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VT8800/WT8800 WATER HEATER CONTROLS
pilot and main valve will not hold. When the status
indicator goes out, the user can restart the system.
(Approximate shutdown time is one minute.)
3. After status indicator analysis and appliance repair
is complete, turn device knob to OFF, wait until the
indicator goes out, then perform lighting procedure.
4. Status indicator light should be in normal mode (1
flash) and turning the device knob past the water
temperature in the tank should turn on the main
burner.
Status Light
Number of LED Flashes
1 flash
2 flashes
3 flashes
4 flashes
5 flashes
6 flashes
7 flashes
8 Flashes
6-second long
flash, plus 4, 7,
or 8 flash
Continuous
solid light
a
Flashes are approximately 1/10th second in duration with approximately three seconds between groups of flashes.
69-1731
Table 6. Troubleshooting with Status Light Visual Indication.
a
Normal operation
Low supply voltage from
thermopile, operate normally if
enough voltage is available.
Sensor or Valve failure, Pilot On,
Main Valve Off.
Valve overheat failure, Pilot Off/
Main Valve Off.
Lower sensor failure, Pilot
On/Main Valve off.
Upper sensor failure, Pilot On/
Main Valve Off.
Electronic Control Failure, Pilot
On or Off/Main Valve Off.
Valve Failure, Pilot Off/Main
Valve Off.
Pilot stays lit only when control
knob depressed in PILOT
position.
System shutdown/safety
interlock
5. In the event of multiple failure codes, the next
failure code follows the previous failure code by
approximately three seconds with higher flash
count first.
Troubleshooting Without Status Indicator
Assistance
Follow diagram in Fig. 8.
Indicates
Control is powered, pilot is lit.
Inspect thermopile connection to
valve, flame coverage on
thermopile, inspect orifice
assembly for dirt, check inlet
pressure, run open circuit
thermopile output test and change
thermopile if output is low.
Restart control. If main turns on
after restart, replace sensor. If main
does not turn on after restart,
replace valve.
Replace Valve and Control.
Verify sensor is connected to
control.
Verify sensor assembly is attached
to tank.
Run Sensor Calibration check.
Replace Sensor and Control.
Verify sensor is connected to
control.
Verify sensor assembly is attached
to tank.
Run Sensor Calibration check.
Replace Sensor and Control.
Replace Control.
Replace Valve and Control.
Follow flash code error service
action.
Wait until light goes out to restart
control.
8
Service Action
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