Troubleshooting Guide

Troubleshooting Poor Temperature Regulation
• This page lists problems that may affect the temperature performance of your LUX
thermostat with suggested resolutions.
• For more detailed information please refer to the instructions that came with your
thermostat.
Model
LV1 / LV11
Problem
Resolution
Heats more than 5 degrees past
its displayed set temperature
Verify that your thermostat's electrical connections
are clean and tight.
Verify that your units placement and mounting are
optimum per the installation section of its manual.
Slowly rotate the dial from full left to full right. Listen
carefully for a small click in both directions. These
two clicks should be near the approximate room
temperature location on the knob.
Replace unit. There are no user serviceable parts.
No heat when expected
Refer to wiring troubleshooting to verify that it is
wired according to the units proper wiring diagram.
Verify that all connections to your thermostat are
clean and tight.
If room temperature is greater than 90F the unit will
not close its switch and call for heat.
Rotate the dial to its highest setting. Heat should
operate immediately if the approximate room
temperature is less than around 90F degrees.
Heat Test
Slowly rotate the dial toward its lowest setting.
Listen carefully for a small click near room
temperature. When it is heard, the unit should
switch off heat immediately. Slowly rotate the dial
toward its higest setting. Listen carefully for a small
click near room temperature. When it is heard, the
unit should switch on heat immediately.
Advanced Troubleshooting
This thermostat is designed to switch hazardous
voltage. Qualified service personnel may use the
following information to troubleshoot the system.
The thermostat uses a single-pole snap-action
switch to control heating output. It should open
when the room is warmer than its set temperature,
close when cooler than its set temperature. At its
minimum setting, the switch should remain open at
any temperature within its operating range, unless
the room temperature is less than about 40-50F
degrees.