sip
New Member
Hi,
I've been using a Bosch tankless water heater for ages with evolutions along the way. My problem is random shut downs and flameouts currently.
My setup is a hybrid setup recommended from Bosch after their first(older) unit was overheating summer water. That is to say, the tankless is calling for 140 degree water, dumping into a Arisiton/Bosch mini-tank unit (2.5gallons), outputting to a watts wax-style mixing valve blending to 118 degrees output.
I'm watching the display go solid on 140 degrees, flame icon is on, as is the warning triangle. Flame goes off, temp flashes at me. You can hear things clicking in the unit but the fan runs continuously. Then it goes solid again and starts the cycle over again. I routinely flush the unit with citric acid, and I recently pulled, and cleaned the copper on the outlet temp sensor. I cannot figure why this is happening.
I'm running 2" black pipe to 2" flexpipe to reducer to the unit. I got the flexpipe super cheap and figured bigger is better. I haven't tested pressures at the unit but I'd bet it's ok.
Anyone have any suggestions?
I've been using a Bosch tankless water heater for ages with evolutions along the way. My problem is random shut downs and flameouts currently.
My setup is a hybrid setup recommended from Bosch after their first(older) unit was overheating summer water. That is to say, the tankless is calling for 140 degree water, dumping into a Arisiton/Bosch mini-tank unit (2.5gallons), outputting to a watts wax-style mixing valve blending to 118 degrees output.
I'm watching the display go solid on 140 degrees, flame icon is on, as is the warning triangle. Flame goes off, temp flashes at me. You can hear things clicking in the unit but the fan runs continuously. Then it goes solid again and starts the cycle over again. I routinely flush the unit with citric acid, and I recently pulled, and cleaned the copper on the outlet temp sensor. I cannot figure why this is happening.
I'm running 2" black pipe to 2" flexpipe to reducer to the unit. I got the flexpipe super cheap and figured bigger is better. I haven't tested pressures at the unit but I'd bet it's ok.
Anyone have any suggestions?
