STA-RITE SR200NA Service Manual page 89

SECTION SEVEN – Troubleshooting
Diagnostic LED's: SFS
SFS "on"
A) Is the Stack Flue
Switch or Sensor
correctly connected to
the wiring harness?
B) Is the Membrane Pad
connected to the
correct pins on the
Control Board?
(See Page 4-30)
YES
Check the J3 and J6
NO
connectors for corrosion
on the male pins.
Corrosion found?
YES
Clean pins
DONE
Reset power to Heater
and retry. Heater should
fire.
NO
Verify whether you have a
Stack Flue Sensor or a
Stack Flue Switch
(See Page 4-11).
SWITCH
Does the Digital
Temerature Display
show Error Code "E05" or
"E06"?
NO
Reset power to Heater
and retry. Heater should
fire.
NO
Replace switch, reset
power to Heater and retry.
NO
Reconnect correctly.
NO
Reset power to Heater and
retry. Heater should fire.
Replace Stack Flue Sensor.
Does the Digital Temerature
Display show Error Code
"E05" or "E06"?
SENSOR
Change Low Level Board
Programming to "SF0" (See
YES
Page 4-11). Were you able to
change the device code (SF1
to SF0)?
YES
Check Heat Exchanger Coil
for liming or low flow.
DONE
YES
NO
YES
NO
7-8
Replace Heater Membrane
Pad Assembly, reset power to
Heater and retry. Heater
should fire.
NO
Replace Heater Control Board
with new style board, reset
power to Heater and retry.
Heater should fire.
NO
Change Low Level Board
Programming to "SF1" (See
Page 4-11). Were you able to
change the device code (SF0
to SF1)?
YES
Reset power to Heater and
retry. Heater should fire.
NO
Check Heat Exchange Coil for
liming or low flow.
Reset power to Heater and
retry. Fire?
YES
Did Error Code (E05 or E06)
disappear after change?
NO
Replace Heater Control
Board, reset power to Heater
and retry. Heater should fire.
NO
Replace Heater Membrane
Pad Assembly, reset power to
Heater and retry. Heater
should fire.