Bosch Hot Water Fault or Error Code E9

Bosch Hot Water Heater Fault or Error Code E9 Troubleshooting Guide

Bosch continuous flow hot water systems are equipped with an advanced PC board which allows for a self-fault diagnosis to be performed should something go amiss with the appliance.

Bosch hot water system

Your Bosch tankless hot water unit is a highly innovative appliance able to control and monitor its own performance and efficiency.

Should a problem occur the PC board will allow for a fault code to display on the digital monitor of the hot water temperature controller.

The hot water temperature controllers are an optional feature available with the Bosch hot water range.

They are a convenient option that allows you to pre-set your desired hot water temperature which is also a handy safety feature in greatly reducing the risk of hot water scalding to young children, the elderly or the mobility impaired.

The advanced fault code display also provides for a prompt resolve in the event of any system faults.

One of the error codes that you may come across is the Bosch fault code E9.

What does a fault code E9 signify on my Bosch hot water heater?

The E9 error code indicates that the thermal fuse within the system has been activated. The cutting-edge technology that has gone into manufacturing your reliable Bosch hot water heater includes temperature sensors. The temperature sensors stop the appliance from overheating and controls the maximum temperature settings allowed for the heat exchanger (this heats your water as it passes through the system to reach your tap).

The thermal fuse acts as a safety device and if the system overheats the thermal fuse is activated and the gas supply is shut off, which will in turn display a Bosch E9 fault code on your temperature controller’s digital monitor.

Why would the Bosch E9 error code be showing on my hot water heater?

There are a number of reasons that could cause the thermal fuse within your Bosch continuous flow hot water heater to be activated to display the E9 fault code:

  • Blocked vents could cause heat to build up within the appliance
  • The system may detect flammable vapours near the appliance, such as gasoline or paint
  • The wrong gas type being used to fuel the hot water heater
  • A low flow detected inside the heat exchanger
  • Foreign blockages within the combustion chamber
  • Cracks on the heat exchanger
  • Scale build up
  • Blocked heat exchanger
  • Dirty sensor

Continuous flow Bosch E9 hot water fault code troubleshooting

To clear the E9 error code display on your Bosch hot water heater you will require the services of a fully qualified technician.

For a reliable and prompt repair call the Bosch hot water heater experts from Jim’s Plumbing.

The highly skilled, experienced and fully qualified plumbers from Jim’s are available to attend to your location on the same day of your booking, or within the hour* in a hot water emergency, such as no hot water.

We have a local plumber near you available 24 hours a day, 7 days a week. We even have plumbers available on public holidays.

We are a national team covering all metropolitan areas of Adelaide, Melbourne, Perth, Sydney, Brisbane and Canberra. We will have your Bosch fault code E9 cleared in no time at all and your hot water system running at optimum performance once more.

Call the specialists from Jim’s Plumbing, anytime of the day or night, on 1300 133 509 for an affordable, trustworthy and reliable plumber that can assist you TODAY!

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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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