Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: how to reset takagi k4
Document: There is never a good time when you have an infant to go into a crawlspace and reset an electronic device.In reviewing the return policy for this item, it is not nearly as generous as other smaller items we have purchased. It is not returnable for a full refund past about 6 weeks after purchase, and I would need to pay return shipping. We have invested hundreds of dollars to have this installed.
But over ten years later, they have been absolutely trouble free. Only one had an issue, and the warranty came through and they replaced it at their cost. I thought Rheem was supposed to be the bad US model, but it turned out very differently.Do I need to come to your house right now and pour you a beer and talk you out of it? I should, because that's how awful Takagi has been to deal with.
These Takagi water heaters are nothing but a big pile of s***. I've had 2 of these so far in a rental house that I am a partner in. Each one lasted about a year and a half and started having problems with each unit after about 1 year, these were both brand new units I am talking about here. I called Takagi's "authorized" technician for my area when I had problems with unit #1.
We bought the TK4 in March (new home owner) and the high limit (heat) bypass switch failed yesterday (end of July). Warranty, right? Takagi only pays for parts. We're out close to $400 because we had to pay labor costs for someone to come out and figure out the problem and then come back to install the switch after Takagi ships it. It's great deal for plumbers but not for homeowners. We're very disappointed.
The Takagi tankless water heater is a great product. This is the third one to be installed in our house. The first one lasted for 11 years. We were hoping for 5 or 6 years because Oklahoma has hard water so 11 years was great. The second one is a smaller one that runs one shower and the kitchen. No problems with. This third one is replacing the first one and it is the same size as the first one giving us about 8 gallons of hot water a minute.
He suggested pulling out the circuit board and sending it back to the factory for repair. He said I would get it back "good as new" in about 3 weeks. Keep in mind that this is a rental house with a family living in it. I had no choice except to have the unit replaced with a new Takagi unit at a cost of around $1200. I thought the problems were solved.Almost exactly one year later, the tennants call to say they are having problems with unit #2.
When it worked, it was fine. But the maintenance on these things and the WORST CUSTOMER SUPPORT EVER with guys with the heaviest unintelligible accents ever, who refuse to honor a single darned iota of the warranty makes this an unmitigated disaster and piece of garbage. I cannot stress this enough: AVOID AVOID AVOID.I have installed about a dozen of these over the years, and only had two work properly for more than five years. And when they break, they are never ever fixable.
We purchased this water heater in December, 2012 and had it installed. As of March, 2013 we have lost hot water 11 times. We had the gas meter in our home made bigger twice by the gas company since one theory was that more gas was needed to fuel it. This was unsuccessful. We had a more expensive vent installed from the crawl space where the hot water is installed to the outside, this was unsuccessful.
This is what I need for entire of my life. Before I bought this product, I didn't get enough hot water when I having a guest . After I bought this product, I really get enough hot water to a bath tub and shower no matter how much I used hot water before taking a bath. It is an endless.
These things are unrepairable, so you have to replace them if you have any problems with them or you will have no hot water for several weeks. Their so called "factory authorized technicians" are nothing but plumbers who don't know a thing about how to actually fix one of them on the spot. Don't waste your time with these piles of junk they are garbage.
Answer: yes