BoilerFaultCodesWhat the manual says
Manufacturer manualShutdown input active or frost protection active
From this model's manual
Verified against the Main/Main Maineco Combi System installation & service manual.
DIY fix possible
Check if any external safety cut-outs or thermostats connected to the boiler have been triggered.Ensure the external condensate pipe is not frozen if this is occurring during cold winter weather.Try resetting the boiler using its reset button to see if the safety lock clears.
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Related fault codes
All 61 fault codes on the MainEco
Seeing a different code? Every code this model can display, in one place.
5v[05v[15v[25v[75v[105v[125v[135v[155v[165v[175v[185v[195v[205v[215v[225v[25Code ACode BCode CCommunication faulte[00e[01e[02e[03e[04e[05e[06e[07e[08e[09e10e11e12e14e16e17e34e35e36e37e38e39e40e41Error code 1Error code 2Error code 3Error code 4Error code 5Error code 6Fan faultFlame lossIgnition faultMiscellaneousOverheat temperature protectionParameter errorReinitialisationResetting...Sensor errorTemperature protection