Facing hiccups with your Thermann hot water system? Whether it’s an electric, gas, heat pump or solar hot water system, this handy guide is here to help you pinpoint and fix some basic troubleshooting issues.
Thermann, known as Australia’s fastest-growing hot water brand, delivers a variety of dependable and energy-efficient systems. But, like any trusty appliance, they might need a bit of troubleshooting now and then.
That’s why we’ve put together this Thermann hot water system troubleshooting guide. Whether you have a Thermann electric, gas, heat pump or solar hot water system here are some tips to help tackle common problems, before you call a plumber.
Getting to Know Your Thermann Hot Water System
Before we jump into solving problems, let’s grasp the basics. Thermann offers a range of hot water systems, including:
- Continuous Flow Systems: Efficient, on-demand hot water solutions using gas.
- Electric Storage Range: These systems store hot water in an insulated tank, powered by electricity. They are available in a variety of sizes and are suitable for homes without access to gas or solar energy. They typically operate during off-peak hours to reduce energy costs.
- Gas Hot Water Storage Systems: Gas storage systems heat water using natural gas or LPG and store it in a tank, ready for use at any time. They tend to heat faster than electric models, making them a popular choice for larger households.
- Solar Systems: Solar-powered options, including electric-boosted models for consistent hot water.
- Heat Pumps: Energy-efficient systems, including hybrid and split models.
- Smart Electric Systems: Advanced electric storage with smart technology.
- Commercial Systems: Designed for businesses, offering both continuous flow and large-scale storage options.
With this understanding, you can approach any issues more effectively.
Thermann Electric Hot Water System Troubleshooting
No Hot Water
For electric hot water systems, first check that the power supply’s circuit breaker hasn’t tripped. Additionally, if your system operates on a timed tariff like off-peak, confirm that it’s functioning as expected.
If these two things are okay, the issue could lie with the heating element or thermostat.
Thermostats are essential for regulating the temperature of the water in electric storage units. They continuously monitor the water’s heat levels and activate or deactivate the heating elements as needed, ensuring the water stays within the desired temperature range.
If the thermostat fails, it can prevent the system from heating the water or cause overheating, potentially leading to other issues. Faulty thermostats or heating elements require professional inspection and repair by a licensed plumber, especially if the system has an inconsistent water temperature.
Insufficient Hot Water or High Energy Bills
Appliance Usage
High consumption from showers, washing machines, or dishwashers may cause insufficient hot water. Evaluating how much hot water your household uses daily can help identify if usage is exceeding your system’s capacity.
Water Heater Size
Frequent lack of hot water could indicate that the water heater is undersized. It’s important to check if your system is appropriately sized for your household. Our handy calculator can help you determine what size hot water system you need.
Leaking Pipes or Taps
Leaks in pipes or taps can lead to significant hot water loss, contributing to increased energy costs. Fixing leaks can help improve efficiency.
PTR Valve Issues
Continuous leaks from the pressure and temperature relief valve may indicate excessive pressure, a faulty regulator, or thermostat issues, potentially leading to higher energy consumption. In this case, turn off the heater and contact our plumbers for assistance.
Strange Noises
Unusual sounds coming from your electric hot water system can be disconcerting. Here are some possible causes:
- Sediment build-up in the tank can cause rumbling or popping noises. This is a sign that your system needs flushing.
- Expansion and contraction of metal parts during heating cycles can cause creaking or cracking sounds, which are generally normal.
Water is Too Hot
If your water is consistently too hot, it could be due to:
- A faulty thermostat
- Incorrect temperature setting
For gas storage systems, check the temperature setting on the control knob. For electric models, the thermostat may need adjusting. Our experienced, licensed plumbers can assist with this. Give us a call on 07 3477 9978.
Thermann Gas Hot Water System Troubleshooting
When troubleshooting a Thermann gas hot water system, start by verifying that the pilot light is lit and operating correctly. Next, check the gas burner to ensure it’s functioning and that the control knob is set to the correct position. Finally, confirm that the gas supply isolation valve is open to allow proper gas flow to the system.
If you need to relight your gas system, follow these steps:
1. Turn the control knob to the “•” (off) position.
2. Wait five minutes for any unburnt gas to escape.
3. Turn the control knob to the pilot position.
4. Depress the control knob fully and hold it while repeatedly pressing the igniter button until the pilot flame ignites.
5. Keep the control knob depressed for 20 seconds after the pilot flame lights.
6. Release the control knob and check that the pilot remains alight.
7. Turn the control knob to your desired temperature setting.
Water Leaks
Water leaks can be concerning, but not all water around your system indicates a problem. For gas storage units, condensation can form when heating a large quantity of cold water, which may appear like a leak but is actually normal.
It’s normal for a small amount of water to discharge from the pressure and temperature relief (PTR) valve in gas storage systems. This typically amounts to around 2% of the heated water volume.
If your hot water system is leaking continuously it could signal an issue, likely caused by a build-up of debris. To address this, gently lift the valve’s easing lever for a few seconds and then release it. This might dislodge any foreign particles and resolve the problem.
If it doesn’t, contact our friendly plumbers who are here to assist with your hot water needs.
Troubleshooting Your Thermann Heat Pump Hot Water System
If your Thermann Heat Pump Hot Water System isn’t delivering hot water, there could be several reasons behind the issue. Try these troubleshooting steps to potentially identify and resolve the problem:
- Check Power Supply:
- Ensure that the appliance is properly connected to the power supply.
