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Heat Pump Fault Finder AU

Verified codeset result

The manufacturer documentation publishes fault code E04 for the QDC0030PD-11 digital controller display, mapped to the affected Quantum models listed below.

Fault code E04

Quantum QDC0030PD-11 digital controller display: E04

QDC0030PD-11 digital controller display

Quantum logo (for identification)

Last verified from the captured official source review.

E04 meaning for this display codeset

This page isolates Quantum fault code E04 for the QDC0030PD-11 digital controller display. It does not combine the Quantum E04 meaning with another controller or codeset.

Before applying the Quantum E04 meaning, confirm the affected model uses the QDC0030PD-11 digital controller display. In that controller namespace, E04 means documented as compressor overload protection.

The Quantum Domestic Heat Pump Owner Manual QDC0030PD-11 source anchor on page 26 supports this Quantum E04 record for the QDC0030PD-11 digital controller display.

The permanent source key quantum-qdc0030pd-11-display E04 keeps the quantum-qdc0030pd-11-display E04 controller/code pairing distinct in publication.

What the documentation says

Documented as compressor overload protection.

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

Severity

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Source-grounded diagnosis context

Documented causes

Repair, replacement and warranty context

Start with diagnosis, then compare repair and replacement

An amber classification usually calls for a diagnosis and repair quote, not automatic replacement. Compare parts availability, repair cost and system age only after the fault has been confirmed by an appropriately licensed professional.

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 an open or shorted water-temperature sensor circuit.

  • E02

    Documented as an open or shorted compressor-temperature sensor circuit.

  • E03

    Documented as an open or shorted evaporator-temperature sensor circuit.

  • E05

    Documented as compressor overheat protection above the H95 setting.

  • E06

    Documented as compressor overheat protection above 105 °C.

  • E08

    Documented as an open or shorted optional ambient-temperature sensor circuit.

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

Quantum Energy Technologies. Quantum Domestic Heat Pump Owner Manual QDC0030PD-11, PDF page 26. Retrieved .

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