Hayward H250FDP - IO or SB Code

“IO” OR
“SB” Code
Check display for
“IO” code
Is “IO” code
present?
The “SB” code may
clear with a reset of
power, power cycle
the heater
YES
NO
Verify ignitor wiring is
not damaged and
plugged in securely
7. Service LED ON: “IO” OR “SB” Code
38
Is ignitor wire
damaged?
Replace ignitor:
FDXLIGN1930
YES
NO
Ohm ignitor, verify
8-25 ohms (20°-
140°F), reading out
of range?
YES
NO
Replace ICB:
FDXLICB1930
Replace
display/bezel/
keypad:
(See Pg. 20)