I noticed a very small amount of mould just starting on the fins of my split system air conditioning, they’re professionally cleaned by Sanitair twice a year or when necessary. Is there anything else that needs to be done to maintain these air conditioners?

From Nicole Bijlsma and Dr. Sandeep Gupta – Preventing Mould After Floods & Extreme Weather

I noticed a very small amount of mould just starting on the fins of my split system air conditioning, they’re professionally cleaned by Sanitair twice a year or when necessary. Is there anything else that needs to be done to maintain these air conditioners?