Bosch Hot Water Fault or Error Code A4

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Bosch Hot Water Heater Fault or Error Code A4 Troubleshooting Guide

Bosch hot water heaters are equipped with advanced technology, owing to Bosch having over 127 years in the industry. When you buy Bosch you are buying a reliable and long lasting hot water heater.

Bosch hot water system

One of the optional features of the Bosch gas continuous flow range of hot water systems is the water temperature controller.

This handy device allows you to pre-set your favourite hot water temperature settings for different areas within your home. Have the ideal shower setting with just one flick of the tap and no more constant back and forth actions with the hot and cold taps to get there.

Hot water scalding is a common occurrence within the home, especially amongst young children, the elderly or mobility impaired. When you have a water temperature controller installed you can rest easy knowing that your water temperature is set to a safe level, greatly reducing the risk of burns.

Another advanced feature of the water temperature controller is its convenient ability to be able to self-diagnose any faults that occur within the unit. If a fault is detected the digital monitor of the controller will flash an error code.  This error codes pinpoints exactly what is wrong within the appliance allowing for a fast repair.

One of the Bosch hot water fault codes that may be displayed is code A4.

What does the Bosch error code A4 mean?

If the Bosch fault code A4 is flashing on the status monitor of your controller this indicates a faulty air temperature sensor. The air temperature sensor is a safety device within the appliance to ensure overheating does not occur. In most cases your Bosch hot water heater will cease to operate until the error code A4 is repaired and cleared.

Bosch hot water fault code A4 troubleshooting

To resolve the A4 error code you will need to engage the services of a fully qualified technician. For a Bosch hot water heater repair expert call your local plumber from Jim’s Plumbing.

Whether you reside in Adelaide, Melbourne, Perth, Sydney, Brisbane or Canberra Jim’s have a local plumber available near you.

We cover all metropolitan areas 24 hours a day, 7 days a week, including all public holidays.

When you call Jim’s Plumbing to repair your A4 Bosch fault code you are guaranteed a same day service. Need a plumber urgently? No worries – in a gas or plumbing emergency we strive to have a fully qualified plumber to your location within the hour* of your call.

To rectify the Bosch A4 error code your attending Jim’s plumber will check the systems sensor wiring for any loose or damaged connections leading back to the PC board. The sensor will be checked for any scale build-up and cleaned if found. If the fault code A4 remains then the last step will be to replace the temperature sensor.

Having your hot water heater serviced as per manufacturers’ instructions will greatly reduce the risk of faults occurring with the appliance, as well as keeping it operating an optimum efficiency. If you can’t remember the last time your hot water system was serviced then just ask your attending Jim’s plumber about our preventative maintenance services.

Clear your Bosch A4 error code on the same day as your booking when you call Jim’s Plumbing on 1300 133 509. We’re here for you 24/7.

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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*.

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