Triangle Tube
Insufficient DHW Capacity / Recovery
Domestic hot water runs out quickly; Triangle Tube water heater recovers slowly or cannot keep up with demand.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Undersized water heater or indirect tank, Scaled tank coil or plate exchanger, Low gas input, Incorrect priority settings
How to Fix / Troubleshooting
Safety: Avoid raising temperature excessively to compensate for capacity issues.
- 1. Compare demand to capacity: Estimate your hot water usage (showers, appliances) and compare to the Triangle Tube unit's rated output. Heavy simultaneous use may exceed capacity.
- 2. Check DHW priority: In the control menu, ensure DHW priority is enabled so the boiler focuses on reheating the tank when needed.
- 3. Descale DHW coil/plate: Have a technician flush the indirect tank coil or combi plate heat exchanger to restore heat transfer.
- 4. Verify gas input: A gas technician should confirm that inlet pressure and orifice sizing match the rating plate.
- 5. Consider upgrades: If usage has increased (e.g., added bathrooms), you may need a larger indirect tank or higher-capacity Triangle Tube unit.
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Repair Difficulty
Medium
3/5
Required Part
Indirect Tank Coil Heat Exchanger
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