Lightstat TME series User Manual

Lightstat TME series

28 pages

To Next Page

To Next Page

Page #1 background image

Loading...

Page #1 background image

INSTALLATION & OPERATION

MANUAL

Model TME-____________________*

* Balance of model number is determined by

customer specied limits and Setbacks.

AUTOMATIC SETBACK THERMOSTAT

LIGHT SENSING OR CONTACT CLOSURE

FOR LOW VOLTAGE (24VAC) SYSTEMS ONLY

REQUIRES A COMMON WIRE

Manufactured by:

LIGHTSTAT INC.

BARKHAMSTED, CT

(800)292-2444

www.lightstat.com

Table of Contents

Questions and Answers:

C
Cassandra ColonAug 19, 2025
What to do if Lightstat TME has no heating or cooling?
- D
  Denise Elliott MDAug 19, 2025
  If your Lightstat thermostat isn't heating or cooling, there are several possible causes. First, check if the Lightstat TME is powered off and press the System ON/OFF button. Also, ensure that power is reaching the equipment and the Lightstat TME by checking switches, circuit breakers, fuses, the gas valve, and the pilot light. Verify that the Lightstat TME isn't in Night Setback. Finally, check the display to verify that the Lightstat TME is set at its Cooling Minimum or Heating Maximum.
K
Karen GarciaAug 21, 2025
Why is my Lightstat Thermostat fan blowing cold air during heating?
- S
  Shawn ButlerAug 21, 2025
  If your Lightstat thermostat fan is blowing cold air during the heating season, it might be due to the Fan ON/AUTO setting. Move the Fan to the Auto position by pressing the FAN ON/AUTO button.

Lightstat TME series Specifications

General

Brand	Lightstat
Model	TME series
Category	Thermostat
Language	English

Summary

HVAC Wiring and Connections

Connecting Thermostat Outputs

Details on wiring the R, C, O/B, Y1, Y2, W1, W2, and G terminals to HVAC equipment.

Remote Room Sensor Installation

Supply Air Sensor Installation

Switch #1: Heat Pump/Conventional Configuration

Setting Heat Pump Warm-Up Cycles

Guide for setting Switch #1 for heat pump warm-up or conventional system operation.

Switch #2: Compressor Time Delay Settings

Configuring Compressor Protection Delays

How to set Switch #2 to manage compressor time delays, minimum run, and off times.

Switch #3: O/B Output Control

Setting O/B for Heating or Cooling Calls

Instructions for setting Switch #3 to control the O/B output for heating or cooling calls.

Switch #4: Gas/Electric Heat Fan Control

Configuring Heat Fan Operation

Switch #5: Remote Room Sensor Enable

Enabling Remote Sensor Input

Pre-Conditioning Countdown Setup

Setting the Darkness Hours Dial

Initial Thermostat Power-Up

Understanding the Power-Up Sequence

Adjusting Light-Based Setback

Fine-Tuning Light Sensitivity

Thermostat Control Features

Fan Modes and Time Delay Management

Setting Temperature Parameters

Configuring Heat and Cool Limits

Guide to setting heating and cooling setpoints, including maximum heat and minimum cool limits.

Interpreting System Output Status

Understanding Output Indicators

Manual System Testing Procedures

Forcing HVAC Operation for Checks

Visual Alarm for Equipment Malfunctions

Responding to RTU Alarm Signals

Troubleshooting Common HVAC Issues

Resolving Basic Operation Problems

A table detailing common symptoms, their causes, and recommended solutions for thermostat operation.

Advanced Troubleshooting and Diagnostics

Diagnosing Display and Sensor Errors

Troubleshooting specific display messages like "00" or "99" for sensors and power issues.

Related product manuals

Lightstat TG Series