What the manual says
Manufacturer manualNormal operating position
From this model's manual
Verified against the Grant/Grant Vortex Eco installation & service manual.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
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All 77 fault codes on the Vortex Eco
Seeing a different code? Every code this model can display, in one place.
10121821.02226.0313636.04454616992116143198232286348396429594727728729A1.2A1.3A2.2A3.2Blinking REDBURNER indicator flashingBURNER indicator Slow flashBurner lock-outBURNER Slow flashCH PUMP Fast flashCH PUMP indicator Fast flashCH PUMP indicator Slow flashCH PUMP Slow flashConstant REDDHW PUMP (FLASHING)DHW PUMP Fast flashDHW PUMP indicator Fast flashDHW PUMP indicator FLASHINGDHW PUMP indicator Slow flashDHW PUMP Slow flashFast flashFlashes redFlashes red/greenGREEN blinkingGREEN blinking (0.5s)GREEN ORANGE blinking (0.5s)GREEN, RED blinkingGreen/Red flashingLED offLock-outLock-out (light on)LockoutLockout button litLOW PRESSURELOW PRESSURE indicator litOFFORANGEORANGE blinkingOverheatOverheat thermostatREDRED blinkingRED blinking (0.5s)RED fast blinkingRED fast blinking (0.2s)RED flashing (Reset button)RED steady ONRED, GREEN blinking invertedRED, ORANGE blinking invertedSlow flash