COSMO Wall Ovens Error Codes

5 error codes extracted from COSMO wall ovens service manuals. Each code includes its meaning and a summary fix step.

Error Codes5 codes

FO3

Problem with latch mechanism occurred.

Turn off power at the main power supply (fuse or breaker box), wait a few seconds and turn it back on again.

FO4

Problem with latch mechanism occurred.

Turn off power at the main power supply (fuse or breaker box), wait a few seconds and turn it back on again.

Other F--

General error (specific cause not detailed in manual).

Turn off power at the main power supply (fuse or breaker box), wait a few seconds and turn it back on again.

F03 or F04

A problem with latch mechanism occurred.

Turn off power at the main power supply (fuse or breaker box), wait a few seconds and turn it back on again.

Display flashes and beeps continuously

An error has occurred

Disconnect appliance from the power supply and call a qualified technician.

All Wall Ovens Error CodesAll COSMO Products

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