138
Removing the HPMU electronics module
Remove programming unit: See previous chapter.
Fig. 90
After replacing the HPMU electronics module, repeat
the commissioning procedure: See chapter "Commis-
sioning".
Removing the EHCU electronics module
Danger
Contact with live components can lead to seri-
ous injury from electric current. Some compo-
nents on PCBs remain live even after the power
supply has been switched off.
■
Never touch electrical terminal areas.
■
When working on the indoor or outdoor unit,
isolate the system from the power supply, e.g.
at a separate fuse or a main switch.
Note
The indoor and outdoor unit can be fused sep-
arately.
Check that it is no longer live. Safeguard
against unauthorised reconnection.
■
Prior to working on the appliance, wait at
least 4 min until the voltage has completely
dropped out.
Remove programming unit: See chapter "Removing
the HMI programming unit".
Fold open the HPMU electronics module if required:
See Fig. 90.
Indoor unit maintenance
Removing the programming unit and electronics… (cont.)
6222080
Maintenance
To Next Page
Loading...
