STA-RITE SRC400NA - Page 43

SECTION FOUR – Routine Maintenance and Professional Servicing
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The new Control Board is designed to work with the
Stack Flue Switch and Flue Temperature Control Probe
(older heaters) or with the Stack Flue Sensor (newer
heaters). The old Control Board works with the Stack
Flue Switch and the Probe only.
Please see illustration (above) to identify Stack Flue
Protection and Control Board. Follow the procedure
below to program a new control board to match the
Stack Flue Protection (the old Control Board is not field
programmable).
1. Turn the power to the heater ON.
2. Press and hold the OFF button on the membrane
pad until the 3-digit display shows “Ad0” or “Ad1”
(about 10 seconds).
3. Release the button and then press it momentarily. T he
3-digit display will now show either “SF0” or “SF1”.
4. Use the arrow buttons on the membrane pad to set
the 3-digit display to read as follows:
For units with a Stack Flue Switch
(indoor or outdoor): .................................................SF0
For units with a Stack Flue Sensor:........................SF1
5. Momentarily press the “OFF” button to exit the pro-
gram. See the heater owner’s manual for normal
heater operation instructions.
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To check the Stack Flue temperature, press and hold for
five seconds either the Pool On key (if in pool mode) or
Spa On key (if in spa mode). The new Control Board
will then show the current Stack Flue temperature.
Release the key to allow the display to return to water
temperature. The old Control Board will not display the
Stack Flue temperature.
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Allow the heater to fire for five minutes before
making this check, to allow the Stack Flue time to get to
operating temperature.
4-11
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Old Board - 6 Pin
Connector on end of
Board
New Board -
9 Pin Connector
on extension on
end of Board
Stack Flue Sensor / Stack Flue Switch
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<250° F Very Low – Check thermal
(121° C) Regulator; Pull one bottom
manifold bolt to check for water
in the heat exchanger tub; if so,
drain tub and recheck to be sure
that there are no leaks in coil or
plumbing. If no leaks are found,
recheck at intervals; condition
may correct itself. If not, call
Sta-Rite Pool Customer Service.
250-290° F Low – Check thermal regulator;
(121-143° C) if OK, check heating value of gas
(may be low); if OK, condition
will probably correct itself over
time. Recheck in one month.
290-350° F Acceptable range – all models,
(143-177° C) all fuels; no action required.
>350° F High – Check Thermal Regulator;
(177° C) Check for Low Flow, Limed up
or Sooted Up Heat Exchanger;
Wrong Orifice; Orifice not
changed for altitude; Inadequate
ventilation or vent too long
(indoor only).
Old and new control Board Identification.
Old board is not field programmable.
Stack Flue Sensor;
1/2" Hex, 2" Leads:
Set Board to SF1
Outdoor Stack Flue
Switch (Obsolete):
Set board to SF0
Retrofit Probe (also
called Indoor Stack
Flue Switch); 3/4"
Hex, Terminals: Set
Board to SF0