Device Led Feedback Messages; Flash Codes - HomeMatic HM-LC-Sw1-FM Installation And Operating Manual

If the device is in teach mode, hold the (first)
channel button pressed down for at least 4 seconds.
The actuator reset is indicated by the device LED
flashing quickly.

10 Device LED feedback messages

10.1 Flash codes

Different actuator states are indicated by the
channel LED/channel LEDs flashing:
Slow flashing
Fast flashing
One long, x-short
(depends on the type
of error)
Note: Only one LED exists for both channels
for radio-controlled switch actuator 2
channel. The respective flash code appears as soon
as a channel is in the corresponding status.
42
Teach mode
Reset
Error