While you wait for answers, we may have found some information which could help you.
Click here for Moffat Oven Fan NotBuilt in wall 1970's Moffat oven doesn't heat up?
Moffat MSS600 - Grill not working?
moffat msf 615 oven door / how to fix?
rcd trips when oven switched on it is a moffat oven?
Moffat electric oven MSF615?
can the fan be replaced in moffat msf615?