User Guide

ManualsBrandsLux ManualsHeating, Ventilation, and Air ConditioningDouble Pole 4-Wire Line Voltage Mechanical Thermostat

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

LV2 / LV21

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. NOTE:

there will be an additional click heard right near the

OFF position on the dial, and the above clicks that

are mentioned should be in addition to the click

near the OFF position.

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.

NOTE: Only the L1-IN/OUT pole is broken during

normal temperature control. The L2-IN/OUT pole

is a pass-through and is always live unless the

Summary of content (3 pages)

PAGE 1
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 LV2 / LV21 Problem Resolution 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.
PAGE 2
thermostat's set temperature knob is in the OFF position (which will break both L1 and L2 poles). The thermostat uses two snap-action switchs to control heating output. Heating should cease when the room is warmer than its set temperature, and be on when cooler than its set temperature. At its minimum dial position (labeled OFF), both L1 and L2 poles should remain open at any temperature. For further assistance: Contact your HVAC service company or our Technical Assistance Line if not resolved.
PAGE 3
used and will be a potential fire hazard; these are for use with copper house wiring only. Special CO/ALR wire connectors made spefically for aluminum must be used; please seek the assistance from a competent licensed electrician for more information. For further assistance: Contact your HVAC service company or our Technical Assistance Line if not resolved.