Service documentation series KB/KBF
BB / JTU 25.06.2000
Trouble Shooting KB / Cooling System
Assumption: No Cooling
Do Controller (N1) emits a Signal to the Solid State Relay (K3) ?
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YES Check the Solid State Relay (K3)
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NO Change the Controller (N1)
Does the Solid State Relay (K3)
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YES Check the voltage at the Terminal-Block
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NO Solid State Relay (K3) defect
Is there a current at the Compressor ?
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YES Compressor is defect, change the Compressor
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NO Check the cabling
Trouble Shooting KBF / Cooling System
Assumption: No Cooling
Does the Controller (N1) emits a Signal?
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YES Check the Compressor and Solenoid Valve
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NO Controller (N1) is defect
Does the Compressor work?
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YES Possible that there is no refrigerant inside the chamber
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NO Check the voltage at the Terminal-Block
Is there a voltage at the Compressor?
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YES Compressor is defect
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NO Check the cabling