Bosch Hot Water Fault or Error Code C1

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Bosch Hot Water Heater Fault or Error Code C1 Troubleshooting Guide

Bosch is one of the leading manufacturers of continuous flow hot water systems. They provide a long lasting and reliable hot water heater backed by extremely high warranties.

Bosch hot water system

With over 127 years in the hot water industry, it’s easy to see why Bosch is one of Australia’s favourite go to brands for heating your water.

With so many years of experience comes great technological advancement and Bosch offers the highest range of energy efficient gas continuous flow hot water systems on the market today. One of the stand-out features of the Bosch hot water range is that the systems are available with an optional water temperature remote controller.

These hot water temperature controllers allow you to pre-set your desired hot water setting. This function allows you to only need to turn on the hot water tap, rather than constantly fiddling with both the hot and cold taps, to reach your favourite water temperature. Providing convenience at your fingertips!

This is also an excellent safety feature as it greatly reduces the risk of hot water scalding to young children, the elderly or the mobility impaired.

Another advanced feature of the Bosch hot water temperature controllers is their ability to self-diagnose any fault that may occur within the hot water system. If there is any issue a fault code will flash on the remote controller’s monitor. This feature allows for a prompt repair as you can easily see where the problem lies by the fault code that is displayed.

One of the Bosch codes that may blink on the digital monitor is error code C1.

What does the Bosch hot water error code C1 mean?

If the Bosch error code C1 is blinking on your digital monitor this indicates that there is insufficient air flow to allow the hot water heater to start up. Fault code C1 will display if your Bosch tankless hot water heater uses a combustion fan to allow for the combustion process to happen. With an error code C1 you will also have no hot water.

Bosh fault code C1 repair

You can attempt to clear the Bosch fault code C1 yourself by turning a hot water tap on to its fullest extent and then turning it off. You can also try turning the power off to the hot water system and then turning on again. If error code C1 remains then you will need to call in a qualified plumbing professional.

For a fast resolve of the Bosch code C1 on your continuous flow hot water system call the friendly Bosch hot water repair experts from Jim’s Plumbing. We will send a local plumber to your location on the same day of your booking, or within the hour* in a plumbing emergency – such as no hot water. Your hot water heater will be investigated to find the cause of the insufficient air intake and will be promptly repaired with minimal downtime to your day.

For a local plumber in Adelaide, Melbourne, Perth, Sydney, Brisbane or Canberra who is available 24 hours a day, 7 days a week, including all public holidays call Jim’s Plumbing on 1300 133 509.

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.

*NO INTEREST EVER!* PAYMENT PLAN, “Fees, terms and conditions apply”.

No Interest Ever!* Payment Plan offered through Certegy Ezi-Pay Express. No Interest Ever on your hot water heater replacement or new supply and installation, gas service, water service or drain replacement. Conditions apply.

Information on this page is subject to change. Commercial hot water systems also available on enquiry.

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