Service Call 501-584
D146/D147/D148/D149/D150 5-68 SM
SC No. Level Error Name/Error Condition/Major Cause/Solution
SC544-01 A Fusing central thermopile high temperature detection
(hardware)
In the event of an error
§ Triac defective (short-circuit)
§ Engine controller defective
§ Heating central thermopile defective
§ Fusing control software: out of control
§ If the triac is defective, replace the AC power supply board
§ If necessary, replace the BCU or the heating central
thermopile
SC No. Level Error Name/Error Condition/Major Cause/Solution
SC544-02 A Fusing central NC sensor high temperature detection
(hardware)
In the event of an error
§ Triac defective (short-circuit)
§ Engine controller defective
§ Heating central thermopile defective
§ Fusing control software: out of control
§ Attach the new fusing unit, then run SP-5-810-002
§ If the triac is defective, replace the AC power supply board
§ If necessary, replace the BCU or the Fusing central NC
sensor
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