Carrier Error Code 1: Normal operation – 1 flash (AC)
Carrier error code 1 on a air conditioner means: Normal operation - 1 flash. It is also called Carrier diagnostic code 1.
Homeowner? What Carrier code 1 means for you
Usually minor Your air conditioner is reporting: Normal operation - 1 flash. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
- Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
- Keep about 2 feet around the outdoor unit clear of leaves, grass and debris.
- If you see ice on the pipes or the indoor coil, turn the system off and run only the fan for a few hours, then call a technician.
- Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Carrier error code 1 mean?
The amber STATUS LED gives one flash and a pause, repeating. This is a normal running indication, not a fault: on the 25VNA8/24VNA9 with an Infinity control it means variable capacity operation, and with a 2-stage thermostat it means low capacity. On the 24ANB/25HNB it means low stage cooling or heating, and on the single-stage communicating heat pump it means normal cooling or heating.
Applies to: Carrier Infinity 25VNA8/24VNA9 variable speed, 24ANB/25HNB two-stage and single-stage communicating outdoor units
Carrier models that use code 1
24ANB12424ANB13624ANB14824ANB16024ANB72424ANB73624ANB74824ANB76024VNA924VNA91324VNA92424VNA92524VNA93624VNA93724VNA94824VNA94924VNA960
Other Carrier AC codes
All Carrier Air Conditioner error codes →
Carrier code 1: homeowner questions
What does Carrier code 1 mean?
Normal operation - 1 flash. The amber STATUS LED gives one flash and a pause, repeating. This is a normal running indication, not a fault: on the 25VNA8/24VNA9 with an Infinity control it means variable capacity operation, and with a 2-stage thermostat it means low…
Is it safe to keep using my air conditioner with code 1?
Usually yes. Code 1 is normally minor, but if it keeps coming back have it checked.
Can I reset Carrier code 1 myself?
You can try one reset (power off for 30 seconds, then on). If Carrier code 1 comes back, the cause is still there and a licensed technician should check it.
Who can fix Carrier code 1 near me?
Aurora Star Tech Inc. repairs Carrier air conditioners in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: AC Running But Not Cooling: What to Check
Troubleshooting guides
- Not cooling All brands · Air Conditioner
- Amber STATUS or green COMM light not on Carrier · Air Conditioner
- Compressor will not run - winding and electrical checks - Carrier split systems Carrier · Air Conditioner
- Delay before the compressor restarts Carrier · Air Conditioner
- Hissing from the outdoor unit after it shuts off Carrier · Air Conditioner
- Outdoor unit unresponsive after several faults Carrier · Air Conditioner
- Recall the active status code on the outdoor board (25VNA8/24VNA9) Carrier · Air Conditioner
- Refrigerant charging mode on Infinity control (25VNA8/24VNA9) Carrier · Air Conditioner
- Superheat too high or too low on TXV system - Carrier split systems Carrier · Air Conditioner
- Two-stage unit not changing stages - Carrier 24ANB/25HNB/25HCB6 Carrier · Air Conditioner
Source: Carrier 25VNA8/24VNA9 service manual, Table 6 Fault Code Actions (status rows), p.15-16; Carrier residential A/C and heat pump service manual 24-25, Table 14 Status Codes (single-stage communicating HP), p.50-51; Carrier residential A/C and heat pump service manual 24-25, Table 18 Troubleshooting (2-stage 24ANB/25HNB), p.60-61. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.