Alarm Conditions; Power Outage; Boiler Burnout Detection - Geco GH11RA User Instructions

USER INSTRUCTIONS GH11RA

5.5. Alarm Conditions

The Controller uses 8 different alarm conditions. In each alarm condition, the Controller displays the
alarm number and activates the alarm sound output. In case of several alarm conditions occurring
simultaneously, their numbers are displayed in sequence. You can exit an alarm condition only by pressing
. This does not include the AL12 alarm condition.
Alarm conditions:
• → STB activated or fuse blown
AL1
• → Boiler water outlet temperature sensor failure
AL2
• → Feeder temperature sensor failure
AL3
• → DHW/return temperature sensor failure
AL4
• → No feeder rotation / reed switch failure
AL9
• → Maximum feeder temperature exceeded
AL11
• → Boiler overheating
AL12
• → Boiler burnout
AL13

5.6. Power Outage

After a power outage the Controller starts to reactivate according to the condition it was in before the
power down. The Controller waits 1 minute to stabilise the mains power parameters, and then restores
operation with the previously programmed settings.
During the waiting period, the display shows time in seconds remaining until the end of the period,
along with indication of its condition before the power outage:
•
blinking "A" for AUTO mode,
•
blinking "P" for SUSTAIN mode,
•
blinking "r" for MANUAL mode.
Respective indicators (AUTO

5.7. Boiler Burnout Detection

5.1.7. No Fuel
If during automatic operation the boiler outlet water temperature remains below the F08 setting
for a period of time set in the F09 setting, then the Controller considers the boiler as "burned out" and
enters the AL13 alarm condition.
5.1.8. Sudden Drop of Outlet Water Temperature
If during automatic operation the boiler outlet water temperature drops by 10°C, and during that
dropping period the temperature does not rise by 4°C, then the SH and DHW pumps are switched off, and
the Controller goes into the burnout detection mode.
Wydanie I
or SUSTAIN ) are blinking along with the letters.
STRONA 10
STYCZEŃ 2010