Manual 2100-559
Page
6 of 6
**
NOTE
: Any system start-up conducted with indoor ambient temperatures lower than 56°F or above
86°F will experience an internal Low-Temperature or High-Temperature alarm. This will not affect
normal operation, and can be cleared easily. See the
Advanced Programming
section for further
information. Start-up procedures conducted with extreme temperatures indoors/outdoors may cause a
“SERVICE” warning flashing on the face of the controller. This also will not affect normal operation, and
should clear itself once interior temperatures and refrigerant pressures normalize.
***NOTE
: ECU-Series Controller will become sluggish/inoperable at extremely low temperatures
(< 20°F). Care should be taken to warm controller before initial start-up.
ECU-Series Controller
should be fully operational at this point. For further controller enhancement or
operation detail, please consult the
Advanced Programming
section.
