User Instructions for GECO GH21TA controller
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Page 31 Edition I
19.06.2013
Alarm 1
– Blown fuse/temperature limiter tripped
This alarm occurs when the controller detects a zero signal from the power supply for two
seconds. This may be caused by a blown fuse or tripped temperature limiter.
Button
– goes to service data, and the controller is stopped.
Alarm 2
- Damage of water outlet boiler temperature sensor
This alarm occurs when the NTC 2.2k sensor for testing the temperature of water from the
boiler is damaged or not properly connected.
Button
– goes to service data, and the controller is stopped.