TOTALINE P474-0140 User Manual

OWNER'S MANUAL
MODEL P474-0140
Non-Programmable
Digital Thermostat
TOTALINE
Star
Replacement Components Division - Carrier Corporation
HEAT PUMP THERMOSTAT
2 HEAT, 1 COOL
Millivolt Compatible
Battery or System
Powered
Digital Display
DC Voltage Compatible
Stages: 2-Heat, 1-Cool
Easy Operation
TOTALINE
emergency
normal
energy save
aux.
heat
72
Heat
Off Cool
Fan On
Fan Auto

TOTALINE P474-0140 Specifications

General

Brand	TOTALINE
Model	P474-0140
Category	Thermostat
Language	English

Summary

Safety Warnings

Installation and Power Safety

Essential safety precautions for disconnecting power before installation and handling.

Battery Replacement Schedule

Guidelines for timely battery replacement to ensure proper thermostat operation.

Front Panel Overview

Thermostat Controls and Indicators

Auxiliary Heat Function

Aux Heat Switch Settings

Details on the function of Emergency, Normal, and Energy Save switch positions.

Removing Old Thermostat

Wire Disconnection and Labeling

Installing Batteries

Battery Installation Procedure

Wire Connections

Terminal Designation Mapping

Chart for matching old thermostat terminals to new thermostat connections.

Sample Wiring Diagrams

5 Wire, 1 Stage Cooling, 2 Stage Heat, O Reversing Valve

Wiring diagram for a heat pump with O reversing valve, 2-stage heat, 1-stage cool.

4 Wire, 1 Stage Cooling, 1 Stage Heat, O Reversing Valve

Wiring diagram for a heat pump with O reversing valve, 1-stage heat, 1-stage cool.

4 Wire, 1 Stage Cooling, 1 Stage Heat, B Reversing Valve

Wiring diagram for a heat pump with B reversing valve, 1-stage heat, 1-stage cool.

5 Wire, 1 Stage Cooling, 2 Stage Heat, B Reversing Valve

Wiring diagram for a heat pump with B reversing valve, 2-stage heat, 1-stage cool.

Test Operation

Heating System Test

Procedure to test the heating function of the heat pump system.

Cooling System Test

Two Stage Heating Logic

Fan Operation Test

Troubleshooting

Switch Issues & AC Not Cooling

Heating System Failures

Fan & Aux Heat Not Operating