Low
Code A on Main MainEco

Your boiler is reminding you that it is due for its regular annual service to keep it running safely and efficiently.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Maintenance message

From this model's manual
Verified against the Main/Main Maineco Combi System installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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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[115v[125v[135v[155v[165v[175v[185v[195v[205v[215v[225v[25Code 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

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