
If your Chromagen solar hot water system isn’t heating properly, leaking, or showing error codes, you’ve come to the right place. At Todd’s Plumbing & Electrical, we specialise in diagnosing and repairing all Chromagen models — from rooftop solar panels to ground tanks and controllers.
With over 20 years of local experience, our licensed plumbers know exactly how to get your hot water running again — efficiently, safely, and affordably.

If your Chromagen solar hot water system isn’t heating properly, leaking, or showing error codes, you’ve come to the right place. At Todd’s Plumbing & Electrical, we specialise in diagnosing and repairing all Chromagen models — from rooftop solar panels to ground tanks and controllers.
With over 20 years of local experience, our licensed plumbers know exactly how to get your hot water running again — efficiently, safely, and affordably.

No hot water or lukewarm water – Often caused by a faulty thermostat, element, or circulation issue.
Leaking solar panels or tanks – May indicate corrosion, cracked fittings, or failed seals.
PTR valve constantly dripping – Usually a sign of excess pressure or temperature imbalance.
Noisy or unreliable operation – Could be due to pump wear, controller faults, or trapped air.
Solar system not boosting – We test and repair electric or gas boosters to restore full temperature.
Our Repair Process
Inspection & Diagnosis – We run performance checks and test components like sensors, valves, and thermostats.
Clear Explanation & Quote – You’ll know exactly what’s wrong and what it costs before we start.
Same-Day Repairs – Most jobs are completed on the spot to get your hot water back fast.
Testing & Clean-Up – We verify system pressure, flow, and temperature — and leave your site spotless.
1. No Hot Water / Only Warm Water
Likely causes:
Faulty thermostat or element in the electric booster
Failed sensor or circulation pump
Airlock in solar lines
Blocked panel flow due to debris or mineral build-up
Incorrect tariff or timer settings
Test booster element, thermostat, continuity & amperage
Reset or replace failed sensors
Bleed solar circuit and restore correct flow rate
Flush or clean solar panels
Reprogram boosting schedules to ensure morning and evening heat recovery

2. Solar Panels Not Heating / Cold Water in the Morning
Likely causes:
Pump not circulating water
Faulty differential controller
Temperature imbalance in roof panels
Split or blocked solar pipework
Test and replace solar pump motors
Repair controller faults or wiring
Inspect and repair blocked or kinked rooftop lines
Check panel temperature delta and restore proper solar gain

Likely causes:
Excess pressure inside the tank
Worn or failing PTR valve
Expansion issues from overheating
High mains pressure entering the home
Replace PTR valve with compliant Australian-standard valves
Check and adjust mains pressure
Install pressure limiting valves where required
Test tank temperature and ensure booster isn’t overheating

Likely causes:
Corrosion inside the tank
Cracked panels or fittings
Perished roof seals
Damaged brass unions
Replace tank fittings, unions, seals or pipework
Repair panel leaks where possible
Reseal rooftop penetrations
Advise on replacement options if tank is structurally compromised

5. Error Codes or Controller Failure
Sensor failures
PCB issues
Power surges or degraded wiring
Incorrect temperature feedback
Diagnose controller readings
Replace faulty sensors
Repair or replace wiring terminals
Reset or replace differential controllers

Common causes
Boosting not working
Thermostat stuck at low temperature
Stratification issues inside tank
Solar circulation not maintaining heat levels
Test and repair booster
Replace faulty thermostats
Reconfigure boosting cycles
Restore hot/cold layer balance in the tank

7. System Making Gurgling, Banging, or “Boiling” Sounds
Likely causes:
Air in solar lines
Overheating in the panels
Faulty non-return valves
Pressure build-up
Bleed system and remove air pockets
Test and replace non-return valves
Install tempering and pressure controls
Check and calibrate tank temperature

8. Solar Pump Not Running
Likely causes:
Burnt-out pump motor
Failed relay or PCB
Faulty temperature sensor
Replace pump motor
Repair wiring/relays
Check controller output and replace sensors

9. Booster Not Working (Electric or Gas)
Likely causes:
Faulty thermostat or heating element
Tripped breakers
Failed igniter (gas)
Incorrect tariff wiring
Replace elements, thermostats, fuses or breakers
Repair booster wiring
Fix ignition and gas-related faults (licensed gasfitters only)
Reconfigure boosting schedule for maximum efficiency


Local & Family-Owned – Proudly servicing the Gold Coast for over two decades.
Fast, Same-Day Service – No waiting days for hot water again.
Licensed Plumbers & Technicians – Fully qualified to repair Chromagen solar systems.
Up-Front Pricing – No hidden surprises, ever.
5-Star Reviews – Trusted by hundreds of local homeowners and strata managers

Service Areas
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

Q: How long do Chromagen solar hot water systems last?
A: Typically 10–15 years with regular servicing. Early maintenance helps prevent corrosion, leaks, and thermostat failures.
Q: Can you replace my old Chromagen system if it’s beyond repair?
A: Absolutely. We can install a new solar or heat-pump unit and help you access STC rebates to lower the cost.
Q: Are repairs covered by warranty?
A: We provide workmanship guarantees and can assist you with Chromagen warranty claims where applicable.
Q: What if my system is making gurgling or dripping noises?
A: That’s often trapped air or valve imbalance. We’ll bleed the system, check pressure, and ensure smooth operation.
Q: Do you offer same-day service?
A: Yes — we prioritise all hot water emergencies and can usually attend the same day anywhere on the Gold Coast.

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