Specifications; Electrical Data; Troubleshooting; Corrective Action - Emerson White-Rodgers 1F78 Instrucciones De Instalación

6

SPECIFICATIONS

ELECTRICAL DATA

Electrical Rating:
0 to 30 VAC 50/60 Hz. or D.C.
0.05 to 1.0 Amps (Load per terminal)
1.5 Amps Maximum Total Load (All terminals combined)
7

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
SYSTEM switch from OFF to HEAT. This also resets the factory
defaults. If the thermostat has power, has been reset and still does
Symptom
No Heat/No Cool/No Fan
(common problems)
No Heat
No Cool
at the same time while moving the
Possible Cause
1. Blown fuse or tripped circuit breaker.
2. Furnace power switch to OFF.
3. Furnace blower compartment door or
panel loose or not properly installed.
1. Pilot light not lit.
2. SYSTEM Switch not set to
3. Loose connection to thermostat or system.
4. Furnace Lock-Out Condition. Heat may
also be intermittent.
5. Heating system requires service or
thermostat requires replacement.
1. SYSTEM Switch not set to Cool.
2. Loose connection to thermostat or system.
3. Cooling system requires service or
thermostat requires replacement.
www.white-rodgers.com
THERMAL DATA
Setpoint Temperature Range:
45°F to 90°F (7°C to 32°C)
Operating Ambient Temperature Range:
32°F to 105°F (0°C to 41°C)
Operating Humidity Range:
0 to 90% RH (non-condensing)
Shipping Temperature Range:
-40°F to 150°F (-40°C to 66°C)
not function correctly contact your heating/cooling service person
or place of purchase.
Batteries
For best results, replace batteries once a year with new premium
brand alkaline batteries such as Duracell

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.
HEAT. Set SYSTEM Switch to HEAT and raise setpoint
temperature above room temperature.
Verify thermostat and system wires are securely
attached.
Many furnaces have safety devices that shutdown
when a lock-out condition occurs. If the heat works
intermittently contact the furnace manufacturer or local
service person for assistance.
Diagnostic: Set SYSTEM Switch to HEAT and raise the
setpoint above room temperature. Within a few seconds
the thermostat should make a soft click sound. This
sound usually indicates the thermostat is operating
properly. If the thermostat does not click, try the reset
operation listed below. If the thermostat does not click
after being reset contact your heating and cooling
service person or place of purchase for a replacement. If
the thermostat clicks, contact the furnace manufacturer
or a service person to verify the heating is operating
correctly.
Set SYSTEM Switch to COOL and lower setpoint
temperature below room temperature.
Verify thermostat and system wires are securely
attached.
Same procedure as diagnostic for No Heat condition
except set the thermostat to COOL and lower the
setpoint below the room temperature. There may be up
to a five minute delay before the thermostat clicks in
Cooling.
or Energizer .
® ®