28
TROUBLESHOOTING GUIDE
These guidelines should be used by a qualifi ed service agent. Call Sears Service at 1-800-4-MY-HOME
®
(1-800-469-4663)
for assistance. Inform the associate that this is a “Flammable Vapor Ignition Resistant” Product.
* Flashes are approximately 1/10 second in duration with approximately three seconds between groups of fl ashes.
Problem
LED Status
Cause
Solution
Check for power to heater.
Check wiring harness for proper connection.
OFF
Electronic control module off or pilot
assembly off.
Check for line voltage at harness connectors.
1 flash *
Electronic control module is powered
and pilot lit.
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.
2 flashes *
Thermopile voltage low.
Replace pilot assembly.
Restart gas control valve.
If main burner turns on after restart, replace
tank sensor.
3 flashes *
Gas control valve or tank sensor
failure.
If main burner does not turn on after restart,
replace gas control valve.
4 flashes *
Gas control valve overheat failure
(pilot off or burner off).
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.
5 flashes *
Lower tank sensor failure (pilot on
and burner off).
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.
6 flashes *
Upper tank sensor failure (pilot on
and burner off).
Replace tank sensor and electric control
module.
7 flashes *
Electric control module failure (pilot
on or off and burner off).
Replace electric control module.
8 flashes *
Gas control valve failure (pilot off and
burner off).
Replace gas control valve assembly and
electronic control module.
6 second solid light
followed by 4 flashes *
Pilot stays lit only when control knob
is depressed in PILOT position.
Overheat failure. Replace gas control valve
assembly and electronic module.
6 second solid light
followed by 7 flashes *
Pilot stays lit only when control knob
is depressed in PILOT position.
Electronic control module failure. Replace
module.
6 second solid light
followed by 8 flashes *
Pilot stays lit only when control knob
is depressed in PILOT position.
Gas control valve failure. Replace gas control
valve assembly and electronic control
module.
6 second solid light with
combinations of 4 + 7
flashes *
Pilot stays lit only when control knob
is depressed in PILOT position.
Overheat failure and electronic control
module failure. Replace gas control valve
assembly and electronic module.
6 second solid light with
combinations of 4+ 8
flashes *
Pilot stays lit only when control knob
is depressed in PILOT position.
Overheat failure and gas control valve failure.
Replace gas control valve assembly and
electric module.
6 second solid light with
combinations of 7 + 8
flashes *
Pilot stays lit only when control knob
is depressed in PILOT position.
Electric control module failure and gas
control valve failure. Replace gas control
valve assembly and electronic module.
6 second solid light with
combinations of 4 + 7 + 8
flashes *
Pilot stays lit only when control knob
is depressed in PILOT position.
Overheat failure, electronic control module
failure, and gas control valve failure. Replace
gas control valve assembly and electronic
module.
GAS
VALVE
Continuous solid light
System shutdown/safety interlock.
Wait until light goes out to restart gas control
valve.
Summary of Contents for HydroSense 153.33443
Page 3: ...3 SAFETY PRECAUTIONS ...
Page 18: ...18 OPERATING INSTRUCTIONS ...
Page 27: ...27 FIGURE 28 GAS VALVE BACKPLATE GAS VALVE NIPPLE ...
Page 31: ...31 NOTES ...
