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ECOTEC PLUS 637 VU376/5-5 R1
VUW 316/5-5 R4
The secondary heat exchanger is only required in a combi boiler and allows the heat to be transferred between one closed system and another
🔍 Commonly used with models such as:
Vaillant VUW 242 E (1995-1999)
Vaillant Printed Circuit Board 20036861 GAS VALVE ECOTEC PLUS 637 VU376/5-5 R1Vaillant printed circuit board for ecoTEC VU (condensing) boilers. The control centre of a boiler, the printed circuit board, monitors and controls every process occurring throughout a system via switches, thermostats and sensors. It enforces safety measures too, shutting down boiler functions if internal readings indicate any type of fault, such as high pressure or low water levels. Fits the ecoTEC plus 415 VU 156 2 0H, ecoTEC plus 428 VU 286 2 0H,
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