Condensate Pump Failure
The boiler locks out and there's water around the pump unit near the appliance..
The boiler locks out and there's water around the pump unit near the appliance.
What is actually going on
The boiler locks out and there's water around the pump unit near the appliance.
The realistic causes, in order
A blocked pump reservoir, usually acidic sludge from condensate A failed float switch, so the pump never starts A discharge line that has become blocked or has frozen at its termination
What we test on site
Pump operation, reservoir condition and float movement Discharge route and termination Whether a gravity condensate route is achievable, which removes the pump dependency
Worth checking today if you have a failed condensate pump
- Check whether the pump makes any noise when the boiler runs
- Look for water around the pump housing
- Boiler condensate is mildly acidic. Any discharge into a soakaway or drain should be arranged to manufacturer guidance rather than run into the garden.
Who does the work
- Gas Safe registered engineers — registration 554328
- Worcester Bosch accredited installer
- John The Plumb Ltd, company registration 10026483
Get a failed condensate pump diagnosed properly
Pump replacement is quick; where gravity drainage is possible we usually recommend removing the pump from the equation.
Questions we get asked
What causes a failed condensate pump on a gas boiler?
A blocked pump reservoir, usually acidic sludge from condensate
What normally puts a failed condensate pump right?
Pump replacement is quick; where gravity drainage is possible we usually recommend removing the pump from the equation.
Is it safe to keep using the system with a failed condensate pump?
Boiler condensate is mildly acidic. Any discharge into a soakaway or drain should be arranged to manufacturer guidance rather than run into the garden.