Question about Mr Steam Mr. Steam Commercial Steambath System - CU-2500C3

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Mr. Steam CU-750 not working

Water level to high, about 10 years old, water coming out of pop off valve

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CU - 750 - the unit fills, element energizes, it doesn't make steam.
The element was installed two weeks ago. If the element went bad so soon, what could have caused this?

Posted on Mar 01, 2010

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Try replacing the safety valve or look at your pressure controls which may be clogged.

Posted on Dec 23, 2008

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Mr Steam MS Super-1 kW: 10 doesn't generate steam


the first thing the generator should do when you hit the on button is fill. You will hear the water entering the tank. Once the water stops it indicates that the water has reached the water satisfied level, after which you should hear a loud click(your contactor engaging for the heat cycle, newer units will have all three light on the side lit). After this point is you aren't getting any steam after 5 minutes it probably means your heating element may be damaged. It would be best to remove the element at this point from the left side of the unit via 6 bolts and 2 wire leads. Any physical damage on the element such as a pinhole pop, burn mark, melting, or scar will surely prevent the element from heating

Jan 10, 2014 | Mr Steam Power Generators

1 Answer

I have the Mr Steam MS Super 1 T steam unit with the Tempo Plus accessories and auto flush. The unit has worked great for about 2 years but for some reason yesterday the unit light comes on at the...


You would need a multi-meter or voltmeter to trace the power path. Turn on the generator and wait until you hear the water feed solenoid stop. This means the water has reached the satisfied level and the pc board should have sent 24v to engage the contactor. On the actual pc board there is a section label "cont" which is what sends the 24v to the contactor the engage the heating element. Verify that you have 24v on the spade terminals going out to the contactor, if not then you may have a pc board issue. Second possibility is the contactor, if it is recieving 24v and it is not engaging then it's simply a bad contactor. Check the load side of the contactors with the blue wires. Lastly if these two steps check ok, then perform an ohm reading with a multimeter on the actual heating element(with the power off, put your two test leads on the two flathead screws that hold down the blue leads the go to the heating element). If you get an open reading then this may indicate a failed heating element. Pulling the heating element out on the left side panel will confirm any element failure.

Nov 08, 2012 | Mr Steam Ms Super 1e Steam Shower...

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Mr.Steamer Commercial Steambath CU750A temp is to high it is out of control


There are only 3 likely causes. The first and most likely is the room sensor inside the shower. This is a resistive type sensor that communicates the temperature in the room to the controller via ohm ratings. There is an equivalent ohm rating for every degree of temperature it correlates to and that is how the temperature controller knows what temp it is in the room. Often in commercial steam rooms clients tend to spray cold water on the sensor which causes damage and alters the ohm rating to the point where the sensor is relaying incorrect room temps to the controller, causing high or low temperatures. Normally when the room is hot, it causes the alloy metal of the sensor to be hot. When cold water is sprayed on it, it immediately bring down the temp of the alloy and the thermal shock warps the metal causing the resistance values to change. Set your multi-meter to ohms and remove the sensor wires from the back of the controller. You will do your ohm reading on the sensor wires. Check the actual room temperature with a thermometer. At room temp 77 degrees you should be getting 10,000 ohms, at 100 degrees you should get 5827 ohms, and at 120 degrees you should get 3759 ohms. Note as the temp goes up the ohms go down, this should help you determine if your sensor is good. The other possibility is your steam solenoid valve is stuck in the open position. Simply check if there is voltage running to the solenoid. If there is no voltage but the room is filling with steam your solenoid is stuck open and needs to be replaced. The last is the controller, and by process of elimination if the sensor and steam solenoid are good then the controller may be the issue.

Feb 02, 2012 | Mr Steam Mr. Steam Commercial Steambath...

1 Answer

We just moved into a house with a MS150 Mr steam. I turn it on and the display reads 110 for 10 mins then comes up with H2O on the display. What do I have to do? Nothing seems to happen.


Hi my name is Mike with Mr. Steam please give me a call at 1-800-767-8326 and ask for tech support. We will need you model # and SN # that is listed on your unit if you can be by your unit when you call and we will help troubleshoot your unit. In the mean time check the following 1) water is on 2) drain valve closed even if you have a auto flush close manuel valve for testing
Thanks
Mike Nail
Mr. Steam

Sep 18, 2010 | Mr Steam MrSteam MS150E Steam Generator

1 Answer

Steam unit not putting out as much steam as it used to. Takes long time to start putting out any steam?


Occassionally an Autoflush Valve may stick open or partially open. This can happen in hard water areas due to calcium build-up or if debris is caught in the valve. Boiling water will escape to drain and cold make-up water will enter the generator. This results in diminished steam output. Removing the debris should correct his condition. Be sure to follow all precautions as directed in the MrSteam Installation, Operation and Maintenance Manual available from MrSteam or posted online at mrsteam.com. Or call call MrSteam technical Service at 800 767-8326 for assistance.

Jan 20, 2010 | Mr Steam Mr. Steam MS 81500E AutoFlush

2 Answers

Mr. Steam Prr erro


Hi, kindly check the connection of your temperature probe down to the main board maybe its loose.

Oct 03, 2009 | Mr Steam Mr. Steam MS 81500E AutoFlush

1 Answer

Error code Prr on Mr. Steam control unit. Steam generator starts for about 10 seconds, but no steam comes out and error code "Prr" shows on control unit. Any insights?


I had this problem, and checked the connections, emptied the resivour, and refilled it, and it had no effect.
To fix the problem, I ran the regular shower on hot for 10 minutes to warm up the shower chamber. Then, when I pressed the power button on the steam shower, it displayed "110" as normal.
The problem with "Prr" appears to be that the temp sensor is reporting a value out of range. Heating the shower chamber (and therefore sensor) provides a good value to the sensor, which then allows the shower to operate.
Try warming up your sensor by running the shower.

Sep 15, 2009 | Mr Steam Mr. Steam MS 81500E AutoFlush

1 Answer

Steam Shower shuts down immediately now.


probably scale build up from tap water unfiltered. Scale caused by mineral deposits will affect safety systems and auto cut offs in the unit

Sep 13, 2009 | Mr Steam Mr. Steam Commercial Steambath...

1 Answer

Thermasol model 140 does not produce steam


call 1-800-776-0711 and get a EVA# to send unit in for repair.

Jan 10, 2009 | Thermasol Steamshower Generator AF Series...

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