Question posted under marathon electric water heater.
Marathon is 240Volt dual element non-simultaneous water heater.
Non-simultaneous means that upper part of tank has to reach temperature before power is sent to lower thermostat and element. So if upper element is bad, then water heater has no hot water.
http://waterheatertimer.org/Replace-anode-rod.html#audibleBW
1) You need to by-pass upper element without by-passing upper thermostat.
2) You should never by-pass upper thermostat because it has ECO-reset protection.
http://waterheatertimer.org/How-water-heater-thermostats-work.html
3) Open following link for image of wiring:
http://waterheatertimer.org/images/Marathon-wiring-700.jpg
4) Take photo of your wiring in case color code is different on your specific model
5) Look at upper thermostat.
Remove yellow wire from terminal 2 on upper thermostat, and cap off temporarily.
Remove red wire from terminal 4 on upper thermostat, and move it to terminal 2 on upper thermostat.
6) For more effective operation, look at lower thermostat.
Remove black wire from lower thermostat terminal 1 and move wire to terminal 2 on lower thermostat.
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Let me add clarification: The upper thermostat is a single part, but the device is actually 2 parts. The top part of upper thermostat is high limit and has red reset button or ECO. The bottom part of upper thermostat is the actual thermostat. When answer given above refers to terminal 2 and 4 on upper thermostat, it means the bottom part of upper thermostat. Confused: Open following link. be careful, fixya site sometimes adds space at end of link. Space has to be removed for link to work:http://waterheatertimer.org/How-water-he...
Thank you so much!!!! -7 degrees, broken pipes,broken upper element. We now have HOT WATER! I added a light switch in between lower element until part arrives. Can switch it off in a hurry if I have too. LOL
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Try just unplugging the bad element. Make sure you cover the exposed leads so they don't short out.
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