2
<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.
Use the specifi 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.
Revision A:
• MXZ-2E53VAHZ-
E1
and MXZ-4E83VAHZ-
E1
have been added.
• Values of air flow and fan speed for MXZ-5E102VA-
E1
,
ET1
have been modified.
Revision B:
• MXZ-3E54VA-
E1
,
ET1
, MXZ-3E68VA-
E1
,
ET1
, and MXZ-4E72VA-
E1
,
ET1
have been added.
Revision C:
• MXZ-3E54VA-
ER1
, MXZ-3E68VA-
ER1
, MXZ-4E72VA-
ER1
, MXZ-4E83VA-
E2
,
ET2
,
ER1
, MXZ-5E102VA-
E2
,
ET2
,
ER1
,
MXZ-2E53VAHZ-
ER1
and MXZ-4E83VAHZ-
ER1
have been added.
Revision D:
• MXZ-4E83VA-
E3
,
ET3
,
ER2
, MXZ-5E102VA-
E3
,
ET3
,
ER2
and MXZ-4E83VAHZ-
E2
,
ER2
have been added.
Revision E:
• "8-2. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY (single operation)" for MXZ-3E54VA,
MXZ-3E68VA and MXZ-4E72VA have been modified.
Revision F:
• MXZ-3E54VA-
E2
,
ET2
, MXZ-3E68VA-
E2
,
ET2
, MXZ-4E72VA-
E2
,
ET2
, MXZ-4E83VA-
E4
,
ET4
, MXZ-5E102VA-
E4
,
ET4
, MXZ-2E53VAHZ-
E2
, and MXZ-4E83VAHZ-
E3
have been added.
Revision G:
• MXZ-3E54VA-
ER2
, MXZ-3E68VA-
ER2
, MXZ-4E72VA-
ER2
, MXZ-4E83VA-
ER3
, MXZ-5E102VA-
ER3
, MXZ-2E53VAHZ-
ER2
and MXZ-4E83VAHZ-
ER3
have been added.
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