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Bosch Solar Hot Water Repairs – Gold Coast

Fast, reliable repairs for Bosch solar hot water systems.

If your Bosch solar hot water system has gone cold, is leaking from the roof, or the booster keeps cutting out, Todd’s Plumbing & Electrical can help.

We repair and service Bosch Solar Wizard close-coupled systems and Bosch split solar hot water systems with electric or gas boosting – common setups in Australian homes that use roof panels and a storage tank to supply low-cost solar hot water.

With 20+ years on the Gold Coast, our licensed plumbers understand how local climate, roof layouts and water quality affect Bosch solar systems – and what it takes to get them running efficiently again.

📞 Same-day Bosch solar repairs: 0482 080 423

Bosh solarhot water repairs Gold Coast

Bosch Solar Hot Water Systems We Service

We work on the main Bosch solar hot water configurations used in Australia:

Bosch Split Solar Hot Water (Closed-Loop)

  • Roof-mounted solar collectors

  • Ground-level storage tank

  • Closed-loop (heat-exchange) system suitable for a wide range of climates

  • Available with electric or gas boosting, using a Bosch booster unit.

Bosch Solar Wizard (Electric / Gas Boosted Solar)

  • “Solar Wizard” branding on tank/labels

  • Typically roof panels feeding a ground tank with inbuilt or external Bosch booster

  • Designed to maximise solar contribution and top up with electric or gas when needed.

Bosch Solar Panels & Boosters

  • Bosch-branded solar collectors and panel sets

  • Bosch continuous-flow gas units used as solar boosters

  • Controllers, pumps and sensors that manage circulation and boosting.

If you’re not sure what you have, a quick photo of the tank, panels, and compliance plate is usually enough for us to identify the model.

Common Bosch Solar Hot Water Problems (and How We Fix Them)

This section is structured for both humans and answer engines: symptoms, likely causes, and the practical fixes Todd’s provides.

1. No Hot Water or Only Lukewarm Water

Typical syptoms:

  • Showers are stone cold, or only lukewarm

  • Hot water runs out very quickly, especially mornings or late at night

Likely causes:

  • Failed electric element or thermostat in the Bosch booster

  • Gas booster not igniting or locking out

  • Solar pump not circulating water through the panels (split systems)

  • Airlocks or partial blockages in solar pipework

  • Incorrect tariff/timer settings so the booster isn’t cutting in

General solar hot water guides list insufficient boosting, flow problems and sensor faults among the most common reasons systems stop heating properly.

What Todd's does:

  • Test the element, thermostat and electrical supply to the Bosch booster

  • For gas-boosted systems, check ignition, gas supply and error history

  • Confirm pump operation, flow and temperature difference across collectors

  • Bleed air from the solar circuit and clear restrictions

  • Re-set timers and boosting schedules to match your household usage

Bosch solar tak not heating

2. Bosch Solar Not Heating on Sunny Days

Typical symptoms:

  • Tank temperature stays low even after a full day of sun

  • Roof panels feel cool when they should be warm or hot

Likely causes:

  • Circulation pump failure (stuck, seized, or no power)

  • Faulty roof or tank sensors, so the controller doesn’t call for pumping

  • Incorrect installation (flow direction, piping gradients)

  • Excessive air in the system stopping circulation

Our fix:

  • Test pump power draw and replace failed pumps

  • Check controller, wiring and sensor readings for realistic temperatures

  • Flush and bleed the solar lines to restore proper circulation

  • Confirm layout matches Bosch installation requirements and correct if needed

leaking Bosch panel repais

3. Leaking Solar Panels, Pipes or Tank

Symptoms

  • Constant dripping from the roof near solar panels

  • Rust marks down walls or gutters

  • Puddles around the tank, valves or pipe connections

Across brands, leaks from tanks, joints or collectors are one of the most common solar hot water issues, often due to corrosion, weathering or high pressure.

Likely causes:

  • Corrosion or internal tank failure

  • Cracked collector, damaged header rail or fittings on the roof

  • Perished seals and unions from age or movement

  • High mains pressure stressing joints and valves

Our fixes:

  • Pressure-test the system to locate the exact leak

  • Replace unions, fittings, valves, roof penetrations and short pipe sections where viable

  • Replace damaged collectors if they’re split or badly corroded

  • If the tank has failed, we’ll explain options for a new solar, heat pump or high-efficiency replacement system

Bosch valve leaking

4. PTR Valve Constantly Dripping

Every Bosch solar hot water system has a Pressure & Temperature Relief (PTR) valve. A brief discharge during heating is normal; ongoing flow is not.

Industry troubleshooting resources highlight PTR leaks as a common symptom of failed valve seals, thermostat faults or high pressure.

Likely causes:

  • Continuous trickle or flow from the PTR drain line

  • Hissing or steaming at the relief outlet on hot days

Likely causes:

  • Excess pressure inside the tank

  • Worn or faulty PTR valve

  • High mains pressure with no pressure-limiting valve

  • Thermostat or controller overheating the water and lifting the valve

What Todd's does:

  • Check mains and system pressures and adjust if required

  • Replace the PTR valve with a compliant new unit

  • Install or confirm a pressure limiting valve on the cold supply

  • Test thermostats and boosting controls to stop overheating

bosch solar water not heating

5. Pump Not Running / Running Constantly

Symptoms:

  • System stays cool despite sun (pump not running)

  • Pump noise or vibration all day, even when it shouldn’t be on

Likely causes:

  • Burnt-out or seized circulation pump

  • Faulty relay or controller output

  • Sensor giving incorrect readings to the controller

  • Airlocks causing cavitation or stalling

Our fixes:

  • Test pump voltage and current draw

  • Check controller output and wiring integrity

  • Replace pumps, relays or sensors where needed

  • Bleed air from the circuit and verify correct flow direction and fall

solahart solar pump not working

6. Error Codes, Flashing Lights or Controller Faults

Many Bosch gas and electric units used as solar boosters have error codes and diagnostics. Specialist Bosch troubleshooting guides emphasise that complex faults and error codes should be handled by licensed technicians.

