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Heat Pump Fault Finder AU

Verified codeset result

The manufacturer documentation publishes fault code E04 for the Compress 3000 DW FO controller display, mapped to the affected Bosch models listed below.

Fault code E04

Bosch Compress 3000 DW FO controller display: E04

Compress 3000 DW FO controller display

Bosch logo (for identification)

Last verified from the captured official source review.

E04 meaning for this display codeset

This page isolates Bosch fault code E04 for the Compress 3000 DW FO controller display. It does not combine the Bosch E04 meaning with another controller or codeset.

Before applying the Bosch E04 meaning, confirm the affected model uses the Compress 3000 DW FO controller display. In that controller namespace, E04 means documented as temperature in storage tank ≥ 80 °c.

The Bosch Compress 3000 DW FO Installation and Operating Instructions source anchor on page 41 supports this Bosch E04 record for the Compress 3000 DW FO controller display.

The permanent source key bosch-compress-3000-hp270-1-display E04 keeps the bosch-compress-3000-hp270-1-display E04 controller/code pairing distinct in publication.

What the documentation says

Documented as Temperature in storage tank ≥ 80 °C.

This is a paraphrase of the manufacturer’s documentation. A licensed technician confirms the actual cause.

Severity

Red — urgent safety concern

Red means the documented fault involves safety-critical, leak, electrical, refrigerant, lockout or overheat language.

Source-grounded diagnosis context

Documented causes

Repair, replacement and warranty context

Prioritise safety before the repair-or-replace decision

A red classification warrants urgent assessment by an appropriately licensed professional. The code alone cannot establish whether a component repair or full system replacement is proportionate.

This brand has a verified current Australian support route, so check warranty coverage with the manufacturer before authorising paid repair or replacement work.

Affected models

Every model mapped to this codeset is listed with the evidence match state used by this site.

Related codes from this codeset

These codes appear in the same documented controller or display codeset.

  • E01

    Documented as Fault in the top storage tank temperature sensor.

  • E02

    Documented as Fault in the bottom storage tank temperature sensor.

  • E03

    Documented as Fault in the temperature sensor at the air inlet.

  • E09

    Documented as Incorrect system purging.

  • E10

    Documented as Heating element faulty.

  • E11

    Documented as Fault in the fan.

Choose the right next step

Warranty or local repair?

Answer both questions. If the unit may be covered, we will direct you to the manufacturer first. Your answers stay in this page unless you submit a repair request.

Choose both answers to see the recommended route.

Official source

Where this result comes from

Bosch Home Comfort. Bosch Compress 3000 DW FO Installation and Operating Instructions, PDF page 41. Retrieved .

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