It depends on whether your room is sealed and well ventilated, because the fan mainly removes carbon dioxide and carbon monoxide produced by burning liquefied gas outdoors to protect the personal safety of users. Under normal circumstances, the fan is broken. The water heater must not catch fire. As a safety precaution, I suggest the building owner repair it. There have been many cases of carbon monoxide poisoning in recent years.
Can the power vent water heater be used if the vent motor is broken?
Introduction Can the power vent water heater be used if its vent motor is broken? It depends on whether your room is airtight and well ventilated, because the fan mainly removes carbon dioxide produced by burning liquefied gas.