What C8 Means
C8 is a detergent dispenser problem — the control board isn't confirming the dispenser door opened and released detergent when commanded.
Common Causes of C8
- Dispenser mechanism gummed up with detergent residue
- Dispenser door physically obstructed by a dish or utensil
- Dispenser solenoid/actuator has failed
🔧 One Safe Check You Can Try
Check that the dispenser cup isn't gummed up with old detergent residue, and that nothing (a tall item, a misloaded rack) is blocking the dispenser door from swinging open.
⚠ Why You Shouldn't Go Further Than That
- None — checking for a gummed-up dispenser or a blocked door is a safe, owner-level check with the unit powered off.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.
Technical Reference
- Code
- C8
- Appliance
- Monogram dishwasher
- Maker documentation
- Monogram owner manuals and use & care guides
- Checked
- September 2026
Code meanings can change between control generations. Before acting on a code, match the full model number on your appliance's rating label against the manual for that model. We are an independent repair service, not affiliated with Haier US Appliance Solutions, Inc.