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TUBE HEATER TROUBLESHOOTING GUIDE
24V plug) and ground (a screw on the burner box) 24V? Is the circuit board sending 120V to the fan? Find the source of the electrical problem between panel & heater. YES YES NO YES Is the fan obstructed? Is the inlet or the outlet of the unit obstructed? I.e. ice, birds nest, dirt, etc. Remove obstruction. YES Check for loose wiring or ...
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