SERVICE AND SPARES
Greenstar Ri Compact 6 720 646 610 (2013/12)
45
6.8.16 ACCESS TO BOILER CONTROL COMPONENTS
▶ Push in the catches and remove the bottom panel.
1. Release the two screws securing the control panel.
2. Pull down to release the two catches.
3. Pull the bottom of the control panel forward.
4. Swivel the control panel down.
Fig. 100 Removing the control panel
1. Release the screws securing the access cover.
2. Lift the cover.
3. Pull the cover forward to remove.
Fig. 101 Removing the installer access cover
1. Unplug the cables.
2. Pinch in the sides of the connector block to release.
3. Lift the complete connector block out.
Fig. 102 Cable removal
1. Release the screws retaining the cover.
2. Lift the cover to remove.
Fig. 103 Control panel detail
[1]
Mains voltage cable outlet
[2]
Fuse holder
[3]
HCM - Heating Control Module
[4]
Spare fuse
[5]
Low voltage cable outlet
[6]
Low voltage connectors
[7]
Diagnostic port (for Worcester Bosch service engineers only)
[8]
Mains voltage and earth connectors
PCB FUSE
The fuse and holder (2) are located next to the high voltage connectors
and the spare fuse (7) is located on the back of the installer access
cover.
To remove the fuse:
▶ Pull the fuse holder (2) up.
▶ Replace the fuse and re-insert the fuse holder.
6.8.17 REPLACING THE HEATING CONTROL MODULE (HCM)
▶ Press down on the retaining clip on the module and slide out from the
cover.
▶ Disconnect the HCM from the connector.
▶ Connect the new HCM and slide back into the retainer until the module
is secure.
6.8.18 REPLACING THE CONTROL UNIT
▶ Reconnect the boiler cable edge connectors to the board.
▶ Reconnect the cables removed earlier in to the 230V connector block.
▶ Replace the covers removed earlier.
▶ Hold the control panel at approximately 60° to the horizontal and re-
engage the panel with the hinges.
▶ Re-attach the support strap to the new control unit.
1.
2.
3.
4.
6720646610-45.1W
o
5.
6720646610-31.2W
o
1.
2.
3.
6720646610-46.2W
o
2.
2.
3.
1.
The control unit is supplied complete in the plastic
housing. The complete unit must be replaced.
6720646610-47.1W
o
2.
1.
1
5
8
4
6
3
2
7