Is the Adjudicator liable to the Parties for an action or a failure to take action?

Is the Adjudicator liable to the Parties for an action or a failure to take action?

The Adjudicator, his employees and agents are not liable to the Parties for any action or failure to take action in an adjudication unless the action or failure to take action was in bad faith (see Clause W1.2(5)).