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Sanden Heat Pump Repairs & Servicing Gold Coast

Gold Coast’s Sanden CO₂ Heat Pump Specialists

Got no hot water, lukewarm water, constant PTR dripping, error codes, or a unit that runs all the time? Todd’s Plumbing & Electrical provides same-day diagnostics, repairs and preventative servicing for Sanden Eco® Plus heat pump hot water systems across the Gold Coast. Sanden systems are split-type (outdoor heat-pump + stainless tank) and use CO₂ (R744) refrigerant for high efficiency.

📞 Call 0482 080 423 for same-day service
or request a free quote online.

Why choose Todd’s

Sanden specialists — experienced with GAU-A45HP(A/C) outdoor units and GAUS-250/300/315 tanks
Dual-trade techs — licensed plumbers + electricians in one visit
Up-front pricing — fixed quotes before work
Warranty-aware methods that follow Sanden’s installation/service guidance (warranty work is via authorised dealers; we’ll advise best path).
Local, family-owned, 20+ years on the Gold Coast

Sanden quick facts (what we service)

CO₂ (R744) refrigerant, split system (outdoor unit + tank); high efficiency without a backup element.
Operating range: typically −10 °C to +43 °C with built-in freeze protection.
Current models include GAU-A45 heat-pump paired with GAUS-* tanks; service books and installation manuals document layouts, error codes and wiring.

We service sensors/thermistors & PCB, fan/evaporator coil, compressor & electrics, PTR/expansion valves, anodes & cylinder, and condensate/drainage.

Common Sanden Heat Pump Issues We Fix

Symptom	Possible Causes	What we do
No hot water / lukewarm	Sensor fault, compressor not engaging, refrigerant loss, restricted airflow, tariff/timer issue	Read codes, ohm-test sensors, verify wiring, clean coil & set timers
PTR valve dripping	High pressure/temperature, worn valve, blocked drain	Test valve & pressures, replace if needed, confirm drain routing
Runs constantly / short cycles	Cold ambient, dirty/iced coil, control/sensor fault	Clean coil, verify defrost, test sensors/PCB
Noise / vibration	Fan bearing wear, debris, loose mounts, compressor strain	Inspect fan, secure mounts, clear debris
Error codes	Examples include H9/HC/J3…, E6/E8, U2, u0 etc.	Diagnose per service flow → sensor/wiring/PCB/compressor checks. (Pure Electric Solutions)

Typical error references: Sanden service/installation guides list thermistor, compressor, current/voltage and communication errors with step-by-step checks.

How Sanden CO₂ heat pumps work (and what we check)

Sanden’s outdoor unit absorbs heat from air, compresses CO₂, and transfers heat to the tank via a heat-exchange coil. CO₂ systems deliver strong performance in cold weather; correct sensor readings, airflow clearance, and refrigerant integrity are critical to efficiency and reliability.

Our Repair & Service Process

Diagnosis — error-code scan, electrical tests, sensor resistances, airflow/coil inspection, valve & safety tests
Clear quote — options and parts explained before any work
Repair — genuine/compatible parts; no shortcuts
Commissioning — temperature/pressure verification, leak & safety checks, timer/off-peak setup
Care tips — airflow clearance, PV/off-peak scheduling, anti-freeze guidance

Repairs Guide

Diagnostic & quote
Sensor/PCB/element repairs
PTR valve replacement & safety test
Annual preventative service
Major components (fan/compressor/coil) — quoted after inspection
Final price depends on model, age and site access. We’ll confirm before starting.

Areas We Service

We provide Rheem heat pump repair and servicing throughout the Gold Coast & throughout SEQ, including:
Southport, Labrador, Arundel, Parkwood, Helensvale, Hope Island, Coomera, Pimpama, Runaway Bay, Biggera Waters, Benowa, Bundall, Broadbeach, Mermaid Waters, Burleigh Heads, Burleigh Waters, Varsity Lakes, Robina, Carrara, Nerang, Mudgeeraba, Elanora, and Palm Beach.

Wherever you are on the Gold Coast — we’re nearby and ready to help.

Get Your Hot Water Back Today

📞 Call Todd's Now: 0482 080 423

Don’t live with cold showers or error codes. Our licensed team will diagnose, repair and optimise your Sanden CO₂ heat pump fast.

Same day service
All brands and models serviced
Upfront fair pricing
20+ years local experience
Fully licensed and insured
Workmanship guaranteed

Todd's plumbers and electricians are qualified and licensed experts in all aspects of heat pump repairs.

If it can't be fixed we can supply a new system from as little as $24 a week

FAQs

Do you repair GAU-A45 with GAUS-315 tanks?

Yes — we diagnose faults, test sensors and PCB, and repair fan/compressor, valves and drainage to spec. Manuals cover layouts and tests

How cold can Sanden operate?

Sanden Eco® Plus is specified to operate around −10 °C to +43 °C without an electric booster and includes freeze protection.

Who handles Sanden warranty claims?

Warranty work is performed by authorised Sanden dealers/installers; we’ll advise if your issue should go via that channel or if out-of-warranty repair is best.