activa
New Member
My Takagi TK-Jr was installed in our new home about 7 years ago. It worked fine until recently when it started to shut off occasionally. When it did, the LED was blinking three times, indicating no ignition. I followed the instructions to clean out the heat exchanger (as I had done shortly after we moved into the house because all the plaster dust had clogged it) and also discovered the high limit switch had tripped. Takagi tech support suggested descaling the exchanger, which I did, and I can't believe the amount of crud that came out!
So I figured I'd be in good shape, but now it shuts off if there's too much demand (e.g. when the radiant floor pump is going and a faucet is open). When it does, now the LED blinks FOUR times, indicating either a pressure switch or fan issue. In addition, there's green liquid dripping from the condensate port when I fire the unit up. Also, the fan seems to be "throbbing" or not running smoothly.
Is the pressure switch supposed to detect too much back-pressure when the fan is running? Could the vent be clogged? Not sure what to make of the green liquid.
So I figured I'd be in good shape, but now it shuts off if there's too much demand (e.g. when the radiant floor pump is going and a faucet is open). When it does, now the LED blinks FOUR times, indicating either a pressure switch or fan issue. In addition, there's green liquid dripping from the condensate port when I fire the unit up. Also, the fan seems to be "throbbing" or not running smoothly.
Is the pressure switch supposed to detect too much back-pressure when the fan is running? Could the vent be clogged? Not sure what to make of the green liquid.