- Power-reset the appliance fully for at least 60 seconds.
- If the code is linked to setup, network, or configuration, check that the related feature was completed correctly.
- Retest once and record whether the same code returns immediately or only during a specific function.
Internal heat exchanger cover problem. On the Samsung DV90BBA245ABEU, this code relates to the heat pump dryer and should be interpreted together with how the appliance is behaving right now.
- The heat pump dryer displays NC2 instead of normal status information.
- The current cycle, function, or startup sequence may stop, pause, or behave differently than expected.
- The same code may return after a reset if the underlying issue is still present.
- The appliance control system detected an electronics, memory, configuration, or communication fault.
- A board, relay, connector, or software state is preventing normal operation.
- Note any recent power cuts, installation work, firmware changes, or connection attempts before the fault appeared.
- If the appliance depends on another module or paired component, check that the connection or configuration is still correct.
- Persistent electronics faults normally need service tools or replacement parts.
- Do not dismantle electronic modules or internal wiring unless you are qualified.
Arrange service if NC2 returns after a full reset or if the heat pump dryer behaves unpredictably, because electronics faults usually need proper diagnosis.
Can NC2 clear after a reset?
Sometimes a temporary glitch clears after one full reset, but a repeated return usually means the same underlying issue is still there.
Should I keep using the appliance if it works again briefly?
Only if the code stays away and the appliance behaves normally. If the same code comes back, stop and move to service or more targeted diagnosis.