A.O. Smith Gphe 50 - Troubleshooting Guidelines (Continued); Intelli-Vent Troubleshooting Chart (Continued)

36
# LED STATUS PROBLEM SOLUTION
7
8
9
Self diagnostic check has detected
a problem with the gas valve driver
circuit, internal microprocessor, or
other internal circuits.
1 Turn the power off for 10-20 seconds then on again to
clear these error codes.
2 If any of these error codes persist or cannot be cleared -
replace the gas control valve/thermostat.
10
Flame signal sensed out of proper
sequence.
1 Turn the power off for 10-20 seconds then on again to
clear these error codes.
2 Replace the gas control valve/thermostat if this error
code persists.
11
Water in the tank has exceeded
the maximum allowable
temperature, activating the ECO
(energycutoff).
1 Turn the power off for 10-20 seconds then on again to
clear these error codes.
2 Replace the gas control valve/thermostat if the error
code persists.
12
One or both of the temperature
adjust buttons are stuck.
1 Press and release both temperature adjust buttons
several times - cycle water heater power off and on.
2 Replace the gas control valve/thermostat if the error
code persists.
13
The water temperature sensor
(locatedinthecontrolvalve’s
immersionprobe)iseitheropenor
shorted.
1 Turn the power off for 10-20 seconds then on again to
clear these error codes.
2 Replace the gas control valve/thermostat if the error
code persists.
14
TheFV(ammablevapor)sensor
is either open or shorted..
1 Turn off power to the water heater. Ensure all FV
sensor wiring, the ignitor assembly plug, and the ignitor
assembly socket on the bottom of the Intelli-Vent
control are making good contact. Repair or replace any
worn/damaged components that are not making good
connection.
2 Replace the FV sensor.
15
Self diagnostic check has detected
thepresenceofammablevapors
fromtheFV(ammablevapor)
sensor.
1 Do not touch any electrical switch, do not use any
phone in your building, and do not try to light any
appliance.
2 Smell around the water heater to ensure there are no
gas leaks at the gas control valve/thermostat, in the
supplygasline(s),oranyothertypeofammable
vapor(s)inthearea..
3 Carefully inspect the area surrounding the water heater
for any substances such as gasoline, paint, paint
thinners,varnish,orcleanersthatcouldemitammable
vapors. Remove anything that can potentially emit
ammablevaporsfromtheareaandstoreitproperlyin
a different location.
3 Call the technical information support phone number
shown on the water heater labeling for further
assistance.
16
Air pressure switch circuit is
opening repeatedly during one
heating cycle.
LDO(Lint,Dust,andOil)lockout
condition.
1 On models equipped with a dilution air intake screen on
the blower assembly - check/clean the screen.
2 On models equipped with a combustion air intake
screenonthebasering(bottom)ofthewaterheater-
check/clean the screen.
3 Ensureintakeairscreen(s)onmodelssoequippedare
not obstructed.