OK, Have a 5530 with 10 hours on it and I am getting no temp hand movement at all. All other gauges working fine so not a fuse. Any ideas as to what's causing this short of a bad gauge?
Quick check for any single wire electric gauge(temp,fuel oil press). Find the wire where it attaches to the sender,remove it if need be. With the key on, flash it to ground for a split second while observing the gauge. If the circuit is good, the needle will move. If it doesn't move hold it for a bit longer, as some gauges need a few seconds to react, where others can move so quickly you can damage the unit. If the needle does move, your issue is with the sender, or a poor resistance match between gauge and sender. Either way it's a warranty issue with only 10 hrs