6 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.
7 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: |
|
Heat
Anticipator (adjustable)
WR
Heating
System
24 VAC
THERMOSTAT
SYSTEM
Hot
120 VAC
Neutral
Temperature Range | 50°F to 90°F (10°C to 32°C) |
Operating Humidity Range | 0 – 90% noncondensing |
Figure 3. Typical wiring for single transformer heating system
8 TROUBLESHOOTING
Symptom | Possible Cause | Corrective Action | |
No Heat/ No Fan | 1. | Blown fuse or tripped circuit breaker. | Replace fuse or reset breaker. |
(common problems) | 2. | Furnace power switch to OFF. | Turn switch to ON. |
| 3. | Furnace blower compartment door or | Replace door panel in proper position to engage |
|
| panel loose or not properly installed. | safety interlock or door switch. |
|
|
|
|
No Heat | 1. | Pilot light not lit. | |
| 2. | Broken or melted anticipator wire. | Excessive current or dead short in system. Have a qualified service person check the system |
| 3. | Loose connection to thermostat | before replacing thermostat. |
|
| or system. | Verify thermostat and system wires are securely attached. |
| 4. | Thermostat or heating system requires | Your furnace manufacturer or service person can describe how to test the heating system to |
|
| replacement or service. | verify it is operating correctly. If the heating system is capable of operation and the no heat |
| 5. | System Switch not set to Heat. | condition persists, replace the thermostat. |
|
|
| Set System Switch to Heat and raise temp above room temp. |
|
|
|
|
Intermittent Heat | 1. | Furnace | Many furnaces have safety devices that shut the system down when a |
|
|
| If the heat works intermittently contact the furnace manufacturer or local service person for |
|
|
| assistance. |
|
|
|
|
Heat or Fan Runs | 1. | Possible short in wiring. | Check each wire connection to the thermostat to verify it is neatly looped under the terminals. |
Constantly. | 2. | Possible short in thermostat. | No extra wire should stick out from under the terminals. |
| 3. | Possible short in heat/cool/fan system. |
|
|
|
| |
Furnace Cycles Too Fast | See Step 5, Adjusting the Anticipator. | The anticipation setting is the only adjustment that effects the heating cycle rate. If an accept- | |
or Too Slow Narrow or |
|
| able cycle rate is not achieved using the anticipator contact a local service person for addi- |
wide temperature swing |
|
| tional suggestions. The location of the thermostat, size of the Heat/Cool System and current |
|
|
| draw can influence the cycle rate. |
|
|
|
|
Thermostat Setting and | 1. | Thermostat thermometer setting | The thermometer can be adjusted by using a standard slotted screwdriver. Turn the thermom- |
Thermostat Thermometer |
| requires adjustment. | eter pointer screw located inside the front cover to change the setting. For calibrating the |
Disagree | 2. | Thermostat setting lever requires | setting lever contact a local heating and cooling service person. |
|
| calibration. |
|
|
|
|
|
Adjusting Thermometer | 1. | Thermostat thermometer disagrees | The thermometer on the thermostat is accurately calibrated at our factory but you can adjust it |
|
| with other room thermometers. | by using a standard slotted screwdriver. Turn the thermometer pointer screw located inside |
|
|
| the front cover to change the setting. |
|
|
|
|
White-Rodgers is a division of Emerson Electric Co.
The Emerson logo is a trademark and service mark of Emerson Electric Co.