Clicking noise from D-180

[johndavies]

I have just installed my D-180 and D-100 system and everything works fine except there is a distinct mechanical click coming from the D-180 every 4-5 seconds. The D-100 is totally silent. Is this a normal thing or a problem? (This is an actual click from the unit NOT an electrical noise heard thru the headphones) I can find nothing in the literature or on the forum.
John

 

[Alfio]

It's normal, all EMS units do that (or EMS portion of the D-180). I believe it is a heater element being cycled to keep a constant temperature for some reference thingy. Check the archives.

 

[dynonsupport]

It's normal. All the EMS units do this as part of a calibration they do. It's not a heater.