12. SERVICE PROCEDURES

(1) Troubleshooting

1) Check before and after Troubleshooting

Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first.

1 Check power supply wiring

(a) Single-phase

Check that power supply wires are correctly connected to L1 and L2 on the 6P terminal in the outdoor unit.

2 Check inter-unit wiring

Check that inter-unit wiring (AC 230 - 208 V Line voltage) is correctly con- nected between the indoor unit and outdoor unit.

Single-phase outdoor unit

Indoor Unit

Outdoor Unit

4P Terminal

1

2

G

4

 

Inter-Unit Wiring

6P Terminal

 

(Line voltage)

 

 

 

230V/208V

1

 

 

 

230V/208V

2

 

 

 

Grounding line

G

 

 

 

230V/208V

4 (A)

 

 

Disconnect

(B)

L1

 

 

switch

 

L2

(Field supply)

G

 

 

Power supply Single phase 230V/208V 60Hz

Grounding line

2206_M_S

Fig. 15

3 Check power supply

Check that voltage is within the specified range (±10 % of the rating). Check that power is being supplied.

If the following troubleshooting must be done with power being supplied, be careful not to touch any uninsulated live part that can cause ELECTRIC SHOCK.

4 Check the lead wires and connectors in indoor and outdoor units.

Check that the sheath of lead wires is not damaged.

Check that the lead wires are firmly connected at the terminal plate. Check that the wiring is correct.

5Reference

Condition of general cooling operation (Thermo. ON) SWEEP .................. ON

Indoor fan speed .... HIGH

SM830092

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Sanyo CL2462R, C2462R service manual Service Procedures

C2462R, CL2462R specifications

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