What we see in the field:

  • Gas booster tries to start and then shuts down

  • Error lights or codes on the Bosch unit

  • Water temperature surging hot/cold

Our fix:

  • Read and interpret error codes on Bosch boosters where available

  • Check gas supply, combustion air, ignition and flame detection

  • Inspect filters, inlet screens and flow sensors

  • Test controllers, reset lockouts and replace faulty components with genuine parts

Bosch solar hot water not heating

7. Noisy, “Boiling” or Overheating Collectors

Typical Symptoms:

  • Gurgling, knocking or “kettling” sounds on the roof

  • Steam or very hot discharge at vents or relief points on extreme days

Likely causes:

  • Air trapped in solar lines

  • Stagnation due to poor circulation

  • Incorrect pipe gradients or installation issues

  • Faulty non-return valves or tempering valves

Our Fix:

  • Bleed air from the solar circuit

  • Confirm correct pipe gradients and flow direction, and rectify where practical

  • Replace non-return and tempering valves as needed

  • Adjust system controls to minimise stagnation and overheating events

Bosch not heating

Why Gold Coast Locals Choose Todd’s for Bosch Solar Repairs

  • Local & family-owned – over 20 years on the Gold Coast

  • Bosch solar experience – familiar with Solar Wizard, split solar and Bosch booster setups

  • Fast, same-day hot water repairs – we prioritise no-hot-water calls

  • Up-front pricing – clear quotes and options before we start

  • 5-star service – trusted by homeowners, strata managers and property managers

Service Areas

We repair Bosch solar hot water systems across the Gold Coast, including:

Southport • Labrador • Arundel • Helensvale • Coomera • Upper Coomera • Runaway Bay • Hope Island • Robina • Varsity Lakes • Burleigh Heads • Burleigh Waters • Nerang • Pacific Pines • Molendinar • Paradise Point and surrounding suburbs.

Why Choose Todd’s Plumbing & Electrical

  • ✓ Family-owned Gold Coast business

  • ✓ 20+ years specialising in solar hot water repairs

  • ✓ Licensed plumbers & electricians (no subcontractors)

  • ✓ Fast same-day service available

  • ✓ 5-star local reviews & long-term customer relationships

  • ✓ Experts in Solahart system diagnostics

When you call us, you speak directly with a local team—not an offshore call centre.

Call the Bosch Solar Hot Water Experts

If your Bosch solar hot water system isn’t performing, don’t put up with cold showers.

📞 Call Todd’s Plumbing & Electrical on 0482 080 423
Fast, friendly Bosch solar hot water repairs across the Gold Coast.

Frequently Asked Questions

Q: Why is my Bosch solar hot water not heating properly?
A: The usual culprits are a failed electric or gas booster, a solar pump that isn’t circulating, sensor or controller faults, or airlocks and blockages in the solar pipework. A licensed plumber can test each part, bleed the system and reset your boosting so the tank actually heats up when you need it.

Q: How long should a Bosch solar hot water system last?
A: With correct installation and regular maintenance, most Bosch solar systems can last around 10–15 years or more, though coastal air, high water pressure and poor water quality can shorten tank life. Frequent leaks, rust around fittings or repeated breakdowns are signs it may be approaching end of life.

Q: Can you repair leaks in Bosch solar panels or do they need replacing?
A: Leaks from pipe joints, valves or fittings are often repairable. If the collector itself is cracked, split or badly corroded, replacement is usually more cost-effective and safer long-term. We’ll always outline both repair and replacement options before you decide.

Q: Do you work on Bosch Solar Wizard systems?
A: Yes. We service and repair Bosch Solar Wizard systems, including their panels, storage tanks and electric or gas boosters. If you’re unsure of the exact model, we can identify it from photos or on site.

Q: How often should I service a Bosch solar hot water system?
A: As a general rule, a check every 3–5 years is wise – including valve checks (especially the PTR valve), inspection of collectors, testing of sensors and pumps, and ensuring the booster and safety controls are working correctly. Regular maintenance reduces the risk of sudden failure and extends the life of the system.

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

Over 22 Years of 5-star Rated Service

Solar Hot Water Brands We Service & Repair

  • Aquamax

  • Apricus

  • Beasley

  • Bosch

  • Chromagen

  • Conergy

  • Dux

  • Ecosmart

  • Envirosun

  • Edwards

  • Everhot

  • Hills

  • Leda

  • Quantum

  • Midea

  • Neopower

  • Reece

  • Rheem

  • Rinnai

  • Sanden

  • Saxon

  • Stiebel Electron

  • Solahart

  • Solargain

  • Solar Oz Solar

  • Power Sun Ray

  • Sun Solar

  • Thermasun

  • Vulcan

Finance Available

Hot Water System Repairs & Replacement Experts

Roof Mounted
Solar Hot Water

Split System

Solar Hot Water




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Submit your details or call 0482 080 423

Head Office

1/28 central Park Avenue, Ashmore, Qld, 4214

0482 080 423

1300 609 606

QBCC: 1126780

Electrical License Number: 71053

We accept cash, direct deposits, and all major CC's