Appendix: Heat Pump Identifi Cation - White Rodgers UNP300 Installation Instructions & User Manual

5 Troubleshooting Guide (continued)
Reset Operation
If a voltage spike or static discharge blanks out the display or
causes erratic thermostat operation, you can reset the thermostat
by pressing all three buttons (HOME, and
for 4 seconds. This reset will restore your thermostat's initial
factory setting.
Remember to turn off your heating / cooling
system BEFORE resetting your thermostat. You will then have to
go through a full initial setup described in Part 3 and Part 4 of the
manual before you can turn your Heating & Cooling system back on.
Failure to follow this instruction may lead to your Heating & Cooling
system damage or malfunction.
both ) simultaneously
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Appendix: Heat Pump
Identifi cation
1. How do I know if I have a Heat Pump?
• Check the documentation for your heating and cooling system or
contact your HVAC contractor.
• Confi rm that you have a Heat Pump by checking the labels of the
wires coming out from the wall (labels you attached according to the
right-hand column of the 2.2.2
According to the right-hand column
of the 2.2.2 table, if you have:
An "O" wire, or a "B" wire
2. How do I know if I should select
• The labeled thermostat wires coming out of the wall indicate whether
you have a 1-stage or 2-stage
According to the right-hand column
of the 2.2.2 table, if you have:
One "Y" wire coming from the wall
One "Y" wire and one "Y2" wire
coming from the wall
table).
You have:
A Heat Pump
On1 or On2 for my Heat Pump?
Heat Pump.
You have:
1-stage Heat Pump, select On1
2-stage Heat Pump, select On2
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