“SF” OR
“HS” Code
Check display for
“
SF
” code
Is “SF” code
present?
The “
HS
” code
stands for High
Sense (water
temperature).
YES
NO
Ohm thermistor,
checking each red to
black, do the readings
differ by more than 1°?
40
Replace
thermistor:
FDXLTER1930
YES
NO
8. Service LED ON: “SF” OR “HS” Code
Replace ICB:
FDXLICB1930
Make sure water
inlet & outlet are
plumbed correctly,
are they reversed?
YES
Plumb correctly in
compliance with
installation manual
NO
Ohm thermistor,
checking each red to
black, do the readings
differ by more than 1°?
NO
Replace ICB:
FDXLICB1930
Replace
thermistor:
FDXLTER1930
YES
Содержание H150FDN
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Страница 18: ...Universal H Series Heaters Troubleshooting ...
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Страница 65: ...Wiring Connection Diagram 65 ...