Samsung NQ70M9770 Repair & Common Issues

Described on samsung.com as 30″ flex duo™ chef collection microwave combination wall oven, the NQ70M9770 is a 30-inch microwave combination wall oven. The upper cavity of the NQ70M9770 is a microwave with its own magnetron, high-voltage circuit and door switches, sharing a cabinet and a control with the oven below but not a heating system, so the oven half usually stays usable while the microwave half waits for a part.

On the NQ70M9770 a door that stays locked after self-clean is given time to cool fully before anything is done, since the lock is meant to hold while the cavity is hot; if it remains locked once cool, the lock motor and its switch are tested rather than the door being forced.

Key Features

30-inch microwave combination wall oven
Flex Duo divider that splits the cavity in two

Most Common Issues on This Model

01

Display unresponsive after a power cut

02

Microwave section running with no heat

03

C-F0 communication code between boards

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FAQ

Samsung NQ70M9770 FAQ

Wait until the NQ70M9770 is fully cool - the lock is designed to hold while the cavity is hot. Once the NQ70M9770 is cool and still locked, switching its breaker off for a few minutes and back on lets the control re-check the lock on many models. If the NQ70M9770 remains locked after that, leave the door alone rather than prying it and have the lock motor and its switch tested.

Usually yes, as long as the oven side heats and locks normally and there is no smell of overheating from the microwave section. The two halves of the NQ70M9770 share a cabinet and a control but not their heating systems. Do not open the microwave section yourself: its high-voltage capacitor can hold a dangerous charge with the power off.