Why is my tankless hot water heater frozen?

Cold weather can cause frozen pipes and a frozen water heater. If water flows, the tankless water heater has thawed. Carefully inspect the external pipes, internal components, and the plumbing for leaks. If everything looks good, you can OPEN the Gas and Water Valves and turn the Electrical Power ON.

What happens if your hot water heater freezes?

As the water freezes, it will expand, eventually bursting your water heater tank right open. Your cold water feed line, your gas valve, your T/P valve—all of these components and more will break, crack and leak if exposed to frozen water expansion.

How can I troubleshoot my Bosch tankless water heater?

If the tankless water heater develops a problem, troubleshoot it before calling for service. Disconnect the power supply to the water heater before removing the cover. Inspect the water supply. Connect the supply line to the blue inlet on the water heater.

How to get technical support for Bosch water heaters?

Easily identify and troubleshoot your issues with our parts diagrams PDFs. This form is set up for users who have already tried all troubleshooting and still are in need technical support. All labor reimbursement requests must be submitted on the form provided. This handy guide identifies the various locations of product serial numbers.

Which is the most efficient Bosch water heater?

Gas tankless and electric water heaters from Bosch. Enjoy peace of mind and savings with highly-efficient and versatile water heaters from Bosch. Our vision is to provide comfort and peace of mind to our customers with compelling solutions created by passionate people. Do you have any questions or suggestions for improvement?

Why does my tankless water heater get cold?

First off, this is a common tankless problem called a “cold water sandwich”. This problem happens because the heat exchanger (the part that actually heats the water) takes a while to warm up. Before it fully warms up and starts heating the water, you get a short run of cold water.

How does a Bosch tankless hot water heater work?

Bosch tankless water heaters work “on-demand” to produce hot water when needed, for as long as needed. There is no storage tank, so you never have to worry about running out of hot water or waiting for the tank to recover, even during peak use. A tank style hot water heater keeps water hot 24 hours a day, whether it is needed or not.

Easily identify and troubleshoot your issues with our parts diagrams PDFs. This form is set up for users who have already tried all troubleshooting and still are in need technical support. All labor reimbursement requests must be submitted on the form provided. This handy guide identifies the various locations of product serial numbers.

Gas tankless and electric water heaters from Bosch. Enjoy peace of mind and savings with highly-efficient and versatile water heaters from Bosch. Our vision is to provide comfort and peace of mind to our customers with compelling solutions created by passionate people. Do you have any questions or suggestions for improvement?

What to do if your water heater is overloaded?

Your water heater may struggle to supply the hot water needed or shut down altogether if it becomes overloaded. If this happens, you should reduce the demand for hot water by limiting simultaneous applications, and you may want to consider resetting your unit.