Error code
Midea / Water heater
CB
Bypass-water-valve fault; the code is after-sales-mode-only.
What it means
Bypass-water-valve fault; the code is after-sales-mode-only.
This explanation is shared only by models whose manufacturer documents the same code, meaning, and guidance.
Manufacturer guidance
- Give a CB service-history entry to a qualified technician for valve diagnosis.
Manufacturer source
Models documented with this signal
Select your exact model below to open its manufacturer source. Manual editions and model revisions can differ.
If there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.