Assertion: heat pump's feature | /r/CapableOf | stop the fan
Facets:
value: for a period of several minutes
type: TEMPORAL
value: in order to rid
type: PURPOSE
value: from time
type: TEMPORAL
Source sentences:
text: Another feature of air source heat pumps (ASHPs) external heat exchangers is their need to stop the fan from time to time for a period of several minutes in order to get rid of frost that accumulates in the outdoor unit in the heating mode.