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GAS
VALVE
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OFF
1 flash *
2flashes *
3flashes *
4flashes *
5flashes *
6flashes *
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assembly off.
Electronic control module is powered and pilot lit.
Thermopile voltage low.
Gas control valve or tank sensor failure.
Gas control valve overheat failure
(pilot off or burner off).
Lower tank sensor failure (pilot on and burner off).
Upper tank sensor failure (pilot on and burner off).
__11111i[o]
Check for power to heater.
Check wiring harness for proper connection. Check for line voltage at harness connectors.
Normal operation. No action required.
inspect thermopile connection to gas control valve.
inspect flame coverage on thermopile. Check inlet gas pressure.
Run open circuit thermopile output test and change thermopile if output is low.
Replace pilot assembly. Restart gas control valve.
If main burner turns on after restart, replace tank sensor.
If main burner does not turn on after restart, replace gas control valve.
Replace gas control valve assembly and electric control module.
Verify tank sensor is connected to electric control module.
Verify tank sensor is connected to the heater tank.
Run tank sensor calibration check.
Replace tank sensor and electric control module.
Verify tank sensor is connected to electric control module.
Verify tank sensor is connected to the heater tank.
Run tank sensor calibration check.
Replace tank sensor and electric control module.
7flashes *
8flashes *
6 second solid light followed by 4 flashes * 6 second solid light followed by 7 flashes *
6 second solid light followed by 8 flashes *
6 second solid light with
combinations of 4 + 7
flashes *
6 second solid light with
combinations of 4+ 8
flashes *
6 second solid light with
combinations of 7 + 8
flashes *
6 second solid light with
combinations of 4 + 7 + 8
flashes *
Continuous solid light
Electric control module failure (pilot on or off and burner off).
Gas control valve failure (pilot off and burner off).
Pilot stays lit only when control knob is depressed in PILOT position.
Pilot stays lit only when control knob is depressed in PILOT position.
Pilot stays lit only when control knob is depressed in PILOT position.
Pilot stays lit only when control knob is depressed in PILOT position.
Pilot stays lit only when control knob is depressed in PILOT position.
Pilot stays lit only when control knob is depressed in PILOT position.
Pilot stays lit only when control knob is depressed in PILOT position.
System shutdown/safety interlock.
Replace electric control module.
Replace gas control valve assembly and electronic control module.
Overheat failure. Replace gas control valve assembly and electronic module.
Electronic control module failure. Replace module.
Gas control valve failure. Replace gas control valve assembly and electronic control module.
Overheat failure and electronic control module failure. Replace gas control valve assembly and electronic module.
Overheat failure and gas control valve failure. Replace gas control valve assembly and electric module.
Electric control module failure and gas control valve failure. Replace gas control
valve assembly and electronic module. Overheat failure, electronic control module
failure, and gas control valve failure. Replace gas control valve assembly and electronic module.
Wait until light goes out to restart gas control valve.
*Flashes are approximately 1/10 second in duration with approximately three seconds between groups of flashes. 28
