Mitsubishi Electric MXZ-3E54VA-E1 Service Manual page 2

Use the specif ed refrigerant only
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by
failure to follow the instructions.
<Preparation before the repair service>
Prepare the proper tools.
Prepare the proper protectors.
Provide adequate ventilation.
After stopping the operation of the air conditioner, turn off the power-supply breaker and remove the power plug.
Discharge the capacitor before the work involving the electric parts.
<Precautions during the repair service>
Do not perform the work involving the electric parts with wet hands.
Do not pour water into the electric parts.
Do not touch the refrigerant.
Do not touch the hot or cold areas in the refrigeration cycle.
When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to
touch the live parts.
Revision A:
• MXZ-2E53VAHZ- and MXZ-4E83VAHZ-
E1
• Values of air flow and fan speed for MXZ-5E102VA-
Revision B:
• MXZ-3E54VA- ,
E1 ET1
Revision C:
• MXZ-3E54VA- , MXZ-3E68VA-
ER1
MXZ-2E53VAHZ- and MXZ-4E83VAHZ-
ER1
Revision D:
• MXZ-4E83VA- ,
E3 ET3
OBH723D
have been added.
E1
, MXZ-3E68VA- ,
E1 ET1
, MXZ-4E72VA-
ER1
have been added.
ER1
, , MXZ-5E102VA-
ER2 E3
, have been modified.
E1 ET1
, and MXZ-4E72VA- ,
E1
, MXZ-4E83VA-
ER1
, , and MXZ-4E83VAHZ-
ET3 ER2
2
have been added.
ET1
, , , MXZ-5E102VA-
E2 ET2 ER1
, have been added.
E2 ER2
, , ,
E2 ET2 ER1