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Check DC power fuses

WARNING! Elecrocution hazard
Before servicing or changing the fuses, switch off the device, shut the gas supply and disconnect DC (12 V) supply. TwinBoost 6000H, TwinBoost 8000H only: Disconnect the AC (230 V) supply.

Replace broken DC fuses according to the figure below. Only use fuses with the same value.

Possible cause: Fuse blown

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