About Chromagen Solar Hot Water Systems
Chromagen is a well-established name in solar hot water throughout Australia. Their flat panel solar collectors have been installed across Gold Coast homes for decades, making them one of the most commonly serviced brands on our call-outs from Southport and Broadbeach through to Helensvale, Coomera and Mudgeeraba.
Chromagen systems typically use flat panel roof-mounted collectors connected to a ground-level storage tank. Water is circulated through the collectors using a solar pump, heated by the sun, and returned to the tank for storage. An electric booster element provides backup heating when solar input is insufficient.
Todd's solar-accredited technicians have repaired hundreds of Chromagen systems across the Gold Coast. We understand the common failure points in these systems and can usually diagnose and repair faults in a single visit.
Common Chromagen Solar Hot Water Problems
Most Chromagen faults are repairable. Here are the most common issues we see across the Gold Coast.
No Hot Water
Complete failure to produce hot water. Often a solar pump fault, controller failure or booster element problem.
Reduced Hot Water Performance
System produces less hot water than usual. Commonly caused by pump issues, sensor faults or circulation problems.
Water Not Heating Properly
Water heats but doesn't reach normal temperatures. Often linked to booster faults, sensor issues or circulation problems.
Solar Pump Failures
The solar pump stops circulating water through the collectors. One of the most common Chromagen repair jobs.
Controller Faults
The controller fails to correctly manage the pump or booster, causing incorrect operation.
Sensor Issues
Roof or tank sensors fail, causing the controller to make incorrect decisions about pump and booster operation.
Roof Leaks
Leaks from collectors or pipework on the roof. Requires specialist solar plumbing repair.
Booster Faults
The electric booster element or thermostat fails, leaving the system without backup heating.
How Chromagen Solar Hot Water Systems Work
How Does A Chromagen Solar Hot Water System Work?
Chromagen solar systems use flat panel roof collectors to capture solar energy. A solar pump circulates water or glycol through the collectors and back to the storage tank. Temperature sensors on the roof collector and tank tell the controller when to run the pump. An electric booster element in the tank provides backup heating when solar input is insufficient.
Solar Collectors
Flat panel collectors on the roof absorb solar energy and transfer heat to the circulating fluid.
Storage Tank
The insulated ground-level tank stores heated water for household use.
Solar Pump
Circulates water through the collectors when the controller determines solar heating is available.
Sensors
Temperature sensors on the collector and tank continuously monitor temperatures to control pump operation.
Controller
The electronic controller reads sensor inputs and decides when to run the pump and activate the booster.
Electric Booster
A heating element and thermostat in the tank provide backup heating when solar input is low or insufficient.
Why Is My Chromagen Not Heating Water?
Why Is My Chromagen Solar Hot Water System Not Working?
The most common causes are failed solar pumps, controller faults, sensor failures, booster problems or circulation issues. In many cases the fault can be repaired without replacing the entire system.
When a Chromagen system stops producing adequate hot water, the diagnosis starts with identifying which part of the system has failed. If the solar pump has stopped, water won't circulate through the collectors regardless of how sunny it is. If a sensor has failed, the controller may not run the pump even when conditions are ideal for solar heating.
A failed booster element means the system has no backup heating — so on cloudy days or during periods of high demand, hot water will run out. Controller faults can cause a range of symptoms from the pump running constantly to not running at all.
For more detail on hot water systems that won't heat, visit our hot water not heating page. Our solar-accredited technicians service all Gold Coast suburbs and can attend quickly to diagnose Chromagen faults.
Chromagen Solar Pump Repairs
Can Chromagen Solar Pumps Be Replaced?
Yes. Solar pump replacement is one of the most common Chromagen repairs. The pump can fail due to age, bearing wear, overheating or electrical faults. Replacement is straightforward for a solar-accredited technician and restores normal system operation.
Solar pump failure is one of the most frequently diagnosed Chromagen faults. When the pump stops working, the collectors continue to absorb heat but no hot water reaches the tank. Common symptoms include water that was previously hot now running cold, or the controller showing activity but no temperature rise in the tank.
Pumps can fail suddenly or degrade gradually. A pump that's working but running at reduced flow may cause poor performance even though the system appears to be operating normally. Our technicians test pump performance and flow during diagnosis.
We carry replacement pumps for common Chromagen systems and can usually complete a pump replacement on the same visit as the initial diagnosis.
