This can occur, for example, in the case of immediate lose of power voltage for pump no sweeping of received fluid from the collector or long term in the absence of receipt of such heat energy from the hot water buffer due to go on holiday .
Hii inaweza kutokea, kwa mfano, katika kesi ya haraka kupoteza nguvu voltage kwa ajili ya pampu ya maji hakuna yanayojitokeza kupokea kutoka mtoza au muda mrefu kutokana na kukosekana kwa ofisi ya nishati vile joto kutoka buffer maji ya moto kutokana na kwenda likizo .