Carrier Error Code 1 long: Capacity limited – one long flash (Heat Pump)
Carrier error code 1 long on a heat pump means: Capacity limited - one long flash. It is also called Carrier diagnostic code 1 long.
Homeowner? What Carrier code 1 long means for you
Usually minor Your heat pump is reporting: Capacity limited - one long 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.
- In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
- 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 long mean?
The amber STATUS LED gives one 2-second flash followed by a longer 1-second off pause. On the Infinity 25VNA8/24VNA9 communicating system this shows variable capacity is being limited (speed cutback). It is an operating state rather than a fault.
Applies to: Carrier Infinity 25VNA8/24VNA9 variable speed units
Carrier models that use code 1 long
25VNA81325VNA82425VNA82525VNA83625VNA83725VNA84825VNA860
Other Carrier Heat Pump codes
All Carrier Heat Pump error codes →
Carrier code 1 long: homeowner questions
What does Carrier code 1 long mean?
Capacity limited - one long flash. The amber STATUS LED gives one 2-second flash followed by a longer 1-second off pause. On the Infinity 25VNA8/24VNA9 communicating system this shows variable capacity is being limited (speed cutback). It is an operating state rather than…
Is it safe to keep using my heat pump with code 1 long?
Usually yes. Code 1 long is normally minor, but if it keeps coming back have it checked.
Can I reset Carrier code 1 long myself?
You can try one reset (power off for 30 seconds, then on). If Carrier code 1 long comes back, the cause is still there and a licensed technician should check it.
Who can fix Carrier code 1 long near me?
Aurora Star Tech Inc. repairs Carrier heat pumps 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 · Heat Pump Not Heating or Blowing Cold Air
Troubleshooting guides
- Amber STATUS or green COMM light not on Carrier · Heat Pump
- Delay before the compressor restarts Carrier · Heat Pump
- Force a defrost cycle by shorting the defrost pins Carrier · Heat Pump
- Heat pump will not defrost - HK32EA defrost board Carrier · Heat Pump
- Noisy compressor or loud defrost shift - Carrier split systems Carrier · Heat Pump
- Outdoor ECM fan not running - Carrier 25HNB9/24ANB1 Carrier · Heat Pump
- Outdoor unit unresponsive after several faults Carrier · Heat Pump
- Outdoor unit will not run - HK32EA defrost board heat pumps Carrier · Heat Pump
- Recall the active status code on the outdoor board (25VNA8/24VNA9) Carrier · Heat Pump
- Refrigerant charging mode on Infinity control (25VNA8/24VNA9) Carrier · Heat Pump
Source: Carrier 25VNA8/24VNA9 service manual, Table 6, p.15. 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.