Part 5 Troubleshooting Guide; Reset Operation - White Rodgers UP400 Installation Instructions & User Manual

Part 5 Troubleshooting Guide

Problem Possible Cause
Temperature set 2-minute lockout
point icon blinking enabled to protect
compressor
No Heat, No Cool, Blown fuse /
or No Fan tripped circuit
breaker
Furnace power
switch to OFF
Furnace blower
compartment door in proper position to
or panel loose or
not properly
installed
Loose connection
to thermostat
or system
Low Batteries
Thermostat &
Indoor
Thermometer
Setting Disagree
No Display or Low Batteries
no Backlight
Action
No action needed: should
stop blinking after
2 minutes
Replace fuse or reset
breaker
Turn switch to ON
Replace door panel
engage safety interlock
or door switch
Tighten connections
Replace batteries
The thermometer can be
adjusted +/- 4 degrees.
See Temperature Display
Adjustment in the
Confi guration Menu section
Replace batteries
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5 Troubleshooting Guide (continued)
Problem Possible Cause
Thermostat AM or PM set
doesn't follow the incorrectly in the
scheduled program program
AM or PM set
incorrectly on the
thermostat's clock
HEAT or COOL Part of normal
icon fl ashing in operation;
Auto Changeover indicates Heating
mode or Cooling
operation

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 (SYSTEM, and press both
simultaneously for 2 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.
Action
Check the current
settings including AM and
PM designations for
each time period
No action required
icons)
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