MCQUAY Service Guide Book
Diagnosis
44
Wall Mounted G Series
Model Board Handset
MWM 10/15/20/25G/GR L2.2
G17 / SLM3 / Netware 3 / SLM8
SLEEP
(Red)
POWER
(Green/Red)
TIMER
(Orange)
IONIZER
(Green)
Error
Code
(SLM3 /
Netware 3)
Operation / Faulty
Indication
Action
- Cooling
mode
-
- Heating
mode
-
-
Auto mode in
heating operation
-
-
Auto mode in
cooling operation
-
- Timer
On
-
-
Sleep mode On
-
- Ionizer
On
-
-
Fan mode On
-
-
Dry mode On
-
E1
Room air sensor
contact loose /
short
Check room sensor
connection / change room
sensor
E2
Indoor coil sensor
contact open
Check indoor coil sensor
connection / change indoor
coil sensor
E3
Outdoor coil sensor
contact open
Check outdoor coil sensor
connection / change
outdoor coil sensor
E4
Compressor
overload protection
/ Indoor / Outdoor
coil sensor short
If running ampere highly
increase, change the
compressor. If not, replace
the coil sensor
- Defrost
mode
-
E5 Gas
leak
Check for leakage & repair
/ Top up refrigerant
E8
Hardware error
(tact switch pin
short)
Check for the tact switch
pin condition
/
ON
ON or OFF
BLINKING
/
/
/
/
/
/
/
/
/
/
Green
Red
Red
Green
1 time
3 times
1 time
Red
3 times
6 times
2 times
Содержание 5MDS
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