(1) the control circuit is interrupted
(2) Gas transmission is interrupted.
(3) Control failure
(4) Contactor does not act.
(5) Thermal relay is damaged.
(1) Find the disconnection point, contact or disconnect the regulator or monitor.
(2) Open the ball valve, and notify the gas management organization when the gas quantity is insufficient for a long time.
(3) Repair and replacement of dis-function parts.
(4) Manual reset inspection
(5) Replace the thermal relay
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