Hayward H400FDN Universal H Series Troubleshooting Guide - Page 58
Service LED ON: AO Code
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14. Service LED ON: "AO" Code "AO" Code Replace blower vacuum switch: FDXLBVS1930 Is blower YES damaged? NO YES Are blower vacuum switch wires damaged? NO section B YES Verify 110-125VAC on Inducer off ICB between pins 1-2 (left to right), is voltage present? NO Replace blower: Please refer to (pg. 20) Is vacuum tube YES damaged? NO Correct voltage YES selector plug? NO Install correct plug and replace fuse Replace blower vacuum switch: FDXLBVS1930 Replace ICB: FDXLICB1930 58 Replace vacuum tubing: IDXL2SNT1930 Ohm out blower for 8- 9ohms (before Sept. YES 2010) OR for 4-5ohms (after Sept. 2010), is resistance correct? NO Replace blower: Please refer to (pg. 20) Go to section B
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YES
“AO” Code
58
Replace blower:
Please refer to
(pg. 20)
Is blower
damaged?
14. Service LED ON: “AO” Code
Are blower
vacuum switch
wires damaged?
YES
YES
Replace blower
vacuum switch:
FDXLBVS1930
NO
Is vacuum tube
damaged?
NO
Replace
vacuum tubing:
IDXL2SNT1930
YES
NO
YES
Correct voltage
selector plug?
NO
Install correct
plug and
replace fuse
Ohm out blower for 8-
9ohms (before Sept.
2010) OR for 4-5ohms
(after Sept. 2010), is
resistance correct?
Replace blower:
Please refer to
(pg. 20)
NO
Verify 110-125VAC on
Inducer off ICB between
pins 1-2 (left to right), is
voltage present?
YES
NO
Replace blower
vacuum switch:
FDXLBVS1930
Replace ICB:
FDXLICB1930
Go to
section B
section B