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NEW THERMOSTAT OPERATION
This thermostat is easy to operate. After power is turned on, use the system switch to
select heating, or to turn the heating system off.
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SPECIFICATIONS
ELECTRICAL DATA
Switch Rating...................................... 24 VAC (30 VAC max.)
Heating.................................................. 0.15 to 1.2 Amps
Anticipator Rating:
Heating.................................................. Adjustable from 0.15 to 1.2 Amps
THERMAL DATA:
Temperature Range............................. 50°F to 90°F (10°C to 32°C)
Operating Humidity Range................. 0 – 90% noncondensing
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TROUBLESHOOTING
Symptom
Possible Cause
No Heat/ No Fan
1. Blown fuse or tripped circuit breaker.
(common problems)
2. Furnace power switch to OFF.
3. Furnace blower compartment door or
panel loose or not properly installed.
No Heat
1. Pilot light not lit.
2. Broken or melted anticipator wire.
3. Loose connection to thermostat
or system.
4. Thermostat or heating system requires
replacement or service.
5. System Switch not set to Heat.
Intermittent Heat
1. Furnace Lock-Out Condition
Heat or Fan Runs
1. Possible short in wiring.
Constantly.
2. Possible short in thermostat.
3. Possible short in heat/cool/fan system.
Furnace Cycles Too Fast
See Step 5, Adjusting the Anticipator.
or Too Slow Narrow or
wide temperature swing
Thermostat Setting and
1. Thermostat thermometer setting
Thermostat Thermometer
requires adjustment.
Disagree
2. Thermostat setting lever requires
calibration.
Adjusting Thermometer
1. Thermostat thermometer disagrees
with other room thermometers.
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
Corrective Action
Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage
safety interlock or door switch.
Re-light pilot.
Excessive current or dead short in system. Have a qualifi ed service person check the system
before replacing thermostat.
Verify thermostat and system wires are securely attached.
Your furnace manufacturer or service person can describe how to test the heating system to
verify it is operating correctly. If the heating system is capable of operation and the no heat
condition persists, replace the thermostat.
Set System Switch to Heat and raise temp above room temp.
Many furnaces have safety devices that shut the system down when a lock-out condition occurs.
If the heat works intermittently contact the furnace manufacturer or local service person for
assistance.
Check each wire connection to the thermostat to verify it is neatly looped under the terminals.
No extra wire should stick out from under the terminals.
The anticipation setting is the only adjustment that effects the heating cycle rate. If an accept-
able cycle rate is not achieved using the anticipator contact a local service person for addi-
tional suggestions. The location of the thermostat, size of the Heat/Cool System and current
draw can infl uence the cycle rate.
The thermometer can be adjusted by using a standard slotted screwdriver. Turn the thermom-
eter pointer screw located inside the front cover to change the setting. For calibrating the
setting lever contact a local heating and cooling service person.
The thermometer on the thermostat is accurately calibrated at our factory but you can adjust it
by using a standard slotted screwdriver. Turn the thermometer pointer screw located inside
the front cover to change the setting.
HOMEOWNER HELP LINE: 1-800-284-2925
www.white-rodgers.com
Anticipator
(adjustable)
W
Heating
System
24 VAC
Figure 3. Typical wiring for single transformer heating system
Heat
THERMOSTAT
R
SYSTEM
Hot
120 VAC
Neutral
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