Bosch Hot Water Fault or Error Code F9

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Bosch Hot Water Heater Fault or Error Code F9 Troubleshooting Guide

Bosch fault code F9 display

Bosch offer the largest range of continuous flow hot water heaters on the Australian market today and are a popular choice for your home or office water heating.

Bosch hot water system

Their highly efficient hot water heaters are reliable, durable and backed by extremely generous warranties.

When you choose Bosch you can trust that you are choosing a top quality hot water heater backed by over 127 years of technological advancement.

One of the advanced features of the Bosch continuous flow hot water heater range is their optional hot water temperature controllers. These controllers allow you to pre-set your preferred hot water temperature for different wet areas within your home, providing the ease of only needing to turn on the hot tap rather than mixing the hot and cold taps. The bath fill function allows for the water flow to automatically shut off once the desired bath level has been reached and an assistance call button is available.

With Bosch being a smart hot water heater it will also display a Bosch error code on the temperature controller monitor should a fault occur within the system.

One of the codes that may display is the Bosch fault code F9.

What does the error code F9 on my Bosch hot water heater mean?

A F9 error display indicates that a safety solenoid valve may have become disconnected within your Bosch hot water heater.

A solenoid valve controls the flow of gas or liquid within the hot water unit. It operates by opening or closing a slit within a valve body to let in or stop the flow through the valve via the use of an attached plunger.

Usually your hot water heater will cease to operate in the event of a Bosch error code F9 display until the F9 fault has been rectified and cleared.

How to clear the Bosch F9 fault code on my hot water heater

To resolve the F9 error display on your Bosch hot water system you will need to engage the services of a fully qualified technician as the unit will need to be opened and the cause of the disconnected solenoid valve determined.

For a fast, affordable and trustworthy repair to your Bosch F9 error code call the Bosch hot water heater professionals from Jim’s Plumbing.

No matter if you are in Adelaide, Melbourne, Perth, Sydney, Brisbane or Canberra we can have a local plumber to your door on the same day of your plumber booking covering all metropolitan areas.

In a hot water plumbing emergency, such as no hot water, you can expect a plumber from Jim’s to be pulling into your driveway within only an hour* of your call – 24 hours a day, 7 days a week, including all public holidays.

Your attending Jim’s plumber will fully inspect your hot water heater to resolve and repair the Bosch F9 error code getting your hot water back running hot again before you know it.

When it comes to hot water heater repairs, replacements or new installations there’s none better than the team from Jim’s Plumbing – available 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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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.

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