ACiQ / Multi-Zone Extreme Series
ACiQ MODE CONFLICT status display
On a multi-zone system, one room calling for heating while another calls for cooling can stop one head and show --/---- or a conflict status. That is a control conflict, not a failed part.
- Urgency
- informational
- Verified
- Jul 30, 2026
- Fix path
- Not an error
What it means
On a multi-zone system, one room calling for heating while another calls for cooling can stop one head and show --/---- or a conflict status. That is a control conflict, not a failed part.
Urgency
Not an error
This is a normal status indication, not an error, unless comfort is poor, water is present, or the indication never clears.
Likely causes
Homeowner fix
Set all connected indoor heads to the same mode, then wait several minutes. Expected result: the conflict clears and zones resume in one shared mode.
When to call a pro
No technician is needed for this status by itself. Call for service only if comfort is poor, water is present, or the indication never clears after conditions change.
Repair vs replace
This is a normal operating status, not a repair-or-replace decision.
Your ACiQ model
Multi-Zone Extreme Series model pages in the ACiQ catalog help compare this repair path with current replacement options.
- ACiQ Multi-Zone Extreme Series 2-Zone 18,000 BTU R-454B 208/230V (ACIQ-18Z-HH-M3C)
Multi-Zone Extreme Series
- ACiQ Multi-Zone Extreme Series 3-Zone 27,000 BTU R-454B 208/230V (ACIQ-27Z-HH-M4C)
Multi-Zone Extreme Series
- ACiQ Multi-Zone Extreme Series 4-Zone 36,000 BTU R-454B 208/230V (ACIQ-36Z-HH-M5C)
Multi-Zone Extreme Series
- ACiQ Multi-Zone Extreme Series 5-Zone 48,000 BTU R-454B 208/230V (ACIQ-48Z-HH-M6C)
Multi-Zone Extreme Series
For your technician
Technician note: status display only; confirm normal operation before using error-code diagnostics. Page context: ACiQ maps this display to the Multi-Zone Extreme Series line; source: ACiQ Multi-Zone Service Manual and shared Midea D5CMRA Table 20 display reference; display convention: match the letter M, letter O, letter D, letter E, letter C, letter O, letter N, letter F, letter L, letter I, letter C, and letter T marker exactly before comparing neighboring codes.
Which systems show it
Multi-Zone Extreme Series
Sold under more than one brand
Shared with Midea. ACiQ and Midea document this code from the same manufacturer source, so MODE CONFLICT means the same thing on either badge and the steps above apply.
Open Midea MODE CONFLICTRelated troubleshooting
Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.
Related codes
Source
- Document
- ACiQ Multi-Zone Service Manual and shared Midea D5CMRA Table 20 display reference