Trane RTAA-100, Installation & Maintenance Manual

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RTAA-SVX01A-EN 93
Controls Interface
Diagnostics
If there are no diagnostic messages, the selected menu item will be
displayed continuously. If the Diagnostics key is pressed and there are no
active diagnostics, the readout on the display will be
NO ACTIVE DIAGNOSTICS PRESENT
When a system malfunction occurs, one of the following appropriate
diagnostic messages will be displayed:
***A MACHINE SHUTDOWN HAS OCCURRED!***
A MACHINE SHUTDOWN OCCURRED
BUT HAS CLEARED “PRESS (NEXT)”
***A CIRCUIT SHUTDOWN HAS OCCURRED!***
A CIRCUIT SHUTDOWN OCCURRED
BUT HAS CLEARED “PRESS (NEXT)”
***INFORMATIONAL WARNING***
AN INFORMATIONAL WARNING OCCURRED.
BUT HAS CLEARED “PRESS (NEXT)”
When a Circuit Shutdown – Manual Reset (CMR) or a Machine Shutdown –
Manual Reset (MMR) occurs, the red LED to the right of the display will flash.
Otherwise this alarm LED is deenergized.
If more than one diagnostic is present, only the highest priority active
diagnostic will be explained in detail. For example, if three diagnostics occur
in the following order before the operator returns – IFW, MMR, CMR – the
display will read
*** A MACHINE SHUTDOWN HAS OCCURRED! ***
because the MMR has the highest priority. However, as the operator moves
through the diagnostic menu to the “Last Diagnostic”, the [Diagnostic
Description] will show the CMR diagnostic as well as the IFW. If the “Next”
key is pressed, the display will show all other active and historic diagnostics.
The active diagnostic priorities, listed from highest to lowest are:
Machine Shutdown –
Manual Reset (MMR)
Machine Shutdown –
Automatic Reset (MAR)
Circuit Shutdown –
Manual Rest (CMR)
Circuit Shutdown –
Automatic Reset (CAR)
Informational Warning (IFW)
Use the Next key to enter the main diagnostic menu, where diagnostics can
be cleared.
Important: Record diagnostic before pressing enter to clear.