A.O. Smith SGE Installation And Operation Manual page 79

Symptom Cause
Water leakage Leakage from a water
connection (threaded)
Condensate leakage
Leakage from another
nearby water appliance
or pipe segment
Leakage from the
appliance's tank
Explosive ignition Incorrect supply
pressure and/or burner
pressure
Contaminated burner
Contaminated orifice
Hot water supply Appliance is turned off
insufficient or absent
No supply voltage
present
Hot water supply is
used up
The controller is in OFF
mode.
Temperature (T
set too low.
Instruction manual SGE
Solution
Tighten the threaded connection
Check that the condensation water discharge is working properly.
Rectify if necessary
Trace the leak
Consult the supplier and/or manufacturer
Set the correct supply pressure and/or burner
pressure. (3.13 "Checking the supply pressure and burner
pressure")
Clean the burner(s) (15.4.2 "Clean the burner(s)")
Clean the orifice(s) (15.4.3 "Clean the orifice(s)")
Start the appliance up (9 "Starting and running")
1. Check if the isolator is ON.
2. Check that there is power to the isolator.
3. Check whether the ON/OFF switch of the electronic controller is
ON (position I).
4. Check whether there is power to the electrical connector block.
5. The measured voltage must be 230 VAC (-15%, +10%).
Reduce hot water consumption and give the appliance time to heat
up.
Switch the controller to the ON mode
mode"")
) is Adjust (11.4 "Setting the water temperature")
set
a higher value.
Remark
If the leak persists, consult your installation engineer
If ignition is not improved, consult your installation engineer.
See the SGE electrical diagram
If the error persists, consult your installation engineer.
If there continues to be insufficient hot water, or none at all, consult
your installation engineer.
(11.3 "Switching on the "ON
temperature (T ) to
set
is
(17 "Appendices")
79