Fault Code Lookup

HVAC Sales Master
dF
Defrost mode
This code typically points to

    Next checks to confirm
    1. No action — normal defrost cycle status

    Escalation
    None — this is a status display, not a service fault.
    Reset behavior
    Status only; clears when defrost ends.
    Informational
    No action needed
    Need deeper detail?
    Retrieve the subcode for this platform:
    1. Connect the IDS system in EasyAir App
    2. Use the contractor view to monitor heat pump health
    3. Review real-time alerts, fault codes, and checkpoint values
    4. For on-site work, use Bluetooth-enabled access to system data and historical fault codes
    5. Calculate superheat/subcool within the app for diagnostic verification
    6. Bluetooth access is retained on-site even without continued remote subscription
    Tool required: Bosch EasyAir App
    Source
    Bosch IDS 2.0 service documentation