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Is there no water coming out of the hot water faucet or is there water but it's just not hot?
Water runs out of all taps in the house at cold temps, but when you attempt to adjust toward warm or hot temps, water stops.
You only have single handle faucets?
In the sinks as well as the shower
Dual in the bathroom sinks. Single on kitchen sink. Single in both showers.
So when you turn on just the hot side in the sinks nothing comes out?
Sounds like frozen pipes
You could try thawing the pipes with a hair dryer on high
as long as the area where the pipes were exposed to freezing temps is now above freezing
Called Rinnai Tankless customer service and they think it is the exterior pipes that lead to and from the rinnai unit.
Sounds probable to me
I'm in Charleston, SC. I think we are creeping toward 32 but not there until the afternoon.
Should I be worried about cracked pipes.
Hard to say, if you plan on leaving the house turn the water off at the main shut off
In the mean time leave a hot water faucet open
one that will be noticed if the water starts to flow on its own
You could try the hair dryer but if air temps are below freezing where the pipes are thawing will be difficult
I'm not leaving. If I go the hairdryer route, I should leave the water on, correct?? Also, is the main shut off down at the street?
The main shut off inside the house, yes leave the water on while you are there
Okay. Will insulating those pipes prevent this in the future? Can I do that myself or is it advisable to get a professional to examine the situation? Of course, I'd prefer the to do it myself, but I def want to resolve the issue. I checked the neighbors house, and we are only missing about a foot of insulation. Is that enough to cause this?
Yes any missing insulation could cause this if the weather conditions are right. You might want to call in a pro since they will be able to resolve this quickly. There is some risk of damaging your Rinnai if the temp readings are inaccurate
Do you mean the hairdryer route could damage the Rinnai? I didn't think you meant that, but want to be sure.
No I meant if the Rinnai drops below freezing it could be damaged
Okay I see. Well thanks for the advice. Hitting accept now.
Is that all that needs to be done?
That's the standard procedure. You leave a faucet open to take the pressure off the line and it will also let you know when the pipe thaws.
Okay. Great and thanks for your help.
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