VRF Quick Commissioning Guide
Outdoor Addressing, Auto Addressing & Capacity / Connection Check
Purpose: This quick guide covers the main commissioning steps required to set the outdoor refrigerant address, automatically address indoor units and complete the indoor unit capacity / connection check.
1. Set Outdoor Unit Refrigerant Address
Each VRF system must have a unique refrigerant circuit address.
| System | REF AD x10 | REF AD x1 |
|---|---|---|
| Single VRF system | 0 | 0 |
| First system on multi-system site | 0 | 1 |
| Second system on multi-system site | 0 | 2 |
Note: Factory setting is 00. For multiple systems, continue sequentially as required.
2. Indoor Unit Auto Addressing
Use the push buttons on the outdoor unit PCB.
PRESS MODE / EXIT
↓
F1
↓
PRESS SELECT
↓
F2
↓
PRESS SELECT
↓
F3
↓
PRESS ENTER
↓
11--
↓
PUSH AND HOLD ENTER
↓
run
Auto addressing can take up to 10 minutes.
Once complete, confirm the number of indoor units found and ensure there are no addressing errors.
Once complete, confirm the number of indoor units found and ensure there are no addressing errors.
3. Indoor Unit Capacity / Connection Check
Before starting: Ensure all indoor units are switched OFF.
PRESS MODE / EXIT
↓
F1
↓
PRESS SELECT
↓
F2
↓
PRESS SELECT
↓
F3
↓
PRESS ENTER
↓
00--
↓
PRESS SELECT
↓
12--
↓
PUSH AND HOLD ENTER
↓
run
Check Indoor Unit Count
U 8
Example: 8 indoor units detected
Check Capacity Ratio
PRESS SELECT
C120
Example: 120% connected indoor unit capacity
Confirm Result
PRESS ENTER
PASS
If the display shows Err, press ENTER to view the error detail.
| Error | Description |
|---|---|
| 22.1 | Connecting indoor units capacity error |
| 24.2 | Connecting number of indoor unit error |
| 26.1 | Dual / duplicate address exists |
Quick Reference
Auto Addressing: F3 → 11 → Hold ENTER → run
Capacity Check: F3 → 12 → Hold ENTER → run
Confirm: Indoor Count → Capacity Ratio → PASS