Bosch Hot Water Fault or Error Code E1

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Bosch Hot Water Heater Fault or Error Code E1 Troubleshooting Guide

No hot water from your Bosch continuous flow hot water system? Thankfully, if you opted to have the hot water temperature controller installed with your hot water heater, you can check the digital monitor on the controller for a Bosch fault code.

The hot water temperature controllers (which are optional with your Bosch tankless hot water heater) have a self-diagnostic feature in the event that a fault occurs within the hot water appliance.

Bosch hot water system

These hot water temperature controllers are also a convenient device as they allow you to pre-set your desired hot water temperatures within your home. Meaning that you can have a hotter temperature in the kitchen for washing the dishes and the perfect temperature setting for your shower or bath. All you need to do then is to turn on the hot tap and once the pre-set water level is reached that is where it will stay – no more fiddling with the hot and cold taps to get there.

One of the Bosch error codes that may display on your Bosch controller is fault code E1.

What does the Bosch hot water fault code E1 indicate?

An error code E1 signifies that the hot water temperature sensor has detected overheating within the unit. You can attempt to clear the code by allowing the appliance to cool down and then trying again. If the Bosch fault code E1 remains then you will need to call a qualified service technician to investigate the cause and provide a repair.

Bosch error code E1 troubleshooting

To clear the Bosch error code E1 within minimal fuss and downtime call a Bosch hot water heater repair specialist from Jim’s Plumbing. No matter the time of the day or night we can have a plumber to your location on the same day of your booking, or within the hour* in a gas or plumbing emergency. Our lines are open 24/7, including all public holidays.

Should you require a plumber in Adelaide, Melbourne, Perth, Sydney, Brisbane, or Canberra then the team from Jim’s Plumbing are ready and waiting to assist.

To rectify the Bosch fault code E1 your attending plumber from Jim’s will inspect your hot water heater to find out what is causing the overheating issue. The sensor will be checked to ensure it is positioned correctly. The wire harness will be checked for any loose, damaged or corroded connections leading back to the electronic control unit and the inlet filter screen will be cleaned.  Any damaged parts will be replaced as required.

It is recommended to have your hot water heater serviced according to manufacturer’s instructions. Doing so will provide your appliance with greater longevity and greatly reduce the risk of faults from occurring.

When you call Jim’s Plumbing you can rest assured that you will receive a reliable, prompt and affordable plumbing service with quality workmanship and customer satisfaction guaranteed. We’re here for you 24/7.

No Interest Ever!* Payment Plan Options Available

No Interest Ever!* payment plan options available on hot water heater replacements to help ease any financial stress this burden may cause. If your bosch hot water heater is leaking, or you have no hot water, we can often have a plumber to you within the hour*.

Choosing the Correct Hot Water System

Choosing the correct hot water system can be difficult, as there are so many options to choose from; Click on the links to find out more about these systems.




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Please be advised that we may have additional Bosch Hot Water System models available.

Simply book a plumber online now, or phone 1300 133 509 to book now.

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