Quick Service Guide

Technical Support

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Error Code Deﬁnition Service Action Possible Parts Needed

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Atmospheric Vent Water Heaters - ICON

No LED No pilot light / Heater not in operation Follow lighting instructions on the water heater 1) None

One ﬂash & three second pause Knob in pilot position or thermostat satisﬁed None 1) None

LED Strobe (two quick ﬂashes) Thermostat calling for heat None 1) None

& three second pause

LED on continuously Control knob turned to the off position Wait for LED to go off before relighting 1) None

Two ﬂashes & three second pause Weak pilot signal detected Verify pilot is lit 1) Pilot assembly

Check thermopile voltage output 2) Gas valve

Check wire connections at gas valve

Three ﬂashes & three second pause Gas valve has not seen temp rise Check temp probe ohms 1) Gas valve cover w/ temp probe

in proper amount of time Verify water is not ﬂowing

Four ﬂashes & three second pause High tank temperature Check temp probe ohms 1) Gas valve cover w/ temp probe

Check water temperature

Five ﬂashes & three second pause Thermostat sensor fault Check temp probe ohms 1) Gas valve cover w/ temp probe

Check water temperature

Six ﬂashes & three second pause Water leak detected by the accessory module Refer to troubleshooting for the 1) Refer to troubleshooting for the

(if installed) accessory module accessory module

Seven ﬂashes & three second pause Gas valve fault Reset gas valve; if problem persists 1) Gas valve

replace gas valve

Eight ﬂashes & three second pause Pilot remains lit while the control knob Check gas pressure 1) Gas valve

is in off position Replace gas valve

NOTE: Check all wire connections

Check gas inlet and manifold gas pressure

Check for grounding connections