- Inspect your domestic distribution board to see if any fuses or MCBs have blown or tripped. If they trip again after reconnecting, it’s time to contact your plumber or service department.
- Inspect Airflow:
- Examine the air intake and discharge grilles for any blockages or contamination.
- Clear any debris to ensure that airflow is not obstructed, which is crucial for the system’s operation.
- Flashing “Spanner” Symbol (Hybrid Model Only):
- A flashing orange spanner symbol indicates a fault in the system, preventing it from heating water.
- If this persists for more than 12 hours, give us a call at Drain Defenders. In the meantime, you can activate the emergency mode by pressing and holding the “Element boost” button for two seconds. Note that this won’t work if the hot water cylinder is empty or if temperature sensors are faulty.
- Error Code on LCD Screen (Split Model Only):
- If an error code appears on the LED display, the system has encountered an issue.
- The display will remain active with the error code visible. Contact our licensed plumbers and provide them with the error code details for further assistance.
If these steps do not resolve the issue, it’s advisable to have your hot water system inspected and tested by our licensed plumbers to ensure it is functioning correctly and safely.
Troubleshooting Tips for Thermann Solar Hot Water Systems
Check the Booster System
Your Thermann solar hot water system is equipped with a booster to provide hot water on cloudy days. If you’re experiencing a lack of hot water, verify if the booster is functioning. This backup ensures you won’t be without hot water when solar energy is insufficient.
Inspect the Power Supply
If your system isn’t heating water on a sunny day, make sure that the controller and pump unit are plugged in and receiving power. Without electricity, the system will be unable to regulate or circulate the water.
Verify Controller Operation
The controller monitors water temperature and ensures the system operates efficiently. Confirm that it is powered on and functioning properly. If the controller is off, it will not manage the heating process, leading to potential issues with water temperature.
Check Pump Functionality
The pump circulates water between the manifold and the storage tank. Ensure it is running correctly. If the pump isn’t cycling the water, it could damage the manifold due to overheating, especially on sunny days.
Monitor for Water Cycling
Regular water circulation is essential to prevent damage and maintain efficiency. If the water isn’t cycling periodically between the manifold and tank, the system may be compromised, leading to overheating or a lack of hot water.
Troubleshooting Continuous Flow Systems
When troubleshooting a continuous flow hot water system, several factors could be at play, including issues with the gas, water, or power supply. Before calling a plumber, consider the following:
- Are the controller displays on? Use the ON/OFF button to check.
- Is gas being supplied? Test other gas appliances like the stove.
- Is water flowing to the unit? Turn on a hot tap to check.
- Is there power? Test the power outlet with another appliance, and check for tripped fuses in your home.
If the unit shows an error code, consult a licensed plumber.
Tips for Maintaining Thermann Products
Regular maintenance can prevent many issues and extend the life of your Thermann hot water system:
Six Monthly Maintenance
To keep your hot water system running smoothly, it’s important to give some attention to the temperature and pressure relief valve. Here’s a simple way to do it:
- Locate the Valve: This is usually found on the side or top of your hot water tank. It’s designed to release pressure and prevent overheating.
- Operate the Easing Lever: Gently lift the small lever. This action helps clear out any lime deposits that might have built up over time. You might hear a slight hiss as water is released, which is normal.
- Check for Blockages: As you operate the lever, ensure that water flows freely. If it doesn’t, there might be a blockage that needs attention.
- Repeat for the Expansion Control Valve: If your system has an expansion control valve, follow the same steps. This helps manage the pressure as water heats and expands.
Annual Maintenance For Gas Systems
- Have a licensed gas plumber check the gas control valve, spark gap, and thermocouple.
- Clean and inspect the burner and pilot light.
Three to Five Yearly Maintenance
Water quality affects the lifespan of your Thermann HWS. Areas with hard water supply and high total dissolved solids (TDS), should follow a more frequent maintenance schedule to ensure everything runs smoothly.
- Replace the PTR Valve: This is essential in managing pressure and temperature. Swapping it out every few years ensures it continues to function properly and safely.
- Replace the Anode: The anode rod helps prevent rust and corrosion inside your hot water unit. Replacing it regularly can extend the life of your system.
- Drain and Flush the Water Tank: This step helps remove sediment and mineral build-up from the bottom of the tank. Draining and flushing the tank can improve efficiency and prevent damage.
When to Call a Professional Plumber
While some troubleshooting can be done by homeowners, certain situations require professional assistance. Our licensed plumbers and hot water installation specialists can assist with any common problems, or when:
- You’re unable to reignite your gas water heater
- For any electrical issues with your electric hot water system
- If you notice continuous leaks
- If your hot water system is more than ten years old and showing signs of failure. It’s likely time for a new hot water system.
- Error codes on continuous flow systems
Remember, Thermann hot water systems come with a warranty, including a one-year parts and labor warranty and an extended tank failure warranty. Always refer to your warranty terms before attempting any repairs. Our hot water repair plumbers are right around the corner for all Logan and Brisbane South homeowners.
Conclusion
Troubleshooting your Thermann hot water system doesn’t have to be daunting. By following this guide, you can identify and resolve many common issues, ensuring a steady supply of hot water for your home or business. Regular maintenance and prompt attention to problems will help keep your system running efficiently for years to come. If you’re ever in doubt or face a persistent issue, don’t hesitate to contact our plumbers for expert assistance.