L / MultiMate
™
Troubleshooting Guide
13-14-031D-20-01
–
Issue 1
October 2020
Page 1 of 4
INTRODUCTION
L dimmers, timers, switches and occupancy sensors include MultiMate
™
technology. These
devices have revolutionised multiple point control of lighting whilst using conventional wiring practices.
Even when not used for multi-way control, their superior compatibility with LED lighting loads makes them
the best wall plate lighting controls in the market.
MULTIMATE™ TECHNOLOGY
MultiMate™ is
the technology inside the
range of high quality L dimmers,
timers, switches and occupancy sensors. It
allows multi-way control of lighting loads
without the need for an expensive control
system. M
ultiMate™ technology is suitable
for both new and retrofit installations.
MultiMate™ technology enables multiple
L two-wire devices to be wired in
parallel when two-way, three-way or
multi-way dimming and switching is
required.
When connected in parallel, L
dimmers, timers, switches and occupancy
sensors allow dimming and switching of
connected lighting loads from multiple locations without any additional wiring. No strapper wires,
dedicated remote switch wiring or control bus is required.
HOW MULTIMATE
™
WORKS
MultiMate
™
products use a patented method of communicating with each other using the mains wiring. By
this means dimmers, timers, switches and occupancy sensors can communicate on/off, level, and settings
to other L products on the same circuit.
INSTALLATION
In normal cases, existing switches can be removed and replaced by MultiMate
™
dimmers, timers, switches
and occupancy sensors. Please refer to the installation instructions for common wiring methods used for 1-
way, 2-way, 3-way and other configurations.
TROUBLESHOOTING
Like all products, sometimes there can be problems caused by the electrical behaviour of the building
wiring, or that of the lighting loads. This document describes some cases found from real-world product
experience and their solutions.
Each of the following pages describes a problem and solution. In some case additional product(s) may be
required.
APPLICABLE PRODUCTS
Dimmers:
MMDM/PB & MMDM/RT
Timers:
MMTM/PB & MMTH/PB
Switches:
MMSW/PB
Occupancy Sensors:
MMSE/PR
Neutr
al
Neutr
al
Active
Active
Load
Load
Load
Active
Act
ive
Neu
tral
