The oven is model number HBA11B150A. Every time the door is opened we get a face full of steam - most unpleasant.
Is this normal?

Cooktop model nuber - unknown. It is a four burner type - one of which is a wok burner.
It is not possible to vary the heat of the three normal burners - output is the same regardless of knob position.

Comments please bearing in mind:

1. Using bottle gas for the cook top
2. We are renting the house ...