New marathon water heater over heats.Replaced thermostats did not fix problem. Rheem troubleshooted but everything checked ok. Any help please.
458121
I would recommend checking the amp draw of the elements, when the thermostats or NOT CALLING (on). If there is any draw at this time, then the element needs to be replaced.
97308
Sounds like you have your answer. I have mine heating a hot tub. Water pressure is a key item but if your regulator is not working properly it will do the same.
690558
These t-stats are only rated to run a single heater. You could be overloading it. Try unhooking one and see if the noise goes away
339790
I had the same problem and was told by their customer service that a bad batch of thermostats was installed in some units. They are sending me a new thermostat, which i guess i will install myself. I also have had two issues now with the on/off switch not working properly. I am sorry I bought this unit.
1411553
Have used these units for years now, normally it means your thermostat is too high, keep turning it down until it stops boiling over, if it doesn't, I would say your thermostat is shot. Have had them repaired for about $60 or just replace it if it is old. Unfortunately 3-5 yrs is about it on any brand you buy.
1983170
Might be something wrong with your unit. Ours heats up in a matter of minutes
1132674
There are two other things to check...first is the timer control assy. If this fails to work you will get no heating. And the next and last would be the heating element. Do you use this alot? How old is your unit? Feel free to send me more questions if you need further help as I'm an power plant engineer by trade.
1638088
I had the same thing happen to me but the right side stopped working. I couldn't change temperatures. I wound up purchasing a new one for $100. I assumed that I had gotten some drywall dust in the thermostat when i was working in the area. I looked at the ribbon cable and everything looked fine.
489188
Before you spend to replace parts, try to fix it yourself. Unscrew the top and take it off so you can see inside. You will have to lift out the water container to get the top off so you can look into it. (After unplugging it, of course!) There are three thermostats, two on the top and one on the side of the boiler. Locate the side one, there is a red button on the top of this thermostat. Press this button. You may not hear a thing, but do it anyway. Now replace the top, plug in and see if it works. This is a reset button--the boiler may have overheated. If it doesn't work, at least you tried! Then you can looks for somewhere to spend your money trying to get it fixed. Will Rancilio do anything for you as far as repairs? One other thing I should mention, if it is heating (feels warm on top on the lid when you touch it), but no water comes out, you may have to prime it. Fill with water, make sure both plastic tubes are to the bottom of the water container, turn on the middle switch of the three on the left, then turn on steam wand handle counter clockwise, now turn on power. (Main switch) In about 15 seconds a stream of water should come out of the wand, so have a glass under there! Now it's ready to be used again.
569274
Gary, I returned the Rheem water heater when I found out 3 dens on it upon delivery. I bought the AO Smith heater and so far we are happy.
2193242
Chip, I had the same problem several times. I finally registered my unit on Broan's website and included my disappointment with the issue. I was contacted the next day by their customer service department with the phone # for their service department. I called them immediately, they pulled up my information and explained that they had identified the problem and it could be easily fixed with a replacement heater and fan element. The original unit did not start fast enough and would burn the thermal fuse, the new motor started faster and therefore the thermal fuse would not blow. The fuse is part of the heater element to prevent overheating. I explained to the rep that it was -7 outside and I didn't feel like going into the attic again to replace the unit. he explained that I could replace the part fromt he inside and it was a matter of 2 screws and a wire harness. It literally took me less than 1 minute to replace the part and it has worked better than the original since. My previous ones only lasted less than 2 weeks. I was very satisfied with Broan which is more than I can say about the big box store I bought it from. The # for the technical support department at 800-637-1453. That should solve the problem.
429666
Make sure the circuit breaker to the water heater is off. loosen/remove all the wire hold down screws to the thermostat. remove thermostat. put in the new one. ONLY thing to know that a video won't show is make sure the tank surface is clean behind the thermostat as these use the tank itself as an extra ground. the new thermostat must be tight to tank. make sure the tank surface is clean and free of rust.
1602747
I believe the two screws on the front of the unit are shutoff valves, try adjusting the RH one.
1436553
I too haven't had any issues. There are heat settings that you can adjust. If it doesn't heat up, you may have a defective unit.
1720681
If your problem is occurring even with the temperature low AND your tank is older, it is possible that the heating coils within the heater are deteriorating. This exposed "hot spots" that boil the water even if your temperature is low. Or...the thermostat is broken and on "high". This has finally happened to mine and I get noise and sputtering even at the lowest setting. Time for a new tank for me. Mine lasted 10 years.
349595
I had a similar issue just the other day. It seemed the water temp wasn't moving. I unplugged it, let the heater sit (in the water) unplugged for about 20 minutes. Then plug it in again. I think the heater needs time to get acclimated to the water temp, before the filament or whatever starts cooking. Give that shot before you start slamming the heater against the wall. = )
1513293
Probably a defective unit. Not holding heat--or not getting hot enough. Ask for a replacement. A reputable company will gladly exchange if within the warranty period