Specifications

TM013 Vulcan Electric Service Instructions REV: D
D.O.I.: 05/09
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17
Twin Element – Lower Element
YES
NO
NO
YES
NO
YES
YES
YES
YES
Twin Element
Lower Element Diagnostic
Install the bottom element
correctly and reset the ECO
Slide out the thermostat and allow
the contact base to cool.
NO
Replace bottom thermostat
Break in wiring loom.
Locate and repair
NO
YES
NO Replace bottom element
Are the bottom thermostat
ECO contacts closed?
ECO TEST 1
Is the bottom element
installed in the correct
orientation?
Are the bottom thermostat
contacts closed?
THERMOSTAT TEST 1
Is the tank water 8°C less
than the thermostat
temperature setting?
Does the bottom element
have the correct resistance?
ELEMENT TEST
Is the overall resistance of the
water heater correct?
RESISTANCE TEST
Replace bottom thermostat
Did the bottom thermostat
contacts closed?
THERMOSTAT TEST 1
Water heater electrically ok.
Replace bottom thermostatNO