State Tankless Water Heater help please!

[Jared Kendrick]

I have a State tankless propane water heater model # GAX 199P. It was made around 2007 and I was told it was before State made their own heaters but don't know the manufacturer, though I know it's Japanese. Water heater worked fine since we bought the house 6 months ago though it seemed it would occasionally surge temperature down a little while taking a shower. The other day it just quit. With hot running in house it does nothing. No blower, no flame nothing. I know it is getting power to the control board because when I unplugged a line the red light came on. I took the filter out of the incoming line and it was clear. We have soft water and we don't have much problem with scale or corrosion with our water. It is making just a little heat but it seems to be from an electrical heater (maybe anti-freeze) in heat exchanger. I called State's tech line and was told it might be the flow sensor coming into the unit since the blower motor isn't even running but they weren't sure. Any suggestions or anything pointing me in a direction would be greatly appreciated. I cannot afford another water heater now and I think I can fix this one if I can figure out what's going on. Thank you so much for the help!

 

[DonL]

Water heater worked fine since we bought the house 6 months ago though it seemed it would occasionally surge temperature down a little while taking a shower.

You normally need to do preventive maintenance on those.

Is there no Drawing on the inside of the cover ? Is the Fuse good ? Looks like a connector just hanging ? Hard to tell from here.

Is your gas pressure good ?

Good Luck.

 

[Sponsor]

 

[Jared Kendrick]

You normally need to do preventive maintenance on those.

Is there no Drawing on the inside of the cover ? Is the Fuse good ? Looks like a connector just hanging ? Hard to tell from here.

Is your gas pressure good ?

Good Luck.

Thanks Don. Well, Saturday my wife remembered she bought an insurance policy that covered it when we bought the house. Duh, at least she's good looking I guess. Thanks anyway.

 

[Dj2]

Examine the circuit board, it could be faulty. I would remove it and look on its back side.

 

[WJcandee]

Well, Saturday my wife remembered she bought an insurance policy that covered it when we bought the house.

Waiting a day to tell you just made you appreciate her wisdom in buying the policy that much more.

AND she's good looking! Sounds like a keeper.

 

[Dana]

Based on the shape of the exhaust vent at the top it looks like a Takagi TK1 or TK2, but the plumbing connections are in a different place, possibly a TK-Jr? The exploded diagram on p.25 in the TK2 manual (p.24 o the TK-JR) also has a pretty similar arrangement of the major components. It's a bit hard to tell- there have been many revisions and models, but it has the look/feel of a Takagi.

Are there any LED blinky-blinky indicating an error code? (See p. 16 of the TK2 manual, p17 of the TK-Jr manual.)

 

[Jared Kendrick]

Waiting a day to tell you just made you appreciate her wisdom in buying the policy that much more.

AND she's good looking! Sounds like a keeper.

Ya, she's a keeper.