TemperZone UC8 - Display Messages and Operational Status; LED Display Codes and Their Meanings

Temperzone UC8 Operation, OSA models with inverter, issue 1
Page 17 of 27
9. Display messages
The following messages can be seen on the LED display.
Display
Meaning
Notes / factory setting
UC8
Controller name
Shown only after power-on
6.1.2-55
Software version and build number
HDE5A61E
Software identification code
dELAY
Start-up random delay time
●
Ready, normal operation
−
Unit is OFF by Remote On/Off signal
HOLd
The compressor is held-on or held-off by a timer
diFF-P
The pressure differential is too high for the inverter
compressor to start