Pro1 T621-2 Operation manual

This manual covers the following models:

• T621-2

OPERATING MANUAL

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 Page

Thermostat Quick Reference
Thermostat Operation
More Information
Contact Us and Warranty Registration

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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.

Need Help?

For assistance with this product please
visit http://www.pro1iaq.com or call Pro1
Customer Care toll-free at 888-Pro1iaq
(776-1427) during normal business hours
(Mon-Fri 9 AM - 6 PM Eastern)

® U.S. Registered Trademark. Patents pending.
Copyright © 2010 Pro1 IAQ, Inc. All rights reserved.

Una versión española de este

manual puede ser descargada
en www.pro1iaq.com

Rev. 1043

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Getting to know your thermostat

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THERMOSTAT QUICK REFERENCE

LCD

1

Low Battery Indicator:

5

Indicates the current
room temperature.

+1 will appear in the
display when the auxiliary
heat is active.

Replace batteries when
indicator is shown.

System operation
indicators: ON will

display when the

COOL, HEAT or
Emergency Heat is on.

Displays the user
selectable setpoint
temperature.

Fan Switch

2

3

System Switch

4

Easy Change Battery Door

5

Setpoint Buttons

Battery door information

Use the finger bevel on
the lower portion of the
side of the thermostat to
open the easy access
battery door.

Important:

The low battery indicator is displayed
when the AA battery power is low. If
the user fails to replace the battery
within 21 days, the thermostat
display will only show the low battery
indicator as a final warning before the
thermostat becomes inoperable.

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