Boiler displays A17, condensate may be visible around base of boiler

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Blocked condensate trap, Failed condensate pump, Kinked or frozen condensate discharge pipe, Faulty condensate level switch

Safety: Condensate is mildly acidic. Wear gloves and eye protection when handling. Isolate power before working on the pump.

Steps:

Check the condensate discharge pipe outside for freezing or blockage; thaw and clear as needed.
Remove and clean the condensate trap according to the IVT manual, ensuring correct reassembly and sealing.
If a condensate pump is installed, verify that it runs when the tank fills; replace the pump if it fails.
Inspect the condensate level switch and wiring; replace if stuck or faulty.

Medium 3/5

Condensate Trap / Condensate Pump

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