoor fan configuration settings.
Economizer configuration settings.
Power exhaust configurations.
Pre-start-up verification steps.
Step-by-step guide for Humidi-MiZer system start-up.
