Honeywell WV4460E Instructions D'installation page 9

TROUBLESHOOTING
Troubleshooting with LED
Indicator Assistance
1. Observe green LED indicator on control; check and
repair the system as noted in Table 5. Error flash
codes are displayed with a 3 second pause before
repeating.
2. After LED flash code analysis and appliance repair
are complete, turn system switch to ON and per-
form lighting procedure.
Green LED
Status
Short flash Idle (no call for heat and no faults)
once every four
seconds
"Heartbeat", Call For Heat (no faults)
alternates
bright/dim
Short flash Low flame signal on last call for heat
once per
second
(Idle mode)
Two Flash, Pressure Switch Failed Closed
three second
pause
Three Flash, Pressure Switch Failed Open
three second
pause
Four Flash, TCO Limit Lockout (water temperature in
three second excess of TCO)
pause
Five Flash, Flame Out Of Sequence
three second
pause
Six-One Flash, Soft Lockout - Failed Trial For Ignition
three second
pause
Six-Two Flash, Soft Lockout - Recycle Limit - PS/Limit
three second opened
pause
Six-Three Soft Lockout - Recycle Limit - Flame Lost
Flash, three
second pause
Six-Four Flash, Soft Lockout - Flame out of Sequence
three second Sensed
pause
Table 5. Troubleshooting with the LED.
Indicates
WV4460E POWER VENT WATER HEATER CONTROLS
3. Observe the ignition sequence, comparing it to the
Sequence of Operations shown in Table 4. Allow the
new ignition sequence to proceed until appliance
lights or an abnormal or unexpected event is
observed.
4. If an unexpected event is observed, use the
Troubleshooting Guide, Fig. 9.
Check/Repair
Not Applicable.
Not Applicable
• Check spark/flame sense rod for build up of silicone-
dioxide.
• Check spark/flame sense wire insulation.
• Check Pressure Switch for welded contacts, shorted
wiring, and blockage in tubing to pressure connection.
• Check Pressure Switch for contact closure.
• Check wiring to pressure switch.
• Check inducer motor is spinning up to speed.
• Check venting for blockage.
• Control can be reset by turning the Setpoint knob to its
minimum setting for at least 30 seconds, then
returning the Setpoint knob to the desired temp.
• TCO Limit should not be reached under normal
operating conditions. Check installation to insure all
manufacturer recommendations were followed.
• Reduce the setpoint temperature to keep max. water
temperature further away from TCO trip point.
• Check for pilot flame.
• Replace control if pilot flame is present when gas
valve should be off.
• Check gas supply.
• Verify air is purged from gas lines if appliance has not
run for an extended period of time.
• If pilot flame lights, but control still enters 6-1 flash
lockout, check flame rod for silicone-dioxide build-up.
• Check flame signal strength (if proper tools are
available).
• If pilot lights but flame sense can not be repaired,
replace control.
• Check venting to insure pressure switch is not
momentarily opening as the appliance warms.
• Check vent outlet for wind-gust problems.
• Check PS and Limit wiring.
• Check pilot flame to insure main flame is not lifting
pilot flame away from flame sense rod.
• Check gas supply to insure pressure is maintained
when main burner lights.
• Check that pilot flame does not linger after valves
close.
9
69-1872EF—01