Troubleshooting Items; Troubleshooting Guide - Kenmore 153.330270 Use & Care Manual

2. The water temperature exceeds 189°F (87°C).
3. Excessive contaminants in the combustion chamber.
4. The ignition of flammable vapors.
A thermopile is used to determine if a pilot fl ame is present and
will shut off the gas supply to the main burner and pilot if the
fl ame is absent. This unit is also equipped with a combustion
chamber temperature sensor. This sensor will shut off the gas
supply to the burner if lint, dust, or other contaminants pollute
the burner. If the gas control valve/thermostat shuts off the gas
supply, check the diagnostic fl ash code and refer to the "Status
Light Troubleshooting Chart." If necessary, also refer to the

"Troubleshooting Guide."

Also, a temperature limit switch or ECO (Energy Cut Off) sensor
located in the gas control valve\thermostat is used to shut
off the water heater if the water temperature exceeds 189°F
(87°C). The Diagnostic Status Light will flash a code indicating
an "Overheat Failure" (4 Flashes). See "Operating the
Temperature Control System." If the ECO has functioned, the
gas control valve/thermostat should be replaced by a qualified
technician. Contact Sears Service for service information.
If the Diagnostic Status Light indicates an "LDO Occurrence"
(10 Flashes), refer to the "Status Light Troubleshooting Chart."
Leakage Checkpoints
A
B
E
D
6" MAXIMUM
AIR GAP
FIGURE 36.
C
H
G
I
F
Read this manual fi rst. Then, before checking the water heater,
make sure the gas supply has been turned "OFF", and never
turn the gas "ON" before the tank is completely full of water.
Never use this water heater unless it is completely fi lled with
water. To prevent damage to the tank, the tank must be fi lled
with water. Water must fl ow from the hot water faucet before
turning "ON" gas to the water heater.
A. Water at the draft hood is water vapor which has
condensed out of the combustion products. This is
caused by a problem in the vent. Contact a qualifi ed
technician.
B. *Condensation may be seen on pipes in humid weather or
pipe connections may be leaking.
C. *The anode rod fi tting may be leaking.
D. Small amounts of water from temperature-pressure relief
valve may be due to thermal expansion or high water
pressure in your area.
E. *The temperature-pressure relief valve may be leaking at
the tank fi tting.
F. Water from a drain valve may be due to the valve being
slightly opened.
G. *The drain valve may be leaking at the tank fi tting.
H. Combustion products contain water vapor which can
condense on the cooler surfaces of the tank. Droplets
form and drip onto the burner or run on the fl oor. This is
common at the time of start-up after installation and when
incoming water is cold.
I. Water in the water heater bottom or on the fl oor may be
from condensation, loose connections, or the relief valve.
DO NOT replace the water heater until a full inspection
of all possible water sources is made and necessary
corrective steps taken.
Leakage from other appliances, water lines, or ground
seepage should also be checked.
* To check where threaded portion enters tank, insert cotton
swab between jacket opening and fi tting. If cotton is wet,
follow draining instructions in the "Draining" section and then
remove fi tting. Put pipe dope or tefl on tape on the threads
and replace. When you are fi nished, follow the steps in
"Filling the Water Heater" in the Installation Instructions
earlier in this manual.
30