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PILOT WON'T LIGHT
(GAS SUPPLY PROBLEM)
If the pilot doesn't light, check igniter (look for spark).
If no spark, check igniter wires. If igniter sparks, it's
likely a gas supply problem. Make sure the main gas
valve is on. Make sure the control knob is fully pushed
in. Check the gas pressure using a manometer or
gauge. If new installation, bleed air from the gas line.
5
THERMAL SWITCH
DIDN'T TRIP
If the thermal switch didn't trip, check the thermopile.
Set meter to millivolts. Open the back of the connector
and check millivolts on connector terminals. Pilot
must be lit. If the reading is below 350mV, replace
the thermopile. If the reading is above 350mV and all
wiring connections are secure, replace the gas valve.
1-800-431-3000
En español 1-800-511-5652
3
PILOT LIGHTS
After pilot lights, continue to hold the control knob
in for 90 seconds. Status light must flash once per
second for water heater to operate. For any other
flash codes, consult Instruction Manual.
6
THERMAL SWITCH TRIPPED
(AIR SUPPLY PROBLEM)
If the thermal switch tripped, it is likely an air supply
problem. Clean air filter and flame arrestor. Room
must supply adequate air. Conduct "draft test." Turn
main burner on. After five minutes of main burner
operation, smoke source should be drawn into draft
hood. If not, you have an air supply/venting problem.
hdsupplysolutions.com
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Table of Contents
Troubleshooting
