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TH146-N-U/U

Low volt non-programmable 3 heat/cool conventional and 4H/2C heat pump thermostat

Per local restrictions, item is not available for sale in the state of Colorado as of January 1, 2026

This product is obsolete, but it can be purchased while supplies last.

This product is available in Canada only.

Product Info
Literature
Accessories & Replacement Parts

Overview

This thermostat features a 2-wire user console connection, idea for retrofits. This TH164-N-U includes a non-programmable console, a control module, and an outdoor temperature sensor

Features

Installer mode bypasses compressor lockout delay for quicker installations
Removable connector strip simplifies wiring
Selectable cycles (2 to 6 per hour) optimize system to heating/cooling application
Control module for equipment connections can be installed near furnace/air handler, only 2 wires required for console connection
Automatic changeover between heating and cooling
Backlit console display shows indoor and outdoor temperature, or indoor temperature and humidity level
Complete defrost sequence protection (requires AC146-410 air duct temperature sensor)
Keypad lock for console prevents tampering

Product Specifications

Application: Heat/Cool or Heat Pump with Auxiliary Heat
Dimensions (in.): User console: 3.1 in. X 3.1 in. X 1 in.; Control module: 3 in. X 4.3 in. X 1 in.
Dimensions (mm): Control module: 76 mm X 109 mm X 25 mm; User Console: 79 mm X 79 mm X 24 mm
Includes: CT280-3H3C control module, TH146 user console, AC144-03 Outdoor Temperature Sensor (3-m/10-ft) with Mounting Clip
Used With: Aube CT240/CT241 Telephone Controllers; Aube AC146-410 Air Duct; Temperature Probe; Aube RC845 add-on fossil fuel relay; Aube AC130-12 wallplate
Comments: Two-piece Design: Two-wire User Console Connection, Dual-energy Input, Backlight
Item Type: Product
Mounting: Control Module: Horizontal; User console: Vertical
Stages: Up to 3 Heat/3 Cool Conventional; Up to 4 Heat/2 Cool Heat Pump
Operating Humidity Range (% RH): 0% to 95%, non-condensing
Supply Voltage: 24 Vac
Switch Positions (System): HEAT-OFF-COOL-AUTO-EM.HEAT
Switch Positions (Fan): AUTO/ON
Operating Temperature Range (F): 32 F to 122 F
Operating Temperature Range (C): 0 C to 50 C
LEDs: Console: System Fault, Em. Heat, Dual-energy; Module: 1 per output
Power Method: Hardwired
Ambient Temperature Range (C): 0 C to 70 C
Ambient Temperature Range (F): 32 F to 158 F
Color: White
Sensor Element: Thermistor
Accuracy (F): ±1 F
Accuracy (C): ± 0.5 C
Switch Type: Relay
Terminal Designations: R, C, Y1, Y2, Y3, W1, W2, W3, G, (O/B), L
Changeover: Auto or Manual Selectable
Setting Temperature Range (F): 40 F to 86 F
Setting Temperature Range (C): 5 C to 30 C
Cycles per Hour: 2-6 CPH (Heating and Cooling)
Cool Current: 1.0 A
Heat Current: 1.0 A
Fan Current: 1.0 A
Fan Operation: On/Auto