Technical data

35
The alarm screen indicates both outputs failed to control the Supply Temperature. At this
point, the service personnel will need to correct the problem and then select the Reset
Pump/Fan button to restart the GPC Plus Lead/Lag control sequence.
Although the button and alarm indicators show Lead Pump / Fan indicators, the outputs
are not limited to those types of control. You just need to understand that the Lead Pump
/ Fan controls AHU #1 in this sample and Standby Pump / Fan controls AHU #2.