CPSC campaign 08397
Hazard
The pressure switch could have an internal defect that could fail to shut down the boilers under vent or air inlet blockage. This switch defect could allow the boilers to produce excessive levels of carbon monoxide, posing a risk of carbon monoxide poisoning to consumers.
Remedy
Consumers who have not already been contacted, should contact their installer immediately for a free safety inspection and repair, if necessary.
The text above is quoted verbatim from the CPSC record. Confirm the affected units and the remedy with the manufacturer or CPSC. Recall data may be incomplete, delayed, or superseded.