Publicidad
Idiomas disponibles
Idiomas disponibles
ISSUE
6. Furnace operates but turns
"OFF" before room temperature
is attained.
7. Furnace operates but will
not shut "OFF" when room
temperature is attained.
8. Abnormal operation.
POSSIBLE CAUSE(S)
D. Loss of circulating air due
to leakage.
A. Thermostat location.
B. Defective thermostat.
A. Thermostat wiring
defective.
B. Thermostat location.
C. Improper thermostat
anticipator setting.
A. Blower noise.
B. Expansion noise ticking.
C. Selector switch defective
(2 speed)
CORRECTIVE ACTION
D. Check header plate installation and proper use of gaskets. Repair
as necessary.
A. Check location of thermostat. It should not be in the path of warm air
discharge from the furnace, near a lamp, or above a TV set or stereo.
B. Check thermostat calibration or replace.
A. Check thermostat wiring from furnace to thermostat - may be shorted
to gether by a nail or staple.
B. Check thermostat location - if on an outside wall or there is a hole in wall
behind the thermostat causing cold air to contact thermostat, relocate
the thermostat.
C. Set anticipator per THERMOSTAT ANTICIPATOR, page 19-20.
A. Check motor mounts - they may be loose. Blower wheel could be out of
balance. Set screw may be loose on motor shaft. Blower may be
rubbing on fan shroud. Motor may need oiling. Correct as needed.
B. Check installation. Casing may be twisted or not level at time of
installation causing combustion chamber to bind on its locating pins.
C. During normal furnace operation the motor will be on "LOW" speed
when operating on minimum input capacity and on "HIGH"
speed when operating at maximum input capacity. If there is no
change in motor speed, replace selector switch.
COUNTERFLOW TOP VENT GAS WALL HEATER
35
Publicidad
