Service Diagnosis; Led Lights Diagnosis Table - McQuay MWM Service Manual

MCQUAY Service Guide Book

7.0 SERVICE DIAGNOSIS

7.1 LED Lights Diagnosis Table

Wall Mounted F Series Cooling Only
Model
MWM 10/15/20/25F, 311
MWM 07/10/15/20/25F
POWER SLEEP
(Green) (Red)
/
Continuously
Once every 2s
Twice every 2s
3 times every 2s
ON /
Board Handset
D2.0 G7
L2EF G7
TIMER DRY
(Orange) (Orange)
/
ON or OFF
Operation / Faulty
Indication
Timer On
Sleep mode On
Dry mode
Defrost mode
Room air sensor
contact loose / short
Indoor coil sensor
contact loose / short
Gas leak
BLINKING
42
Action
-
-
-
-
Check room sensor connection /
change room sensor
Check indoor coil sensor
connection / change indoor coil
sensor
Check for leakage & repair / Top
up refrigerant
Diagnosis