MCQUAY Service Guide Book
Diagnosis
50
Chilled Water Fan Coil Unit
Model Board Handset
MWM 05 – 25FW, 301W
W1V3
G7 / SLM3 / Netware 3 / SLM8
MCK 20 – 50AW/MWH
W1V3
G7 / SLM3 / Netware 3 / SLM8
MCK 15 – 25BW
W1V3
G7 / SLM3 / Netware 3 / SLM8
MCK 10 – 20CW
W1V3
G7 / SLM3 / Netware 3 / SLM8
MCM 20 – 50DW/CBW
W1V3
G7 / SLM3 / Netware 3 / SLM8
MCC 10 – 60CW
W1V3
SLM3 / Netware 3 / SLM8
MDB 75 – 150BW
N/A
No Controller
Self Diagnostic Table – W1V3
Fault Indication
POWER LED
/ COOL LED
Other LEDs
Error
Code
Action
Room sensor missing
Blinks 4 times
FAN blinks
E1
Check room sensor
connection / change room
sensor
Indoor coil sensor missing Blinks 4 times SLEEP blinks
E2
Check indoor coil sensor
connection / change indoor
coil sensor
Pump fault
Blinks 2 times COOL & FAN
blink
E6
Clear the clogging at drain
pipe. If pump is not working,
change the pump
Pipe water temperature
poor
Blinks 3 times COOL & DRY
blink
E4
-
Pipe water temperature
fault
Blinks 1 time
COOL blinks
E5
-
Model Board Handset
MWM 07 – 25G2W
W2
G17 / SLM3 / Netware 3 / SLM8
MWM 301W
W2
G17 / SLM3 / Netware 3 / SLM8
MCK 20 – 50AW/MWH
W2
G17 / SLM3 / Netware 3 / SLM8
MCK 15 – 25BW
W2
G17 / SLM3 / Netware 3 / SLM8
MCK 10 – 20CW
W2
G17 / SLM3 / Netware 3 / SLM8
MCM 07 – 15CBW
W2
G17 / SLM3 / Netware 3 / SLM8
MCM 20 – 50DW
W2
G17 / SLM3 / Netware 3 / SLM8
MCM 15 – 25EW
W2
G17 / SLM3 / Netware 3 / SLM8
MCC 10 – 60CW
W2
SLM3 / Netware 3 / SLM8
MDB 75 – 150BW
N/A
No Controller
Self Diagnostic Table – W2
Fault Indication
COOL LED
Error
Code
Action
Room sensor error (short/open)
Blink 1 time
E1
Check room sensor
connection / change room air
sensor
Pipe water sensor error (short/open)
Blink 2 times
E2
Check pipe water sensor
connection / change pipe
water sensor
Water pump error
Blink 6 times
E6
Clear the clogging at drain
pipe. If pump is not working,
change the pump
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.
Содержание 5MDS
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