110 volt water heater switch does no light.
Taint obvious how to check the bulb! Suggestions very welcome. Worked yesterday but we have been on seattle lousy bumpy roads today. Thanks all Attwood water heater in 2006 itasca 29r
Forum Discussion
If it's an Atwood combo water heater it has a dual ON/OFF Panel with Light in between switches.
Like this
That Light is a 'Fault' indicator light
It will come on when heating with propane IF:
Propane fails to light
Propane normal t-stat fails to open and the ECO (high temp t-stat) opens
It will also come on when heating with electric IF:
ECO (high temp t-stat) opens cause normal t-stat failed
Atwood uses the same set of t-stats for both electric and propane operation
Normal pre-set to Open at 140*F (re-closes when temp drops to 110*F)
ECO pre-set to Open at 180*F (re-closes when temp drops below 150*F)
IF ECO has opened.fault light ON water heater will not reheat again until fault light is cleared (water temp low enough/problem with propane not lighting) and ON/OFF switch turned OFF then back ON
Sounds like you need a new normal t-stat.
Normal & ECO t-stats are sold together as a set ($15-$18) and should change both.
Electric heating element is feed from a 110V AC circuit breaker..........but DC power is used to activate the 110V AC to element.
DC power from DC Dist. Panel (fuse) goes to ON/OFF switch (both electric and gas) then to a relay. When relay closes AC power then goes from Circuit breaker to element.
Electric element and relay are on backside of water heater tank (inside rv) under protective cover.
T-stat and ECO are in outside compartment under a foam cover.
Brown wires are on normal temp t-stat
Red wires on ECO
Also should be a thermo-fuse (brown wire with clear plastic tube---goes from circuit board to t-stat)
It melts if gas flame blows back out of combustion chamber (190*F). One time device-----cuts DC power
Like this
That Light is a 'Fault' indicator light
It will come on when heating with propane IF:
Propane fails to light
Propane normal t-stat fails to open and the ECO (high temp t-stat) opens
It will also come on when heating with electric IF:
ECO (high temp t-stat) opens cause normal t-stat failed
Atwood uses the same set of t-stats for both electric and propane operation
Normal pre-set to Open at 140*F (re-closes when temp drops to 110*F)
ECO pre-set to Open at 180*F (re-closes when temp drops below 150*F)
IF ECO has opened.fault light ON water heater will not reheat again until fault light is cleared (water temp low enough/problem with propane not lighting) and ON/OFF switch turned OFF then back ON
Sounds like you need a new normal t-stat.
Normal & ECO t-stats are sold together as a set ($15-$18) and should change both.
Electric heating element is feed from a 110V AC circuit breaker..........but DC power is used to activate the 110V AC to element.
DC power from DC Dist. Panel (fuse) goes to ON/OFF switch (both electric and gas) then to a relay. When relay closes AC power then goes from Circuit breaker to element.
Electric element and relay are on backside of water heater tank (inside rv) under protective cover.
T-stat and ECO are in outside compartment under a foam cover.
Brown wires are on normal temp t-stat
Red wires on ECO
Also should be a thermo-fuse (brown wire with clear plastic tube---goes from circuit board to t-stat)
It melts if gas flame blows back out of combustion chamber (190*F). One time device-----cuts DC power
