Grant Vortex Eco - Fault Finding and Troubleshooting; Burner Fault Finding Chart

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Fault Finding
12 Fault Finding
1
2.1 Burner Fault Finding Chart
1. Burner fails to start – no flame – no lock out
Symptoms Possible Causes Actions
Motor fails to run No electrical supply to boiler Check On/Off switch is On - mains neon is lit
Lock-out light not lit Fuse has blown Check or replace fuse
If fuse has blown - check reason for failure
Boiler thermostat not calling Adjust boiler thermostat to call for heat
Heating controls are not calling Adjust programmer & room thermostat to call
Overheat thermostat has operated Check and reset overheat thermostat if required
If operated - check reason for operation
No power to burner Check for 230V at control box mains terminals
Control box faulty Replace faulty control box
2. Burner fails to start – no flame – goes to lock out
Symptoms Possible Causes Actions
Motor fails to run No power to burner motor Check for 230V at motor plug terminals
Burner lock-out Burner motor capacitor faulty Check and replace if necessary
Burner motor faulty Replace burner motor
Burner motor stalled
Seized oil pump Check and replace faulty oil pump