Hussmann Freedom Line series Installation & Operation Manual page 94

AE8-1376 R5
8 Electronic Unit Controller Replacement
DANGER
WARNING
Electronic Unit Controller replacement must be
CAUTION
performed in accordance with safety instructions.
Disconnect and lockout power before servicing.
NOTICE
See Safety section for additional information.
8.1 Silver Electrical Box Applications
CAUTION
Figure 10 – Silver Electrical Box
1. Disconnect main power source.
2. Remove electrical box cover.
3. Remove Electronic Unit Controller assembly and
rotate it up 90 degrees. The assembly should now
slide and clip onto the top of the electrical box,
leaving the wiring harnesses exposed.
© 2015 Emerson Climate Technologies, Inc.
Application Engineering
B U L
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4. Disconnect three wiring harnesses from rear of
controller.
5. Verify replacement controller and existing controller
have the same part number (e.g., part number:
543-0133-00).
NOTE: A controller with a part number ending in -00
may be replaced with a controller with a part number
ending in -01 or -02 (See Section 8.5).
6. Insert replacement controller through the slot.
Ensure controller wiring schematic is pointing away
from the operator.
7. Connect three wiring harnesses to rear of controller.
Ensure the part number on the blue harness is
facing towards the operator.
8. Unclip Electronic Unit Controller assembly from the
top of the electrical box and slide it back into its
original position.
9. Install electrical box cover.
10. Connect main power source.
11. Set controller parameters to match values listed on
inside label (See Section 8.4).
T I N
May 2016