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Eliminar falhas CoolMatic
258
12 Eliminar falhas
Significado do LED vermelho (fig. 5 2, página 5, fig. 6 2, página 5)
Em caso de falhas de funcionamento, o LED acende várias vezes. O número
de impulsos depende do tipo de falha.
Cada iluminação dura respetivamente um quarto de segundo. No final de
cada série de impulsos surge uma pausa. A sequência para a falha é repe-
tida a cada quatro segundos.
Número de
impulsos
luminosos
Falha Possível causa
1 Tensão de alimentação A tensão de alimentação está fora do intervalo
configurado.
2 Sobrecarga do ventila-
dor
O ventilador carrega a unidade de eletrónica
com mais de 1 A.
3 O motor não arranca O rotor está fixo.
A pressão diferencial no sistema de refrigera-
ção é demasiado elevada (> 5 bar).
4 A rotação é demasiado
baixa
Se o sistema de refrigeração estiver dema-
siado sobrecarregado, é impossível manter a
rotação mínima do motor de 1850 rpm.
5 Sobreaquecimento da
unidade eletrónica
Se o sistema de refrigeração estiver dema-
siado sobrecarregado ou em caso da tempe-
ratura estar demasiado elevada, o sistema
eletrónico aquece demasiado.
Permanente-
mente
Falha NTC NTC com defeito.
258


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