Questions & Answers for: marathon water heater thermostat adjustment

...water heater on. The breaker is on. It's a big Marathon. We have been here for over a day and it's not making hot water. The system is about 8 years old and in good condition. We think the guy who ...

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Question about MSR50245 Marathon Electric Water Heater 50 Gal

1 Answer

...water temperature on a Marathon 85 gallon electric water heater? I don't see any visible temperature control settings. The temperature is controlled on the thermostats in the tank. They are under the ...

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Question about MR105245 Marathon Electric Water Heater 105 Gal

1 Answer

...Marathon is 240Volt water heater. Thermostats turn off one leg of the 240Volt circuit, so elements and themostats will always test for 120volts. You removed wires off elements and tested each for ...

Question about MR105245 Marathon Electric Water Heater 105 Gal

1 Answer

marathon water heater? Thermostat is probably bad. Has gone out of calibration. Replace both upper and lower thermostats for $25 from local hardware store, takes about 20 minutes, turn off power, take

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