So, RN tested out fine, but R1 - open circuit, R2 - open circuit ! Oh joy. At this point the current tenant piped up and said "Should I have mentioned some of the sockets were getting hot ?!"
Anyway according to the Codebreakers guide I should be giving this a C2 (Actually I'm thinking of giving it an FI), and handing the report to the landlord. I admit I don't get many outright failures, but this one obviously is.
In this case, i see no reason to stray from the codebreakers advice.
also as mentioned, some sockets getting hot, leads me to think there is a very high chance of some overloaded cables or terminals.
It is potentially dangerous.
do you need to do further investigation to figure out if it is dangerous?
as a temporary
but really it needs marking down as a failure so it gets repaired.