McQuay MWM Service Manual page 51

MCQUAY Service Guide Book
Chilled Water Fan Coil Unit
Model
MWM 05 – 25FW, 301W
MCK 20 – 50AW/MWH
MCK 15 – 25BW
MCK 10 – 20CW
MCM 20 – 50DW/CBW
MCC 10 – 60CW
MDB 75 – 150BW
Self Diagnostic Table – W1V3
Fault Indication
Room sensor missing
Indoor coil sensor missing
Pump fault
Pipe water temperature
poor
Pipe water temperature
fault
Model
MWM 07 – 25G2W
MWM 301W
MCK 20 – 50AW/MWH
MCK 15 – 25BW
MCK 10 – 20CW
MCM 07 – 15CBW
MCM 20 – 50DW
MCM 15 – 25EW
MCC 10 – 60CW
MDB 75 – 150BW
Self Diagnostic Table – W2
Fault Indication
Room sensor error (short/open)
Pipe water sensor error (short/open)
Water pump error
Pipe water temperature fault
Window open activated*
Antifreeze mode activated*
Load shedding activated*
*Applicable for 4 pipes applications only.
Board
W1V3 G7 / SLM3 / Netware 3 / SLM8
W1V3 G7 / SLM3 / Netware 3 / SLM8
W1V3 G7 / SLM3 / Netware 3 / SLM8
W1V3 G7 / SLM3 / Netware 3 / SLM8
W1V3 G7 / SLM3 / Netware 3 / SLM8
W1V3 SLM3 / Netware 3 / SLM8
N/A
POWER LED
Other LEDs
/ COOL LED
Blinks 4 times FAN blinks
Blinks 4 times SLEEP blinks
Blinks 2 times COOL & FAN
blink
Blinks 3 times COOL & DRY
blink
Blinks 1 time COOL blinks
Board
W2 G17 / SLM3 / Netware 3 / SLM8
W2 G17 / SLM3 / Netware 3 / SLM8
W2 G17 / SLM3 / Netware 3 / SLM8
W2 G17 / SLM3 / Netware 3 / SLM8
W2 G17 / SLM3 / Netware 3 / SLM8
W2 G17 / SLM3 / Netware 3 / SLM8
W2 G17 / SLM3 / Netware 3 / SLM8
W2 G17 / SLM3 / Netware 3 / SLM8
W2 SLM3 / Netware 3 / SLM8
N/A
COOL LED
Blink 1 time
Blink 2 times
Blink 6 times
Blink 5 times
Blink 3 times
Blink 7 times
Blink 8 times
Handset
No Controller
Error
Code
E1 Check room sensor
connection / change room
sensor
E2 Check indoor coil sensor
connection / change indoor
coil sensor
E6 Clear the clogging at drain
pipe. If pump is not working,
change the pump
E4
-
E5
-
Handset
No Controller
Error
Code
E1 Check room sensor
connection / change room air
sensor
E2 Check pipe water sensor
connection / change pipe
water sensor
E6 Clear the clogging at drain
pipe. If pump is not working,
change the pump
E5
-
-
-
50
Diagnosis
Action
Action
-
-
-