Troubleshooting guide

Chilled Water Fan Coil Unit

Model Board Handset

WM 05 – 25FW, 301W W1V3

CK 20 – 50AW/AWH W1V3

CK 15 – 25BW W1V3

CK 10 – 20CW W1V3

CE 20 – 50DW/CBW W1V3

CC 10 – 60CW W1V3 SLM3 / Netware 3

SB 75 – 150BW N/A No Controller

Self Diagnostic Table – W1V3

Fault Indication POWER LED / COOL LED Other LEDs Seven Segments

Room sensor missing Blinks 4 times FAN blinks E1 blinking

Indoor coil sensor missing Blinks 4 times SLEEP blinks E2 blinking

Pump fault Blinks 2 times COOL & FAN blink E6 blinking

Pipe water temperature poor Blinks 3 times COOL & DRY blink E4 blinking

Pipe water temperature fault Blink 1 time COOL blinks E5 blinking

Model Board Handset

WM 07 – 25GW W2

WM 301W W2

CK 20 – 50AW/AWH W2

CK 15 – 25BW W2

CK 10 – 20CW W2

CE 07 – 15CBW W2

CE 20 – 50DW W2

CE 15 – 25EW W2

CC 10 – 60CW W2 SLM3 / Netware 3

SB 75 – 150BW N/A No Controller

Self Diagnostic Table – W2

Fault Indication COOOL LED Seven Segments

Room sensor error (short/open) Blink 1 time E1

Pipe water sensor error (short/open) Blink 2 times E2

Water pump error Blink 6 times E6

Pipe water temperature fault Blink 5 times E5

Window open activated* Blink 3 times -

Antifreeze mode activated* Blink 7 times -

Load shedding activated* Blink 8 times -

*Applicable for 4 pipes applications only.

G7 / SLM3 / Netware 3

G11 / SLM3 / Netware 3

G7 / SLM3 / Netware 3

G11 / SLM3 / Netware 3