Melbourne's Rinnai Gas Heater Specialists
Rinnai is Australia's most popular gas heater brand and one of the most common brands we service across Melbourne every single week. From the iconic Rinnai Energysaver wall furnace found in thousands of Melbourne homes to Rinnai's modern ducted heating systems and continuous flow hot water units, our licensed gas fitters are highly experienced with the full Rinnai range.
We carry a comprehensive stock of Rinnai-specific parts on the van including thermocouples, ignition modules, gas valves, fan motors, capacitors and PCB boards for the most common models. This means most Rinnai faults are diagnosed and repaired in a single visit, no waiting days for parts to be ordered.

Whether your Rinnai heater has stopped working, is displaying an error code, is blowing cold air or is simply due for its annual service, Gas Experts Melbourne is the team to call.

About Rinnai Gas Heaters in Melbourne
Rinnai is a Japanese gas appliance company with manufacturing operations in Australia. It has been one of Australia's leading gas heating brands for over 50 years. In Melbourne, Rinnai products are found in virtually every suburb, from older wall furnaces installed in the 1970s and 1980s to modern high-efficiency ducted systems installed last year.
Rinnai appliances are generally well-built and reliable. The most common issues we see are thermocouple failure on older models, ignition module faults, fan motor wear on ducted systems and error codes on newer electronic models.
Rinnai's Melbourne product range includes
- Wall furnaces (flued and unflued): the Energysaver and Avenger series
- Space heaters and panel heaters
- Ducted gas heating systems
- Gas log fires and fireplaces: the Natural Touch series
- Continuous flow hot water systems: the Infinity series
- Gas storage hot water systems

Rinnai Models We Service and Repair
Our licensed gas fitters are experienced with the full range of Rinnai gas heaters found in Melbourne homes. Here are the most common models we service.
The Rinnai Energysaver is one of the most recognisable gas heaters in Australian homes. A wall-mounted, flued gas heater that has been in production in various forms for decades. Highly reliable when well maintained but prone to thermocouple failure, pilot assembly deterioration and ignition faults as it ages.
Common faults: Pilot light won't stay lit (thermocouple), heater not igniting (ignition module or gas valve), heater cutting out (overheat safety switch), error codes on newer electronic models.
The Rinnai Avenger is a popular flued wall furnace available in a range of output sizes. Commonly installed in Melbourne bedrooms, living rooms and small to medium-sized homes.
Common faults: Similar to the Energysaver: thermocouple, pilot assembly, ignition module, gas valve.
Rinnai's gas log fire range provides the appearance of a real wood fire with the convenience and efficiency of gas. Installed in living rooms and feature fireplaces across Melbourne.
Common faults: Pilot assembly deterioration, thermocouple failure, remote control faults, ignition issues.
Rinnai ducted gas heating systems are installed across Melbourne's south-east suburbs and new builds. We service and repair all Rinnai ducted systems including the controller, main unit, gas valve and fan motor assembly.
Common faults: Return air filter blockage, fan motor wear, ignition failure, zone controller faults, pressure switch faults.
The Rinnai Infinity series is Australia's most popular continuous flow hot water range. We service and repair all Rinnai Infinity models including error code diagnosis, flow sensor faults, heat exchanger descaling and ignition repairs.
Common faults: Error code 11 (ignition failure), error code 12 (flame failure), error code 61 (fan fault), heat exchanger scale build-up, flow sensor fault.
Common Rinnai Gas Heater Faults We Repair
The most common Rinnai fault. The heater fails to light when turned on.
Common causes
- Faulty thermocouple or thermopile (older models with standing pilot)
- Faulty ignition module or igniter (electronic ignition models)
- Gas supply issue check meter and other appliances
- Dirty or blocked pilot assembly
- Faulty gas valve
What to do: Check gas supply. Try one reset. If the fault persists, call us for a same-day diagnosis.
Error code 03 indicates flame failure: the burner has failed to establish or maintain a flame.
Common causes
- Dirty or blocked burner
- Faulty flame sensor
- Gas supply interruption
- Faulty gas valve
What to do: Try one reset. If code 03 reappears, call us. Repeated flame failure codes indicate an underlying fault.
Error code 11 indicates no ignition: the heater has attempted to ignite but failed.
Common causes
- Faulty ignition module
- Gas supply issue
- Dirty pilot assembly
- Faulty PCB
What to do: Check gas supply. Try one reset. Call us if the code returns.
The heater turns on and the fan runs but no heat is produced.
Common causes
- Flame failure main burner not lighting despite fan running
- Faulty gas valve
- Faulty thermostat
- Cracked heat exchanger (safety shutdown)
What to do: Call us for a diagnosis. Cold air from a running heater indicates a combustion fault that requires professional attention.
The heater starts, runs briefly and then shuts off.
Common causes
- Blocked return air filter (ducted systems) the most common cause
- Overheat safety switch activating
- Fan motor fault reducing airflow
- Thermostat fault
What to do: Clean the return air filter on ducted systems first. If the problem persists, call us.
The heater has detected an overtemperature condition.
Common causes
- Blocked return air filter (ducted systems)
- Insufficient ventilation
- Fan fault
What to do: Clean the filter. If the code persists, call us for a fan and airflow assessment.
The most common Rinnai Infinity error code: ignition failure on the hot water unit.
Common causes
- Gas supply issue
- Faulty igniter
- Dirty burner
- Faulty gas valve
- Low gas pressure
What to do: Check gas supply. Try one reset by turning the unit off and back on. Call us if the code persists.
Rinnai Heater Not Working? We Can Fix It Today.
Gas Experts Melbourne provides same-day Rinnai gas heater diagnosis and repair across Melbourne. We carry Rinnai parts on the van. Most Rinnai faults resolved in a single visit. No call-out fee when you book online.
Why Annual Rinnai Servicing Is Important
Rinnai recommends annual servicing of all gas heating appliances by a licensed gas fitter. This recommendation exists because regular servicing:
Every Rinnai service we carry out includes a carbon monoxide combustion test, a full gas safety inspection and a written service record. You receive written evidence that your Rinnai appliance has been professionally serviced by a VBA licensed gas fitter.
- Prevents thermocouple failure turning into a complete breakdown in the middle of winter
- Keeps the burner clean for efficient, safe combustion
- Confirms the heat exchanger is intact: a cracked Rinnai heat exchanger produces carbon monoxide
- Identifies fan motor wear before it leads to a complete motor failure
- Keeps the appliance operating within the efficiency ratings it was sold on
- Maintains the manufacturer's warranty requirements

What's Included in Our Rinnai Gas Heater Service
- Visual inspection of the heater: casing, controls, vents and connections
- Burner clean and inspection: remove carbon deposits, check for damage
- Heat exchanger inspection: check for cracks or deterioration
- Flue inspection: check flue condition and external termination
- All gas connections and fittings checked for leaks
- Pilot light and ignition system inspection, clean and test
- Thermocouple or thermopile inspection and test
- Thermostat calibration and controls check
- Fan motor inspection (ducted and fan-assisted models)
- Filter inspection and clean (ducted models)
- Carbon monoxide (CO) combustion test
- Gas pressure test
- Safety device function test
- Written service record on completion

Why Melbourne Homeowners Choose Gas Experts Melbourne for Rinnai Service











