McQuay MWM - Diagnosis: Wall Mounted F Cooling Only Inverter-X

MCQUAY Service Guide Book Diagnosis
53
Wall Mounted F Cooling Only Inverter-X Model
Model Board Handset
MWMX 10/15F VA2.0 G17 / SLM3
TIMER
(Orange)
SLEEP
(Red)
POWER
(Green)
DRY
(Orange)
Error
Code
(SLM3)
Operation / Faulty
Indication
Action
Timer On -
Sleep mode On -
Dry mode -
E1
Indoor temperature
sensors contact
loose / short
Check indoor coil sensor
connection / change indoor
coil sensor
E2
Outdoor temperature
sensor contact loose
/ short
Check outdoor coil sensor
connection / change outdoor
coil sensor
E3
Communication
error between indoor
and outdoor
Check the connection wires
between indoor and outdoor
E4
Compressor
overload protection
If running ampere highly
increase, change the
compressor
E6
Gas leak /
compressor
overheat
Check for leakage & repair /
Top up refrigerant
E7
Inverter error / PFC
error
Check supply voltage and
compressor phase
E8
Outdoor total current
trip / DC peak
Check the input current and
discharge pressure
E9
Indoor fan feedback
error
Check indoor fan motor / fan
motor wiring
/
ON ON or OFF BLINKING
/