Blown Fuse Conditions
Power Supply Unit
Fuse
Rating
Symptom when turning on the main switch
120V-127V 220V-240V
FU1 10A/250V 10A/250V • 24V power to the BICU not supplied.
FU2 10A/250V 10A/250V • 24V power to the BICU not supplied.
FU3 5A/250V 5A/250V
• 5V power to the BICU not supplied.
•
24VS1 power to the BICU not supplied.
FU101
15A/250V 8A/250V Fusing SC occurs.
FU102 10A/250V 6.3A/250V No response
FU103 2A/250V 2A/250V
Power to all the anti-condensation heaters not
supplied.
FU104 10A/250V 10A/250V • 24V power to the BICU not supplied
FU301 3.15A/250V 3.15A/250V
• 5V power to the BICU not supplied
• 24VS1 power to the BICU not supplied
• For continued protection against risk of fire, replace only with same type and rating of fuse.
6. Troubleshooting
726
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