20 Most Recent Bosch & Tankless LP Hot Water Heater - Page 7 Questions & Answers

I think yo would just turn the gas down

That is normal. The flame stays the same but will burn longer making the water hotter.

The igniter is waiting for gas to get to it. if you did not bread the air out of the gas line it will take some time for the gas to get there.

http://www.bosch-climate.us/support-center/downloads/

You have a bad water temp sensor.

If it has some age on it replace the igniter.

if it is a gas power water heater the pilot is powered by a very low pressured gas line. since its pressure is very low it gets clogged quite easily due to external dirt or grit or from dirt carried by the gas. cleaning of the gas nozzle would give you problem free pilot for a long time to come.

how is heating element ? Wasit on with no water running thru it. Does it have a reset?

Check wires coming from cold water line valve. Make sure incoming water is above freezing

usal problem escpecialy on the farthes spout because it has to heat up the water from the heater to that tap with a tankles u can put a seprate circulating system which requeris another smaller tankles unit or elctric unit to heat and ciculating pump and run a line all the way to ur farthes tap which keeps constant hot water to everything but all of this is farily expensive alot of times most people usaly deal with it if u look more into it email me and i can give u a detaled instructions.

will still be under warrent call supplier

When a tankless is installed, they are usually set up with a recirc. Theis keeps the water continuously heating to some degree.
When a tankless is installed into a home it has nothing to heat the water that is sitting in the pipe from its faucet to its heat source. Now as soon as you turn on the faucet, you have to let all that cold water run out until the newly heated water comes out from when you started the faucet.
You could measure the volume until heat and it will be pretty much the same every time for a given faucet.

The fact that your faucets are low flo is only part of the factor involving time it takes to get hot water. Another factor is volume. The diameter of your pipes makes a difference. You can remove the low flo restrictor from the faucet farthest away to speed up the process at least a little.

it sounds like the flame sensor is dirty or faulty. when the pilot lights the flame sensor rod recognises the flame to allow the main gas valve to open and ignite the burners. you can clean the flame sensor with some steel wool or sandcloth

hi

could be gas valve. check that the fan and pump run.if not could be an air flow switch.

hopes this guides you the wright way

I'm experiencing the samething it's been installed 3 years and christmas day nothing. Please help.

Sorry to read about your problem, I hope this helps you out.

bosch direct is the only way and contact bosch for service

I tried to help you. Please help me and Rate/Vote on my response, thanks and good luck

Happy Holidays to you too.
You will also need to change the
Burner
Nozzle
Pilot injector and the
Gas regulator in order for the unit to function properly. You might try running a ad on CraigsList. If you cannot find one for free, you may end up spending more money then the unit is worth. You could also put the word out with local plumbing companies that replace these heaters to look out for a used one. Some one out there has to have one those laying around.

if you can disconnect the main line going to the heater easily try attaching a smaller line that might provide enough pressure. this is just an idea if its easy to do try it. how much pressure do you need?? to run the heater.