Unico Master And Wall Split Communication Line; Routine Maintenance - Olimpia splendid UNICO TWIN Instrucciones Para La Instalación, Uso Y Mantenimiento

DESCRIPTION
Internal exchanger overtemperature (HTI)
UNICO unit external exchanger overtemperature (HTE)
UNICO unit outdoor temp. probe fault (short circuit) (TFS7)
UNICO unit outdoor temperature probe fault (open circuit) (TFS8)
Internal fan malfunction (SV)
Ambient temperature probe fault (short circuit) (TFS1)
Ambient temperature probe fault (open circuit) (TFS2)
Internal exchanger temp. probe fault (short circuit) (TFS3)
Internal exchanger temp. probe fault (open circuit) (TFS4)
UNICO unit external exchanger temperature probe fault
(short circuit) (TFS5)
UNICO unit external exchanger temperature probe fault (open
circuit) (TFS6)
:
2.3

UNICO MASTER AND WALL SPLIT COMMUNICATION LINE

UNICO MASTER
N.B.: the G contact only ever refers to the cable shielding.
WALL SPLIT
- Remove the cover to access the terminal board (Fig. 41 ref.B)
- Run the cable through the hole in the back of the unit.
2.3.1 Communication between the two units
- 2-pole plus shield
- maximum length 15 metres
- minimum cable section 0.35 mm
2.4

ROUTINE MAINTENANCE

2
.
LED D LED C LED B
GREEN YELLOW GREEN
OFF OFF
ON
OFF OFF
ON
OFF
ON
OFF OFF
OFF
ON
OFF
ON ON
OFF
ON ON
OFF
ON
OFF
ON ON
OFF
ON ON
ON ON
ON ON
ON ON ON
ON ON ON
OFF
ON
LED A
RED
OFF
ON
OFF OFF
OFF
ON
OFF
ON
OFF
ON
OFF OFF
OFF
ON
OFF OFF
OFF
ON
OFF
ON
OFF
ON
49
UNICO TWIN
2