Boiler's condensate pipe repeatedly freezes in cold weather, causing lockouts or shutdowns.

Safety: Do not use boiling water on plastic pipes; they can deform or split.

• Locate frozen section: Feel along the external condensate pipe for very cold, solid sections.
• Thaw gently: Pour warm (not boiling) water over the frozen section or use warm towels to thaw the ice.
• Reset boiler: Once thawed, reset the Biasi boiler and check for normal operation.
• Improve insulation: Lag the external pipe with suitable weatherproof insulation and, if possible, increase the pipe diameter and reduce external run length. An engineer can reroute the pipe if needed.