Troubleshooting; Check Before And After Troubleshooting; Air Conditioner Does Not Operate - Argo Clima Euro-Line AD52AL Technical Data & Service Manual

5.

6. TROUBLESHOOTING

5-1.

6-1. Check before and after troubleshooting

WARNING
Hazardous voltage can cause ELECTRIC SHOCK or
DEATH. Disconnect power or turn off circuit breaker
before you start checking or servicing.
5-1-1.
6-1-1. Check power supply wiring.
● Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the indoor
unit.
5-1-2.
6-1-2. Check inter-unit wiring.
● Check that inter-unit wiring is correctly connected to the outdoor unit from the indoor unit.
5-1-3.
6-1-3. Check power supply.
● Check that voltage is in specified range (±10% of the rating).
● Check that power is being supplied.
5-1-4.
6-1-4. Check lead wires and connectors in indoor and outdoor units.
● Check that coating of lead wires is not damaged.
● Check that lead wires and connectors are firmly connected.
● Check that wiring is correct.

5-2. Air conditioner does not operate.

5-2-1. Circuit breaker trips (or fuse blows).
A. When the circuit breaker is set to ON, it trips immediately. (Resetting is not possible.)
● There is a possibility of ground fault.
● Check insulation resistance.
If resistance value is 2MΩ or less, insulation is defective ("NO").
WARNING
*
Set circuit breaker to OFF.
Remove inter-unit wires from
1
terminal plate in outdoor unit.
Measure insulation resistance
•
of outdoor unit.
Remove inter-unit wires from
2
terminal plate in indoor unit.
Then, pull the power plug out of
the wall outlet
• Measure insulation resistance
of indoor unit.
Insulation of
NO
outdoor unit
is defective.
Measure insulation
•
resistance of electrical
parts in outdoor unit.
Insulation of
NO
indoor unit
is defective.
23
Measure insulation
•
resistance of electrical
parts in indoor unit.