Bosch Hot Water Fault or Error Code 93

We can to be with you
Within the hour
Pay No More
After Hours
Interest Free Options **
$0 Deposit Required

Bosch Hot Water Heater Fault or Error Code 93 Troubleshooting Guide

Bosch hot water systems are highly economical, durable and efficient hot water heaters complete with over 127 years in advanced technology built in.

Bosch hot water system

The Bosch hot water heaters come with an optional extra water temperature controller which is an excellent feature for both practicality and safety.

The Bosch water temperature controllers allow you to pre-set your desired hot water temperature for different areas within your home. This provides convenience in you only needing to turn on the hot tap and once your preferred temperature has been reached that is where it will stay until you turn the tap off.

No more fiddling with both the hot and cold taps and you have the added peace of mind that hot water scalding accidents have been greatly reduced.

These hot water temperature controllers have a digital status monitor and if there is ever a fault with your hot water system a Bosch error code will display on the monitor.

Each error code refers to a different fault that has occurred with the hot water system.

If you operate a Bosch Highflow Condensing gas hot water heater one of the fault codes that you may come across is Bosch error code 93.

What does the Bosch hot water error code 93 indicate?

If a fault code 93 displays on the controller of your Bosch Highflow Condensing hot water heater this means that the neutraliser within the hot water heater has reached the end of its service life and requires a replacement.

A neutraliser is present in extremely efficient condensing hot water heaters to neutralise the highly acidic condensate produced from the unit, prior to it being discharged.

If a Bosch hot water error code 93 is blinking on your hot water temperature controller the system will cease to operate until the neutraliser has been replaced, as this is an extremely important safety feature.

Troubleshooting the Bosch fault code 93 on your hot water heater

To replace the neutraliser you will require the services of a fully qualified technician.

You should never attempt DIY repairs on a hot water heater, unless you are qualified to do so, it is illegal and highly dangerous.

Take the stress away and have your Bosch error code 93 rectified and the neutraliser replaced on the same day of your booking by calling the experts from Jim’s Plumbing.

At Jim’s Plumbing we never leave you waiting days for your plumber to arrive.

When you make your booking you will be given an accurate time of arrival for the same day, or if it is a gas or plumbing emergency we strive to be at your location within only an hour* of your call.

No matter what time, or what day of the week it is that you need a plumber – we are available 24/7, including all public holidays.

If you need a local plumber in Adelaide, Melbourne, Perth, Sydney, Brisbane or Canberra then call Jim’s Plumbing for a fast, reliable and affordable resolve of the Bosch fault code 93 on your hot water heater, 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.




Heat Pump


Gas boosted solar

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.

*Conditions apply.