IDEAL icos system HE15 Installation And Servicing page 47

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67 CONTROL BOX REPLACEMENT
1. Refer to Frame 55.
2. Remove the boiler front and bottom panels. Refer to
Frames 47 & 48.
3. Swing the control panel down into the servicing
position. Refer to Frame 49.
4. Unplug the user control electrical lead and low voltage
lead from the control box and remove the control. Refer
to diagram A.
5. Return the control box to the working position and
secure with the clamp. Unscrew the mounting bracket
screws to remove the bracket. Refer to diagram B.
6. Release the clamp and carefully remove the control box
from the hinge arms. Refer to diagram C.
7. Unplug all the electrical wiring from the control box and
remove.
8. Transfer mounting bracket and hinge screws to the new
control box.
68 MAINS SWITCH REPLACEMENT
1. Refer to Frame 55.
2. Remove boiler front and bottom panels. Refer to
Frames 47 & 48.
3. Remove the 2 screws and allow the user control to
lower.
4. Push out the mains switch from the rear, as shown.
User control
icos system -
Installation and Servicing
3
SERVICING
9. Reassemble in reverse order, ensuring that the control
box is located correctly in the housing before reconnecting
the electrical wiring.
10. Check operation of the boiler. Refer to Frame 55.
5. Fit the new switch, ensuring that the electrical leads are
replaced on the correct terminals (refer to Frame 40) and the
key on the switch is correctly aligned with the slot in the plastic
moulding.
6. Reassemble in reverse order.
7. Check operation of the boiler. Refer to Frame 55.
Display
unit
47