Grant
Vortex Blue 21-26kW
Heat Only Boiler
26kW
2016-present
ErP A
23 fault codes
<p>The Vortex Blue 21-26kW is a heat-only (regular) boiler from Grant, available at 26kW output. Produced 2016-present.</p>
Vortex Blue 21-26kW Fault Codes 23
Code
Description
Severity
Type
BURNER LOCKOUT
Burner Lockout
The oil burner has gone to lockout — the red lockout light on the burner control…
High
DIY
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E01
Internal Control Fault
The boiler's internal control electronics have detected a fault.
High
Engineer
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EE1
High Pressure / Pump Failure / Airlock
On Grant heat pump models, EE1 indicates high pressure caused by circulating pump failure or an…
High
Engineer
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NO FUEL
No Oil Supply / Empty Tank
The burner cannot obtain an adequate supply of oil fuel. The tank may be empty, the…
High
DIY
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OVERHEAT
Overheat Thermostat Activated
The boiler's overheat safety thermostat has tripped. On Grant oil boilers this usually means the boiler…
High
Engineer
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PP1
Flow/Return Temperature Sensor Fault
The inlet (return) water temperature sensor has failed on Grant heat pump models.
Medium
Engineer
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RED LIGHT STEADY
UV Sensor / Gas Valve Fault (Vortex Blue)
On Grant Vortex Blue oil burners, a steady red light indicates the UV sensor is defective…
High
Engineer
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SMOKE/FLUE FAULT
Visible Smoke or High Smoke Number
Black or grey smoke visible from the flue, or a high smoke number on combustion testing.…
High
Engineer
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