Red light went on on one of my Ayre MX-R amps


Please advise? My owners manual is in hard place to access. I unplugged the amp and plugged it back in and now it seems to be fine - should i be concerned?
solecky
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I unplugged ny MX-R's last night. Blue to green when turned to stand by. When unplugged I think they switched to Red=>violet=>orange=>green (I think)=>nothing.
I just called Ayre and left a message, now the one amp keeps resetting itself to idle when I have them both off idle, it must be over heating. It has done this at least 4 time in one week now. Something is wrong :(