User Manual

26
d. If these two readings do not coincide within acceptable tolerances and
verification has been made of the accuracy of the temperature-reading gauge,
replace the control board and/or the sensor probe.
2. Lift test lever on relief valve and let water run through valve for a period of
approxim
ately 10 seconds. This will help flush away any sediment that m
ight build up
in water passageways.
3. Inspect element for leakage as follows:
a. Shut off power supply.
b. Remove front cover.
c. Visually inspect around heating element for evidence of leaks.
d. Rub around the heating element with a rag. Check for any evidence of
m
oisture. If moisture is present or a wa
ter drip is observed, follow procedure
outlined in Section V.
CAUTION
: The area around the heating element ma
y be hot.
4. Scale and m
ineral build-up on heating elements is a norma
l condition. It is
recommended that the heating element be rem
oved for exam
ination and if scaled,
should be cleaned. In an area of known hard or poor water conditions, the elements
m
ay need to be checked more frequently. This will im
prove the efficiency of the
heater and increase the element life.
NOTE
: Failure of the elements due to scale and mineral build-up
is not covered under
warranty. See warranty for com
p
lete details.
a. Shut off power supply.
b. Drain the tank.
c. Remove front cover.
d. Disconnect the element wiring. It is recommended that one element at a time
is rem
oved to simp
lify re-wiring.
e. Unscrew element.
f. Lime scale removal
i. Place limed ends of the heating element in a de-limer solution, designed
for potable water applications, and allow lime to dissolve. Do not allow
de-limer to contact heating element terminals.
g.
Other scale removal
i. Silicates, sulfates, and aluminates must be removed by scraping or other
m
echanical means. De-limers will not
dissolve these types of scale.
h. Flush the cleaned ends of the elements with clean water.
i. Re-install element with new o-ring.
j. Re-attach element wires.
k. Continue until all heating elements are cleaned.
l. Fill the heater following the filling instructions provided in Section II and check
around the elements for leaks.
m. Re-apply power.
5. Check for loose electrical connections. Tighten as necessary.
SECTION IV – TROUBLESHOOTING
ERROR MESSAGES
1. Err, No, Prb
a. This me
ssage will flash when the controller does not detect that the probe is
connected to the control board. To clear this error reinsert the probe connector
and press RESET.
2. Err
, too, hot, ### (where ### is the actual temp
erature of the water.)