Carrier mini split code LL
Remote or wired controller locked.
- TypeStatus, not a fault
- SystemDisplay
- Can I fix it?Usually a homeowner fix
- Applies toindoor display, four-character codes (newer units)
What LL means on a Carrier
The controller lock is on: button presses are ignored until it is turned off. Not a fault.
On this platform, LL is a status, not a fault: the unit is telling you what it is doing; nothing is wrong.
What to do
You can almost always clear this yourself with the steps below.
- See your remote's manual for the lock combination; on many Midea-built remotes it is holding the up and down arrows together.
When to call a technician
This is not a fault. No technician is needed unless it will not clear.
Which Carrier units show LL
This page applies to Carrier Comfort 38MHRB / 40MHHQ, Comfort 38MGR / 40MGQ, Performance 40MAQ / 38MAQ, Infinity 40MPHA / 38MPRA and Carrier multi-zone units on the indoor display, four-character codes (newer units). Carrier's own documentation lists LL as "Remote or wired controller locked", the same definition used across the Midea platform (four-character codes) it is built on. If your unit shows a code with a different shape (for example a four-character code, or a plain number), it is from a different table; use the lookup with your exact code.
Where Carrier shows this code
indoor display, four-character codes (newer units): The display shows a two-letter prefix and a two-character suffix, either together (EH60) or alternating (EH, then 60). Write both parts down; the suffix is what identifies the fault. EH and EL are indoor-side faults, EC is an outdoor-side fault, and PC is an outdoor protection: the unit stopped itself to prevent damage.
Other Carrier codes
Same part of the system as LL:
LL on other brands
The same characters do not always mean the same thing. Check the brand on your unit.
- Pioneer LL Remote or wired controller locked
Questions people ask
Is LL on a Carrier mini split an error?
No. LL is a status message: remote or wired controller locked. The controller lock is on: button presses are ignored until it is turned off.
Do I need a technician for Carrier LL?
You can almost always clear this yourself with the steps below. This is not a fault. No technician is needed unless it will not clear.
Sources
- Carrier 38MHRB Single Zone Ductless Service Manual SG-38MHRB-01 (Diagnosis and Solution section)
- Carrier 40MAQ / 38MAQ High-Wall Ductless Service Manual 40MAQ-01SM (Diagnosis and Solution section)
- Carrier 40MPHA / 38MPRA Infinity High Wall Ductless Service Manual (error code table)
Updated September 2026. Codes and definitions vary by model year. If your manual disagrees with this page, your manual wins. Send a correction.