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Sequence
7
Energize main gas valve
8
Wait 3 seconds to stabilize flame
9
Temperature reaches setpoint
10
De-energize the main and pilot gas
valves
11
Monitor Flame
12
De-energize damper motor
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.
Green LED
Status
Short flash
Idle (no call for heat and no
once every
faults)
four seconds
"Heartbeat",
Call For Heat (no faults)
alternates
bright/dim
Short flash
Low Flame Signal on last call
once per
for heat
second
(Idle mode)
Two Flash,
Damper End Switch Failed
three second
Closed
pause
Three Flash,
TCO or Damper End Switch
three second
Failed Open
pause
Four Flash,
ECO Limit Lockout (water
three second
temperature in excess of TCO)
pause
Five Flash,
Flame Out Of Sequence
three second
pause
Mode
Table 5. Troubleshooting with the LED.
Indicates
Not Applicable.
Not Applicable
• Check spark/flame sense rod for build up of silicone-dioxide.
• Check spark/flame sense wire insulation.
• Check damper end switch for welded contacts and shorted
• Check damper end switch for contact closure.
• Check wiring to damper end switch.
• Check damper motor is opening damper.
• Check damper for blockage.
• The control enters permanent lockout after three ECO events.
• Control can be reset by turning the Setpoint knob to its
• ECO Limit should not be reached under normal operating
• Reduce the setpoint temperature to keep max. water
• Check for pilot flame.
• Replace control if pilot flame is present when gas valve
WV4262B POWERED DAMPER WATER HEATER CONTROLS
The main valve is energized (when flame is proved above
the "RUN" level).
Flame and Pressure Switch signals are ignored for 3
seconds after the main valve is energized (Flame
Stabilization Period).
The demand for heat is satisfied (temperature reaches set
point).
The gas valves are de-energized.
Flame is monitored until flame signal drops below Flame
Lost level.
The damper motor is de-energized.
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.
Check/Repair
wiring.
minimum setting for at least 30 seconds, then returning the
Setpoint knob to the desired temp.
conditions. Check installation to insure all manufacturer
recommendations were followed.
temperature further away from ECO trip point.
should be off.
9
Description
69-2496—03
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