On Arçelik air conditioners, error code CH51 means: Indoor and outdoor units don't match. Switch the unit off and try a power reset. If the code comes back, have it checked by a technician before using it again.
Can I keep using the air conditioner?
Switch the unit off and try a power reset. If the code comes back, have it checked by a technician before using it again.
Common causes
- Installation fault: wiring, unit combination or pipework
How to fix it
- If it appeared right after installation, ask your installer to check the wiring and setup
- If the code returns, contact an authorised AC technician; don't open the unit yourself
Frequently asked questions
What does Arçelik error CH51 mean?
On Arçelik air conditioners, error code CH51 means: Indoor and outdoor units don't match.
How do I fix Arçelik error CH51?
Start with these steps: If it appeared right after installation, ask your installer to check the wiring and setup; If the code returns, contact an authorised AC technician; don't open the unit yourself.
Can I keep using the air conditioner with error CH51?
Severity: Medium. Switch the unit off and try a power reset. If the code comes back, have it checked by a technician before using it again.