User Instructions for GECO GH21TA controller
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Page 7 Edition I
19.06.2013
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Emergency work
– Emergency work allows the boiler to work in case of damage to the
feeder and or fan TRIAC, until servicing is possible.
5.1.
Standby mode
After the installation procedure described in the previous chapter, the GH21TA driver
is turned on standby. In this mode, the screen displays a message about how to select
automatic or manual mode.
When the controller is in standby mode, you can switch to manual mode using the
button
. During normal operation, it is possible to return the controller to standby mode
at any time, by pressing the button
.
In standby mode, all outputs and the alarm sound signal are disabled. When the controller is
switched to automatic mode, the display shows the actual temperature of the water in the
boiler, the set temperature, and information about the controller mode.
5.2.
Automatic mode - heating
In automatic mode, the controller implements the control algorithm for the chosen heating
schema, according to the heating regulation option chosen. Basic information about the
system, displayed on the main screen, includes current and set boiler temperature, and
operating mode. The user may choose from three heating regulation options: Standard, grate
mode and pump only.
