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Kurt McconnellAug 25, 2025
How to fix a TERMA Heater when the LED diode is pulsing WHITE & RED or WHITE & YELLOW?
- HHeather ReillyAug 26, 2025
If the LED diode on your TERMA Heater is pulsing WHITE and RED or WHITE and YELLOW, it indicates that the radiator is not warming up quickly enough. First, check that the heating element's output is adequate for the radiator size. If you have a dual fuel model, ensure the heated agent is flowing correctly and not returning to the central heating system; if so, close one of the valves (flow or return). For a side connection, close the upper valve. If the problem continues, contact Your dealer.
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