Pete Gavey, chief ambulance officer, said the high number of calls is putting pressure on the service and affecting their ability to respond to genuine emergencies.
Calls are taking longer to deal with because of the preparation and the personal protective equipment needed to respond now, too.
He said: ‘Somebody should only call for a medical emergency, things like a heart attack, like severe burns, major trauma, loss of consciousness, stroke, severe bleeding or severe breathing difficulties.’
One of the symptoms of Covid-19 is a shortness of breath but Mr Gavey stressed people should only dial 999 if their condition is severe.
Last month a similar call was issued urging people not to contact 999 if they think they have the coronavirus but use the government hotline 445566.
Mr Gavey also urged Islanders with injuries that need immediate attention to visit the new Urgent Treatment Centre at the Hospital.
‘This is for non life-threatening medical issues such as fractures, broken bones or more severe mental health concerns where the emergency department will be screen patients for Covid-19 symptoms prior to treatment,’ Mr Gavey said.
‘It’s vital we work together to preserve emergency assets for those that really need them so that we can respond accordingly. Please think before you dial 999.’