Instruction/ maintenance manual of the product 1F87-251 White Rodgers
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Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard. Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage.
2 INST ALLA TION REMOVE OLD THERMOSTAT 1. Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected. 2. Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall.
3 RH Y 24 V AC 120 V AC Hot Neutral THERMOST A T SYSTEM G W Figure 5. T ypical wiring diagram for heat/cool, 5-wire, two-transf ormer systems HEA TING TRANSFORME R (Class II Current Limited) Heating S.
4 Press HOLD to change to the next menu item or press TIME to go backwards to the previous item in the menu. To exit the menu and return to the program operation, press RUN. If no keys are pressed within fifteen minutes, the thermostat will revert to normal operation.
5 5) Select Compressor Lockout LOC OFF or ON - Selecting LOC ON will cause the thermostat to wait 5 minutes before turning on the compressor if the heating and cooling system loses power. It will also wait 5 minutes minimum between cooling cycles. This is intended to help protect the compres- sor from short cycling.
6 PROGRAMMING YOUR THERMOSTAT This section will help you plan your thermostat ’ s program to meet your needs. For maximum comfort and efficiency, keep the following guidelines in mind when planning your program.
7 5. Press PRGM once. The currently programmed start time and setpoint temperature for the Monday's 2nd heating program period will appear. 6. Repeat steps 3 and 4 to select the start time and heating temperature for Monday's 2nd heating program period.
Symptom Possible Cause Corrective Action N o 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 . T urn switch to ON. 3. Furnace blower compartment door or Replace door panel in proper position to engage panel loose or not properly installed.
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