Chromagen Solar Controller Repairs
Can Chromagen Controllers Be Repaired?
Controller faults are common in older Chromagen systems. In most cases the controller can be replaced without changing any other components. A new controller restores correct pump and booster management and is usually a cost-effective repair.
The controller is the brain of the Chromagen system. It reads temperature from the roof sensor and tank sensor, and decides when to run the solar pump. It also manages booster activation in some configurations. Controller faults can cause the pump to run constantly, not run at all, or behave erratically.
Display errors, incorrect temperature readings on the controller screen and unusual pump behaviour are all signs of a controller fault. Our technicians can test the controller and sensors together to confirm whether a replacement is needed.
Chromagen Sensor Faults
Chromagen systems rely on two key sensors — one on the roof collector and one on the storage tank. If either sensor fails or drifts out of calibration, the controller can't make correct decisions about pump operation.
A failed roof sensor may cause the pump to run all the time, even at night, wasting energy and reducing system lifespan. A failed tank sensor may prevent the booster from operating correctly. Inaccurate temperature readings on the controller display are often the first sign of a sensor fault.
Sensors are inexpensive components and their replacement is a straightforward repair. Our technicians carry common Chromagen sensors and can replace them quickly.
Chromagen Booster Problems
Why Is My Chromagen Using More Electricity?
Increased electricity usage from a Chromagen system often indicates a solar circulation fault — the booster is compensating because the solar component isn't heating effectively. It can also indicate a booster thermostat stuck in the on position.
The electric booster in a Chromagen system is designed to top up the tank when solar input isn't enough. It's a critical backup, particularly during winter months or extended cloudy periods on the Gold Coast. A failed booster element means no backup heating, while a faulty thermostat can cause the booster to not activate or to run constantly.
Booster element and thermostat replacement are common hot water repairs that can usually be completed in a single visit. Our technicians are licensed to carry out electrical work on hot water systems as well as plumbing.
Chromagen Roof Leaks
Roof leaks from Chromagen solar systems can come from the collector panels themselves, the pipework connecting collectors to the storage tank, or the roof penetrations where pipes enter the roof space. These leaks can cause water damage to the roof and ceiling if not addressed promptly.
Collector panel leaks may be visible as wet patches on the ceiling below, or as reduced system performance as hot water is lost before reaching the tank. Pipe connection leaks are common in older systems as fittings age and sealants deteriorate.
All roof work on solar hot water systems should be carried out by a solar-accredited plumber. Todd's technicians hold solar accreditation and are experienced in safe and effective roof leak repairs on Chromagen systems across the Gold Coast.
Chromagen Not Producing Enough Hot Water
If your Chromagen system is producing some hot water but not enough to meet household demand, the cause is often a partial fault rather than a complete failure. A pump running at reduced speed, a collector with airlock or scale build-up, a sensor drift causing the pump to run at suboptimal times, or a booster failing to top up the tank sufficiently can all result in running out of hot water earlier than expected.
Increased household demand — such as more people using hot water than the system was sized for — can also result in running out. Growth in household size or additional bathrooms can exceed the capacity of an older system even when it's operating correctly.
For more detail, visit our hot water running out fast page. Our technicians can assess whether a fault is causing reduced output or whether the system needs upgrading.
Chromagen Hot Water Leaks
Leaks from Chromagen solar systems can occur at multiple points. Tank leaks, particularly from the PTR (pressure and temperature relief) valve or the drain valve, are common in older systems and are usually repairable. Tempering valve leaks can cause water to drip at the mixed water outlet.
Water pooling around the base of the tank, wet patches on the ceiling below the roof collectors or persistent dripping from valves are all signs that a repair is needed. Our technicians can attend quickly to identify the source and advise on the most cost-effective repair.
For comprehensive guidance on hot water leaks, visit our leaking hot water system page.
Repair Or Replace Your Chromagen System?
Are Chromagen Systems Worth Repairing?
In most cases, yes. Chromagen solar systems have long service lives and their components — pumps, controllers, sensors and booster elements — are all individually replaceable. If the tank and collectors are in good condition, repairing a failed component is almost always more economical than replacing the whole system.
