Cointra • Founded 1952 • Spain
Repair and spare parts for Cointra boilers in Madrid
Specialized technical service for Cointra boilers and water heaters in Madrid. Magister, Nova ranges and instant gas water heaters, with quick diagnostics and original spare parts.
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Cointra is a Spanish company founded in 1952, specialized in gas water heaters. It is the leading brand of instant gas water heaters in Spain. It also produces wall-mounted heating boilers. Its equipment is especially common in older homes in Madrid that still use natural gas for DHW.
Cointra product range
Instantaneous water heaters
- Thdb series - Instantaneous water heater for butane/propane gas. The most commonly installed in homes without central heating.
- Discovery – High-power sealed water heater, current range.
- Optima N – Instantaneous natural gas water heater, thermostatic control.
- Stardion – Electronic ignition water heater, low standby consumption.
Heating boilers
- Magister – wall-mounted combi boiler, forced draught. Standard residential range.
- Nova – Condensing combi boiler, class A. Current range with highest efficiency.
Most common fault codes
| Code | Meaning | Common cause |
|---|---|---|
| E1 | Ignition fault | Gas cut off, electrode or gas valve |
| E2 | Overtemperature | Limit thermostat activated |
| E3 | NTC sensor | Defective temperature sensor |
| E5 | Fan fault | Blocked fan (forced draught boilers) |
| E7 | Low pressure | Water below minimum limit |
Cointra spare parts
- PCBs for Cointra water heaters and boilers
- Thermocouples and ionisation electrodes
- Gas valves and NTC sensors
- Circulator pumps for heating models
- Heat exchangers and gaskets
Frequently Asked Questions
Cointra is mainly known for its gas water heaters, but it also manufactures heating boilers (Magister and Nova ranges). Cointra water heaters are the most common equipment in homes in Madrid that have natural gas but no central heating.
The most common causes are: defective thermocouple (in models with manual pilot), dirty ignition electrode (in piezoelectric models), gas valve blocked or simply gas cut offIf the pilot light ignites but goes out when the button is released, it is almost always the thermocouple.
Gas water heaters require an annual inspection. Atmospheric water heaters (with chimney flue) also need an inspection of the flue duct each year, as soot accumulation can be dangerous.