Emerson 750 Specifications, Troubleshooting, Check Your Programming, From Fifth

6 PROGRAMMING YOUR THERMOSTAT

CONTINUED FROM FIFTH PAGE

6.Repeat steps 4 and 5 to select the start time and heating temperature for the 2nd heating program period.

7.Repeat steps 4 through 6 for the 3rd and 4th heating program periods. Weekday heating programs are now complete.

8.Press PRGM once. “SA SU” (indicating weekend program) will appear in the display, along with the start time for the 1st heating period and the currently programmed temperature.

9.Repeat steps 4 through 8 to complete weekend heating programming.

10.When you have completed entering your heating program, press RUN.

Enter Cooling Program

If the outside temperature is below 50° F, disconnect power to the cooling system before programming. Ener- gizing the air conditioner compressor during cold weather may cause personal injury or property damage.

1.Move SYSTEM switch to COOL position.

2.Follow the procedure for entering your heating program, using your selected cooling times and temperatures.

Check Your Programming

Follow these steps to check your thermostat programming one final time before beginning thermostat operation.

1.Move SYSTEM switch to HEAT position.

2.Press PRGM to view the 1st weekday heating period time and temperature. Each time you press PRGM, the next heating period time and temperature will be displayed in sequence for weekday, then weekend program periods (you may change any time or temperature during this procedure).

3.Press RUN.

4.Move SYSTEM switch to COOL position.

5.Repeat step 2 to check cooling temperatures.

6.Press RUN to begin program operation.

YOUR THERMOSTAT IS NOW COMPLETELY PROGRAMMED AND READY TO AUTOMATICALLY PROVIDE MAXIMUM COMFORT AND EFFICIENCY!

7 SPECIFICATIONS

ELECTRICAL DATA

Electrical Rating:

MV to 30 VAC 50/60 Hz. or D.C.

0.05 to 1.0 Amps (Load per terminal)

1.5Amps Maximum Total Load (All terminals combined)

THERMAL DATA

Setpoint Temperature Range:

45° F to 90° F (7° C to 32° C)

Operating Ambient Temperature Range:

32° F to 105° F

Operating Humidity Range:

0 to 90% RH (non-condensing)

Shipping Temperature Range:

-40°F to 150° F

8 TROUBLESHOOTING

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 , and TIME at the same time. This also resets the factory defaults. If the thermostat has power, has been

reset and still does not function correctly contact your heating/ cooling service person or place of purchase.

Batteries

For optimum performance, we recommend replacing batteries once a year with fresh “AAA” Energizer® alkaline batteries.

Symptom	Possible Cause		Corrective Action
No Heat/No Cool/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.	Re-light pilot.
	2.	SYSTEM Switch not set to HEAT.	Set SYSTEM Switch to HEAT and raise setpoint
			temperature above room temperature.
	3.	Loose connection to thermostat or system.	Verify thermostat and system wires are securely
			attached.
	4.	Furnace Lock-Out Condition. Heat may also	Many furnaces have safety devices that shut
		be intermittent.	down when a lock-out condition occurs. If the
			heat works intermittently contact the furnace
			manufacturer or local service person for
			assistance.

www.white-rodgers.com