🔴 Hisense VRF What Error 31 Means/❌ Wrong capacity setting/⚖️ Indoor units over-connected/Incorrect

🔴 Hisense VRF What Error 31 Means/❌ Wrong capacity setting/⚖️ Indoor units over-connected/Incorrect
Hisense VRF AC – Error Code 31 is not a simple sensor fault—it’s a system configuration issue.
🔴 What Error 31 Means
Error 31 = Incorrect capacity setting / mismatch between indoor and outdoor units �
acerrorcode.com +1
In simple terms:
👉 The system thinks the total indoor unit capacity does not match the outdoor unit capacity.
✅ Top 5 Reasons for Error 31
1. ❌ Wrong capacity setting (most common)
Indoor or outdoor unit capacity codes set incorrectly during installation
Example: Outdoor unit = 20 HP, but indoor total exceeds or is too low
👉 This is the #1 cause
2. ⚖️ Indoor units over-connected or under-connected
Too many indoor units connected to one outdoor system
Or total capacity is below minimum requirement
👉 VRF systems need a specific capacity ratio range
3. 🧠 Incorrect DIP switch / software configuration
Capacity settings in PCB (main board) are wrong
Wrong model selection during commissioning
4. 🔌 Communication / addressing issues
Indoor units not properly addressed
Some units not recognized by outdoor system
👉 System calculates wrong total capacity due to missing units
5. 🔄 Mixed or incompatible units
Different models or series not matching
Example: Old unit + new VRF system combination
👉 Leads to calculation mismatch
🔧 Quick Troubleshooting Steps
Check total indoor capacity vs outdoor capacity
Verify unit addressing (no duplication / missing units)
Confirm DIP switch or software settings
Ensure all indoor units are detected in system
Restart system after corrections
⚠️ Important
This error is not a simple repair issue (like cleaning or gas refill).
It usually requires:
System reconfiguration
Or commissioning check by VRF technician
If you want, tell me:
Your outdoor unit model
Number & type of indoor units
I can help you calculate whether your system capacity is correct 👍

Видео 🔴 Hisense VRF What Error 31 Means/❌ Wrong capacity setting/⚖️ Indoor units over-connected/Incorrect канала finac Air-conditioning