Table of Contents
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This manual covers the following models:
• T855
Congratulations on purchasing a
new thermostat. This thermostat was
designed to the highest reliability and
ease of use standards. Thank you for
choosing Pro1.
Table of Contents
Thermostat Quick Reference
Thermostat Operation
Programming
Contact Us and Warranty Registration
® U.S. Registered Trademark. Patents pending.
Copyright © 2006 Pro1 IAQ, Inc. All rights reserved.
Page
Need Help?
2
For assistance with this product please
3
visit http://www.pro1iaq.com or call Pro1
4
Customer Care toll-free at 888-Pro1iaq
6
(776-1427) during normal business hours
(Mon-Fri 9 AM - 6 PM Eastern)
Una versión española de este
manual puede ser descargada
en www.pro1iaq.com
OPERATING MANUAL
Caution:
Equipment damage hazard
Do not operate the cooling
system if the outdoor
temperature is below 50˚ F
(10˚ C) to prevent possible
compressor damage.
Rev. 0730
1
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Summary of Contents for Pro1 IAQ T855
- Page 1 (776-1427) during normal business hours (Mon-Fri 9 AM - 6 PM Eastern) Una versión española de este manual puede ser descargada en www.pro1iaq.com ® U.S. Registered Trademark. Patents pending. Copyright © 2006 Pro1 IAQ, Inc. All rights reserved. Rev. 0730...
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Page 2: Product View
THERMOSTAT QUICK REFERENCE Getting to know your thermostat Displays the user Hold is displayed when Indicates the selectable setpoint thermostat program is current room temperature. permanently overridden. Days of the temperature. week and time +1 will appear in the display when second stage of heat or cool is on. -
Page 3: Controls
THERMOSTAT OPERATION Easy to use controls Caution: When the battery icon appears replace your AA batteries immediately. Failure to do so may result in your heating & cooling system becoming inoperable. A Note About Auto Changeover: Auto changeover will switch between heating and cooling as needed. -
Page 4: Set Time
PROGRAMMING THE THERMOSTAT Set Time Important: Follow the steps below to set the current time: You will see a TECH SET Press MENU option after the MENU key is pressed. Press SET TIME Day of the week will be flashing. This TECH SET key is for Use the key to select the current... -
Page 5: 7 Day Program Schedule
PROGRAMMING THE THERMOSTAT Set 7 Day Program Schedule To customize your 7 day program schedule, follow these steps: Select HEAT or COOL using the system key. You have to program heat and cool each separately. Press MENU Press SET SCHED Filter Change Reminder Note: Monday is displayed and the WAKE icon is shown. -
Page 6: Warranty Registration
60 days of installation. You can register your new thermostat in 2 ways. Go to www.pro1iaq.com, select warranty registration and fill out a short registration form. - or - Complete the form below and mail it to the address shown. Pro1 IAQ Warranty Registration: Name: ____________________________ Thermostat Model:...
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Do you have a question about the T855 and is the answer not in the manual?
Questions and answers
Sometimes it will just blow cold air (instead of heat) and wont shut off unless I turn it off and then restart it.
The Pro1 IAQ T855 thermostat could blow cold air instead of heat and not shut off without a restart due to several possible reasons:
1. Incorrect System Configuration – The thermostat may be set to cooling mode instead of heating mode.
2. Faulty Wiring – Incorrect wiring connections or loose wires can cause the system to malfunction.
3. Heat Pump System Issues – If the thermostat is controlling a heat pump, an issue with the reversing valve could cause it to blow cold air instead of heat.
4. Compressor Lockout – If the outdoor temperature is below 50˚F (10˚C), the cooling system should not be operated to prevent compressor damage. If the system is trying to run cooling mode in such conditions, it may behave abnormally.
5. Thermostat Software or Hardware Malfunction – A malfunctioning thermostat may not properly switch between heating and cooling, requiring a restart to reset the system.
Checking the thermostat settings, wiring, and system compatibility can help diagnose the issue. If the problem persists, professional service may be required.
This answer is automatically generated