Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-355-7995 www.hayward-pool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
40
Code Fault
Diagnosis Step
Remedy
PF
Supply power
fault
3. Check supply voltage.
If supply voltage is below 100 VAC, have an electician remedy this
issue.
IO
Igniter Failure
1. Check for faulty wiring or
connection.
Inspect Igniter wiring. Ensure Igniter Plug is securely attached to
Control Module. If OK, proceed to step 2.
2. Igniter is defective
Replace Ignitier.
Sb
Keypad Failure
1. Keypad is defective
Replace bezel and keypad assembly.
SF
Temperature
sensor input
failure
1. Check for faulty wiring or
connection.
Inspect sensor wiring. Ensure sensor is pluggd into control module.
If OK, proceed to step 2.
2. Sensor is defective
Replace temperature sensor.
HS
Water
Temperature
Sensing Error
1. Check remote thermostat
setting
Verify set point setting of remote thermostat is at or below 104°F. If
set point of remote thermostat is OK, or if heater is not con
fi
gured
for remote thermostat, proceed to step 2.
2. Verify that the water
fl
ow
is adequate
Verify that water
fl
ow to heater is above minimum required (20
GPM). Note that intermittent periods of low water
fl
ow will cause
this error. If OK, proceed to step 3.
3. Check inlet water
temperature sensor
Compare the heater's temperature reading to the pool water
temperature with an accurate thermometer. If signi
fi
cantly different,
replace inlet water temperature sensor.
HF
Flame Present
with Gas Valve
not Energized
1. ICB is defective
Using the sight glass, check to see if the
fl
ame is present in the unit.
If not, replace ICB. If
fl
ame is present, move to next step.
Without disconnecting the valve from the wiring harness, use
a voltmeter to determine if 24 VAC is present at the gas valve
connections. If so, replace ICB. If not, move to step 2.
2. Gas Valve is defective
Replace Gas Valve
Figure 222:
TROUBLESHOOTING
(continued)