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A710 flame detector after electrify, light is not bright

The cause of the problem 1: motherboard 6 pin plug wiring loose; Methods: retightened plugs.
The cause of the problem 2: the mainboard program cannot be started; Processing method: burning program again.
The cause of the problem 3: circuit board fault; Processing method: contact with wing rapid after-sales service department, returned to the factory maintenance.

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