The Engineer wants to shut the unit down as it's unsafe. The engineer is not here to service the appliance, He's here to replace the meter. I've had trouble to get it serviced in the past due to it being old. It's a heater duct system and the engineer thinks that the duct system is old and needs to be replaced by raditators.
The engineer has given it Hazard B, Appliance shut off for safety due to the flame picture.
Can you confirm to me that this conversation with you has cost 38euro?