Hayward H350FDN User Manual

29
3. Open FC3 &/or F1 Fuse
Open FC3
&/or F1 Fuse
Check the remote
connection/high
limits
Is low voltage
wiring damaged,
pinched, or worn?
Is water pressure
switch wiring
damaged, pinched,
or worn?
Replace wire harness:
FDXLWHA1930
OR high limit if damaged:
FDXLHLI1930
YES
NO
YES
Are any wires
showing
continuity?
NO
Is blower vacuum
switch wiring
damaged, pinched,
or worn?
YES
Is gas valve wiring
damaged, pinched,
or worn?
NO
NO
YES
Test gas valve
wires for
continuity against
ground
Replace gas
valve:
(pg. 20)
YES
Inspect ICB
wiring, any wires
compromised?
YES
Replace wiring
harness:
FDXLWHA1930
Replace ICB:
FDXLICB1930
NO
Replace wire harness:
FDXLWHA1930
OR pressure switch if
damaged:
FDXLWPS1930
Replace wire harness:
FDXLWHA1930
OR vacuum switch if
damaged:
FDXLBVS1930
Replace wire harness:
FDXLWHA1930
OR Replace gas valve:
Please refer to (pg. 20)
NO

Hayward H350FDN Specifications

General

Brand	Hayward
Model	H350FDN
Category	Heater
Language	English