Question about Rinnai Water Heaters
I've gas and water pressure to the unit. no water from unit. could it be water flow control device fault or water flow sensor fault? or something else? any ideas?
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Posted on Jan 02, 2017
Its A Possibility The Left Over Water In The Hot Is Frozen. If Your Line Is Exposed Outside Somewhere It Can Easily Freeze Up. Turn On The Hot Water Everywhere In The House And If Accessible Check The Lines To See Where The Warmth Ends. You Can Leave One Off Over Night In Hopes That It Will Eventually Defrost.
Posted on Jan 16, 2009
II would think that the unit is going out on hil imit because there is not enough psi on the water coming in.Is this unit on well water or city?If it on well water you have run some cleaner in it every six months.L on the side of the heat or inside and there a toll free number to call talk to a tech.
Posted on Mar 15, 2009
If you aren't getting any error codes, then the heater is probably doing its job. Your problem is probably somewhere in your plumbing system. The most common reason you get this sort of problem is due to cold water mixing in the hot water system. There are a number of causes for a "cross connection" :
-Faulty check valve
-Missing check valve on reciculation return line
-Faulty shower cartridge
-Thermostatic mixing valve set too low
-Faulty thermostatic mixing valve
-Faulty anti-scald valve
The easiest way to confirm a cross connection is to: 1) shutoff the cold water entering the tankless heater 2) open hot water valves around the house. If you still have water flowing at your hot water fixtures, then you have a cross connection.
Posted on Aug 01, 2010
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