Question about Rheem M206A 206K BTU Pool and Spa Propane Gas Heater
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Posted on Jan 02, 2017
code 21, Check the Air Intake Filter switch, you can press that switch from outside. The filter cover may not be properly seated.
Posted on Feb 12, 2010
Have 2 of these Rheem units in my house. Both had this same error code within 30 days of each other. And my neighbor has 2 units as well - and guess what - 2 months after mine stopped working because of the code - so did theirs. It is not something that can be fixed. It is a manufacturer's defect - and it looks like Rheem has yet another class action on their hands (like the one for the RTG - 74 PVN). They need to do a recall to repace these units.
Posted on May 08, 2010
Trying to get the TA correct before you kill the alge? Leslies diagnosis?
You probally just need to kill the alge before you do anything. Nevermind the TA for now and just add about ten gallons of liquid chlorine. The alge untill you kill it will plug the filter constantly. This will give you the code on the heater and will make the pump run very hot and will hurt the plumbing by shrinking it. This will stop water flo by letting air in also it will leak water at the pump discharge.
A lot of liquid will break the alge as it is unstable, but use a lot.Once you kill the most of the alge then add probally another four gallons and now brugh the whole thing real good. now you can start running again and start with all the stuff they will sell you to adjust the PH and TA. I hope this helps, and good luck.
Posted on Jul 14, 2010
You have a low water pressure problem. Once you clean the baskets and filter you will need to check for plugged lines on your suction and for a clog in your impeller on your pump. If your pump basket is cracked the impeller is the place to start. Reach into the pump, with the basket out go through the hole in the back of the pump pot with some long nose pliers and feel for anything in there. If you can't pull it out with the pliers then break the pump down and see if you can clear it then and run a wire through the veins on the impeller. Then if it still has problems you may have to replace the pressure switch on the heater. This is seldom the problem, it is more of a warning to tell you of the other things that may be wrong.
Posted on Oct 07, 2010
The clock indicator means the firemans switch is open. If you are running the heater remotely and thru a time clock the time clock is still off. Turn all the equipment on including the timer and you should be able to put the heater into remote mode.
If you still have trouble, please comment with your actual model and serial number from inside the heater.
Posted on Nov 05, 2010
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