10
Fault finding
Greenstar Danesmoor Utility
ErP
– 6 720 813 330 (2014/09)
6.1
Accessing reset buttons
Reset buttons [A, B & C]
▶ To remove upper front panel pull panel squarely away from
the front of the boiler.
▶ To replace, realign ball studs and push back into place.
Burner lockout reset button [D]
▶ Pull top panel squarely upwards to remove.
▶ To replace, realign ball studs and push back into place.
Always keep pressure to the edges of the panels to avoid
accidental damage.
Fig. 4
6.2
Fault conditions
If the boiler fails to operate.
▶ Check the oil level in the oil storage tank.
▶ Check there is not a power cut and the power supply to the
boiler is switched on.
▶ Check the programmer is set to on.
▶ Check the room thermostat and where fitted, the radiator
thermostats are set correctly.
▶ Remove upper front panel and check the thermostat
control knob [A] is turned on.
If the above checks prove satisfactory and the boiler remains
off, then a safety device in the boiler control system may have
been activated to prevent the boiler from operating.
Automatic reset
▶ An excessive boiler operating temperature can activate a
thermostat to switch off the boiler. This thermostat
automatically resets when the boiler has cooled down
sufficiently.
Do not attempt to repeatedly start the boiler using the
manual reset buttons as persistent failure indicates a fault
requiring the attention of a service engineer.
Boiler overheat (manual reset)
▶ Should the boiler temperature rise beyond the automatic
reset level, a high limit thermostat will switch the boiler off,
indicated by button [B] standing proud. When the boiler
has cooled down, press and release [B] to reset the
thermostat.
Flue overheat (manual reset)
▶ Excessive combustion gas temperatures can activate a
thermostat to switch off the boiler, indicated by button [C]
standing proud. Press and release [C] to reset thermostat.
Burner lockout (manual reset)
▶ Flame failure, for any reason, will cause the burner to go
safely to a lockout condition.
▶ Remove the boiler top panel and check the lockout button
[D]. If this is illuminated it indicates a "lockout" condition.
To cancel lockout, wait 2 minutes, then press and release
button [D].
6 720 813 330-04.1TL