Repair Is Usually Worthwhile When:
- Collectors are in good structural condition
- Tank is not corroded or leaking from the cylinder
- System is under 15 to 20 years old
- Fault involves a single replaceable component
- System has a strong repair history
- Energy savings justify the repair cost
Replacement May Be Better When:
- Collectors are cracked, delaminated or badly corroded
- Tank cylinder is leaking
- System is over 20 years old with multiple faults
- Parts are no longer available
- Repair cost approaches replacement cost
- System is significantly undersized for current demand
Why Solar Systems Are Often Worth Repairing
Solar hot water systems remain one of the most cost-effective ways to heat water in Queensland. The Gold Coast's climate is ideally suited to solar hot water, with high solar availability year-round reducing the need for electric or gas boosting. A well-maintained Chromagen system can operate effectively for 20 to 25 years.
When a solar system develops a fault, the component that's failed is usually a small fraction of the system's overall value. Replacing a pump, controller or sensor is typically far more economical than installing a new system — and restores all the energy-saving benefits that solar provides.
If you're unsure whether your Chromagen system is worth repairing, our technicians will give you an honest assessment. We'll tell you clearly when replacement makes more sense, and help you understand the options available.
How We Diagnose Chromagen Solar Faults
System Inspection
Visual inspection of collectors, tank, pipework, valves and controller for obvious faults.
Pump Testing
Test solar pump operation, flow rate and electrical supply.
Controller Diagnostics
Review controller readings, check for error codes and test controller outputs.
Sensor Testing
Test roof and tank sensors for correct temperature readings and circuit integrity.
Booster Testing
Test element resistance and thermostat operation on the electric booster.
Performance Assessment
Assess overall system performance including circulation effectiveness and temperature rise.
Repair Recommendations
Provide a clear explanation of findings and recommended repairs.
Upfront Pricing
Confirm repair costs before any work begins. No hidden charges.
We Repair Popular Chromagen Systems
Chromagen Flat Panel Systems
The most common Chromagen configuration on the Gold Coast. Flat panel collectors mounted on the roof with a ground-level storage tank. Common faults include pump failure, sensor issues and booster problems.
Chromagen Roof Mounted Systems
Close-coupled systems where the tank sits directly on the roof alongside the collectors. These systems eliminate the solar pump by using thermosiphon principles but can develop leaks and tank corrosion over time.
Chromagen Split Systems
Split systems separate the collectors from the storage tank, allowing greater installation flexibility. Pump and circulation faults are the most common repair scenarios.
Chromagen Electric Boosted Systems
Systems with electric boosting rely on a heating element and thermostat for backup. Element and thermostat replacements are common repairs that restore full system functionality.
Temporary Hot Water Solutions
If your Chromagen system needs a major repair or parts that aren't immediately available, you shouldn't have to go without hot water while waiting. Todd's can provide temporary hot water solutions to keep your household running.
This service is available to homeowners across the Gold Coast — from Robina and Nerang to Burleigh, Palm Beach and everywhere in between. Ask our team about temporary hot water options when you call.
Why Gold Coast Homeowners Choose Todd's
Solar Accredited Plumbers & Electricians
Todd's hold solar accreditation for both plumbing and electrical work — essential for safe and compliant solar hot water repairs.
23+ Years Experience
Over two decades of solar hot water repair experience across the Gold Coast means we've seen every Chromagen fault type.
Family-Owned Local Business
Todd's is a Gold Coast family business. When you call us, you're dealing with a local team that genuinely cares about the outcome.
Licensed Plumbers & Electricians
Our team holds full plumbing and electrical licences, allowing us to handle every aspect of a solar hot water repair.
Fast Response Times
We understand a hot water fault is urgent. We offer same-day service across the Gold Coast where our schedule allows.
Honest Advice
We'll always tell you when replacement is the better option. You won't be sold an expensive repair on a system that's at the end of its life.
Gold Coast Service Areas
Our solar hot water repair technicians service the entire Gold Coast. Homeowners in Southport, Labrador and Helensvale regularly call us for Chromagen faults. We also cover Hope Island, Coomera and Pimpama in the northern Gold Coast corridor, and attend to Chromagen repairs in Robina, Nerang and Mudgeeraba on a regular basis.
On the southern Gold Coast, we service Burleigh, Palm Beach, Mermaid Waters, Broadbeach and Ashmore. Properties in Benowa, Pacific Pines and surrounding suburbs are well within our regular service area.
If you're unsure whether we cover your suburb, call 0482 080 423 and we'll confirm availability. We aim to attend same-day where possible.
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