WV4262B POWERED DAMPER WATER HEATER CONTROLS
9 69-2496—03
TROUBLESHOOTING
Troubleshooting with LED
Indicator Assistance
1. Observe 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 perform lighting procedure.
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. 8.
Table 5. Troubleshooting with the LED.
7 Energize main gas valve The main valve is energized (when flame is proved above
the “RUN” level).
8 Wait 3 seconds to stabilize flame Flame and Pressure Switch signals are ignored for 3
seconds after the main valve is energized (Flame
Stabilization Period).
9 Temperature reaches setpoint The demand for heat is satisfied (temperature reaches set
point).
10 De-energize the main and pilot gas
valves
The gas valves are de-energized.
11 Monitor Flame Flame is monitored until flame signal drops below Flame
Lost level.
12 De-energize damper motor The damper motor is de-energized.
Sequence Mode Description
Green LED
Status Indicates Check/Repair
Short flash
once every
four seconds
Idle (no call for heat and no
faults)
Not Applicable.
“Heartbeat”,
alternates
bright/dim
Call For Heat (no faults) Not Applicable
Short flash
once per
second
(Idle mode)
Low Flame Signal on last call
for heat
• Check spark/flame sense rod for build up of silicone-dioxide.
• Check spark/flame sense wire insulation.
Two Flash,
three second
pause
Damper End Switch Failed
Closed
• Check damper end switch for welded contacts and shorted
wiring.
Three Flash,
three second
pause
TCO or Damper End Switch
Failed Open
• Check damper end switch for contact closure.
• Check wiring to damper end switch.
• Check damper motor is opening damper.
• Check damper for blockage.
Four Flash,
three second
pause
ECO Limit Lockout (water
temperature in excess of TCO)
• The control enters permanent lockout after three ECO events.
• 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.
• ECO 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 ECO trip point.
Five Flash,
three second
pause
Flame Out Of Sequence • Check for pilot flame.
• Replace control if pilot flame is present when gas valve
should be off.
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