I am working on a trane rtaa080. I am getting a 674 unknown diagnostic. has anyone ever seen this? Thanks for any input.
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I am working on a trane rtaa080. I am getting a 674 unknown diagnostic. has anyone ever seen this? Thanks for any input.
This should be moved to the chiller forum.
Actually, that fault is b74. This unit must have been manufactured between March 1, 1997 and April 21, 1997. During that time period, they had a bug in the software for the CLD. It should read "Cond Fan Vari Speed Fault Ckt 2". The fan inverter is in a fault and needs to be checked.
KIT06170 is a replacement eprom kit for the clear language display to resolve the unknown diagnostic.
Moved to chiller forum.
Thank you, I will proceed in this direction and add it to my notes.