McQuay MWM Service Manual Book page 38

Wall Mounted F Series Heat Pump Model
Model
WM 10/15/20/25FR, 301R
LED Indicator Light Display
COOL
(Green)
HEAT / FAN
/
(Red / Green)
LED Light Diagnosis Table
ON
Board Handset
U1.5 G7
/
/
/
/
/ ON or OFF
DRY
(Orange)
SLEEP
(Red)
Operation / Faulty Indication
Cooling mode
Dry mode
Fan mode
Heating mode
Auto mode in heating operation
Auto mode in cooling operation
Defrost mode
Compressor overload protection
Indoor coil sensor contact loose
/ short
Outdoor coil sensor contact
loose / short
Room air sensor contact loose /
short
Gas leak
BLINKING
37