Replace The Electronic Control Board- Kuhl Q; Replace The User Interface - Friedrich Kuhl KCS12B10A Service Manual

Replace the Electronic Control Board- Kuhl Q

ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Failure to do so could result in serious injury or
death.
1. Unplug the unit
2. Remove the front Cover (Refer to Routine Maintenance, Figure 402)
3. Remove the unit from the
4. Remove top cover (8 screws). Refer to figure 715.
NOTE: Be careful not to break styrofoam during removal process.
Remove
8 screws
Figure 715 (Remove Top Cover)
4. Remove the discharge sensor and grommet.(Take note of the
routing for reinstallation).
5. If necessary, cut wire ties and remove one (1) screw electronic
holder to create slack in wiring. Refer to Figure 715.
Remove
Screw
Figure 716 (Open Control Box)
75
COMPONENTS TESTING
WARNING
sleeve.(Refer to Figure 504)
6. Interchange wires from old circuit board to new circuit board
7. Remove the four (4) circuit Board pins using needle nose pliers or
other suitable tool.
7. Install the new control board using four(4) new circuit board pins.
8. Reinstall the control board panel, secure wiring as required.
9. Reinstall the discharge sensor and grommet.
10. Slide chassis in.
11. Install the Front Cover (Refer to Routine Maintenance, Figure 402)
12. Plug in the unit and test the unit for proper operation. Refer to
operation section.

Replace the User Interface

1. Unplug the Unit.
2. Remove the front Cover (Refer to Routine Maintenance, Figure 402)
3. Remove the 4 corner screws from the rear of the user interface.
Refer to Figure 717.
Remove
4 screws
Inspect
Ribbon
Cable
4. Inspect ribbon cable for obvious signs of damage.
5. If ribbon cable is damaged, or damage is suspected, disconnect
cable from User Interface and Control Board.
6. Paying careful attention to the ribbon cable routing, remove the old
cable and replace with a new ribbon cable.
7. Connect ribbon cable to the power board and user interface as
required.
8. Install new UI using the 4 screws.
9. Plug in the unit and verify control operation.(Refer to Operation
Section)
Figure 717