Trane ReliaTel Diagnostic Manual page 29

What the readings mean
System- RTRM-J6-9.
ON – System is powered up. This output should be on whenever the green RTRM System LED is
on. Incidentally, this LED may flicker as part of its normal function on older version boards.
OFF – If 0 VDC is seen, the RTRM does not have power, the output wiring is shorted, or there is an
internal failure. Remove any wires connected to this terminal and check again.
PULSING – Unit is in the TEST mode. Also during the TEST mode the System LED will pulse on
and off. This output does not provide any diagnostic information, but is a good place to confirm
that voltage readings taken are consistent with what should be seen on other outputs.
RT-SVD03G-EN
System on LED
Part Number – SEN01522
ReliaTel Refrigeration Module (RTRM)
Mo
Colon pulses
when input is connected
System Diagnostic
AM
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