4
4
en
en
5
6
7
5
14
4
4
5
6
5
• Remove the upper and
lower retaining screws
on the cover and remove it
carefully .
• Check the wall brackets
and tighten if necessary .
• Oil moving parts,
especially the sliding
brackets
.
⑥
• Check all electrical
connections to the control
box
.
⑦
• Put the unit cover back
again and tighten the
retaining screws .
• Reconnect mains .
④
⑤