User Manual

13
Selecting Fan Relay Delay – “Frd”
To select the Fan Relay Delay setting, in normal mode, press the Next button twice to get to “Con” or the Configuration menu. Then
press the Enter button to enter the Con menu. The eighth selection is the “FrD” or Fan Relay Delay. Press Next seven times to get to
“FrD” then press Enter. If the delay is “OFF” (disabled) press Next to change it to 1, 3, 5, or 10 minutes (flashing) then press Enter to
confirm the change (solid) and press Enter again to return to “FrD” in the Con menu. Press Next until “End” is displayed then press
Enter to return to normal operation.
Selecting Fan Relay Run Time – “Frr”
To select the Fan Minimum Runtime setting, in normal mode, press the Next button twice to get to “Con” or the Configuration menu.
Then press the Enter button to enter the Con menu. The ninth selection is the “Frr” or Fan Minimum Run Time. Press Next eight
times to get to “Frr” then press Enter. If the runtime is “OFF” (disabled) press Next to change it to 3, 5, 10 or 15 minutes (flashing) then
press Enter to confirm the change (solid) and press Enter again to return to “run” in the Con menu. Press Next until “End” is displayed
then press Enter to return to normal operation.
Selecting Fan Relay Latching Option – “FrL”
To select the Fan Relay Latching Option, in normal mode, push the Next button twice to get to “Con” or the Configuration menu. Then
push the Enter button to enter the Con menu. The tenth selection is the “FrL” or Fan Relay Latching Option. Push Next nine times to
get to “FrL” then Enter. If latching is “OFF” push Next to turn it to “ON” (flashing) then push Enter to confirm the change (solid) and
push Enter again to return to “FrL” in the Con menu. Push Next until “End” is displayed then push Enter to get back to normal
operation.
Selecting Trouble Fan Setting Option – “tFS”
To select the Trouble Fan Setting Option, in normal mode, push the Next button to get to “Con” or the Configuration menu. Then
push the Enter button to enter the Con menu. The eleventh selection is the “tFS” or Trouble Fan Setting Option. Push Next ten times
to get to “tFS” then Enter. If Trouble Fan Setting is “OFF” push Next to turn it to “ON” (flashing) then push Enter to confirm the change
(solid) and push Enter again to return to “tFS” in the Con menu. Push Next until “End” is displayed then push Enter to get back to
normal operation.
Selecting 4-20 mA Output Option – “420”
To select the 4-20 mA Output Option, in normal mode, press the Next button twice to get to “Con” or the Configuration menu. Then
press the Enter button to enter the Con menu. The twelfth selection is the “420” or 4-20mA Output Option. Push Next eleven times to
get to “420” then press Enter. If the 4-20 mA is “On” press Next to turn it to “OFF” (flashing) then press Enter to confirm the change
(solid) and press Enter again to return to “420” in the Con menu. Press Next until “End” is displayed then press Enter to return to
normal operation.
Onboard Diagnostics
The GD-12 monitors all critical functions of the unit through software diagnostics that continuously test and verify unit operations. If a
problem is found, the unit will switch to a fail-safe/error mode or trouble condition. In this error mode, the Alarm relay will be activated,
the 4-20 mA current loop will go to 24 mA, the unit will display the error code, the green status indicator LED light will flash and the
buzzer will chirp intermittently. The Fan relay will also engage if the Trouble Fan Setting Option is set to “ON”. This is a safety