Hisense mini split error code 10
Communication error between outdoor unit and compressor driver board.
- TypeFault
- SystemCommunication
- Can I fix it?Technician job
What 10 means on a Hisense
The outdoor control board and the compressor driver board stopped talking to each other.
On this platform, 10 is a fault: something has failed or is disconnected and needs diagnosis.
Common causes
- A loose connector between the boards.
- A failed outdoor control or driver board.
How to fix it yourself
Do the reset and the visual checks, but the underlying repair needs a technician with a meter and the service manual.
- Reset the system: switch the breaker (or the outdoor disconnect) off, wait a full five minutes so the boards fully discharge, then switch it back on and restart from the remote.
- With power off, open the outdoor service panel and reseat the connectors between the boards.
Switch off power at the breaker before opening either unit. Capacitors in the outdoor unit hold a charge for several minutes after power is cut.
When to call a technician
Board-level fault for a technician.
Which Hisense units show 10
This page applies to Hisense Hisense inverter single-zone and Hisense multi-zone units. Hisense's own documentation lists 10 as "Communication error between outdoor unit and compressor driver board", the same definition used across the Hisense 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 Hisense shows this code
Hisense inverter splits store the fault as a number. When the compressor has stopped on a fault, point the remote at the unit and press the SLEEP button 10 times within 10 seconds: the indoor display then shows the code (a second stored fault shows after four more presses). The Sleep, Timer and Running lamps also blink a pattern that matches the code. Newer models show the number on the display without the button sequence. Codes 1 to 21 are outdoor-unit faults and protections; 33 to 41 are indoor-unit faults. 0 means no fault is stored.
Other Hisense codes
Same part of the system as 10:
10 on other brands
The same characters do not always mean the same thing. Check the brand on your unit.
- Haier 10 Defrost (outdoor coil) temperature sensor fault (open or short circuit)
Questions people ask
Can I reset a Hisense 10 code myself?
Yes. Turn the system off at the breaker for five minutes, then restart it. If 10 comes back, the fault is real and needs the checks above.
Is it safe to keep running a Hisense showing 10?
The unit will usually refuse to run, or run with reduced output, until the fault is cleared. Repeated resets do not fix anything and can mask a problem that is getting worse.
What will a technician check for 10?
Board-level fault for a technician. Ask for the measurements, not just a parts quote.
Sources
- Hisense split-type air conditioner service manual, section 7-1 Error Code Table (North America inverter models)
Updated September 2026. Codes and definitions vary by model year. If your manual disagrees with this page, your manual wins. Send a correction.