Unico i Series User Manual

Error
Code
Priority
*
Meaning
LEDs
DL1
DL2
DL3
DL4
DL5
-
(Normal Operation)
Outdoor Unit (ODU) has power





-
(Normal Operation)
Outdoor Unit (ODU) has power. Indoor units ready to run.





-
(Factory Test Mode) (DL1 blinks)
Remove jumper JP1 on ODU Main PCB to resume normal operation





0
Unit is being programmed, or Firmware is faulty





1
Communication fault with indoor unit(s)





2
Indoor Unit(s) fault





3
PFC (Power factor controller) fault





4
Outdoor fan power module temperature too high





5
Outdoor fan overcurrent





6
Compressor power module temperature too high





7
Compressor current too high





8
OCT (Outdoor Coil Temperature) probe sensor fault





9
OAT (Outdoor Air Temperature) probe sensor fault





10
CDT (Compressor Discharge Temperature) probe sensor fault





11
WTT A probe sensor fault





12
NTT A probe sensor fault





13
WTT B probe sensor fault





14
NTT B probe sensor fault





15
WTT C probe sensor fault





16
NTT C probe sensor fault





17
WTT D probe sensor fault





18
NTT D probe sensor fault





19
CTS (Compressor Top Shell) probe sensor fault





100
Invalid Indoor-Outdoor Unit Combination





*
Error #0 = Lowest priority. If more than one error is present, only
the highest priority error is shown.
WTT = Wide Tube Temperature = Suction line in cooling mode.
NTT = Narrow Tube Temperature = Liquid line in cooling mode.
   = Solid
   = Blinking
   = Off

Unico i Series Specifications

General

Brand	Unico
Model	i Series
Category	Heat Pump
Language	English