Potterton Assure Combi fault codes
Built 2019 onwards
Current range. Adds several codes the Promax does not use, including the E3xx voltage and frequency group.
Codes on the Assure Combi follow the same Potterton scheme as the rest of the range. Where a code behaves differently on this generation, the code page says so.
Fault codes
All Potterton codes that apply to this model.
- E133Ignition failed and the appliance has locked out. On a Promax the condensate run is the first thing to check in cold weather.Get it checked
- E119The appliance has stopped because system pressure is too low. Refilling to 1.2 bar clears it, but on an old system the reason it fell matters more.Get it checked
- E160The fan is not running at the speed the appliance expects, so the burner is locked out. This needs an engineer.Get it checked
- E128The flame was established and then repeatedly lost. That is a different fault from failing to light and it points somewhere else.Get it checked
- E130The flue gas thermostat has tripped on high temperature. It usually means heat is not getting into the water where it belongs.Get it checked
- E117System pressure has climbed above about 2.9 bar. Either it has been overfilled or the expansion vessel has stopped working.Get it checked