MAXA BDS28A Especificaciones descargar pdf (Pagina 26)

8.4.2.2. Capacitor charging malfunction (Fault with outdoor unit) (AP1 below refers to the outdoor control panel)

Main detection point:

• Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC ~ 240VAC.

• If the reactor (L) is correctly connected? If the connection is loose or fallen? If the reactor (L) is damaged?

Fault diagnosis proess:

8.4.2.3 IPM Protection, desynchronizing malfunction, Compressor Phase Overcurrent (AP1 below refers to the

outdoor control panel)

Main detection point:

• If the connection between control panel AP1 and compressor COMP is secure? If loose? If the connections are correct?

• If the voltage input of the machine is within normal range? (use AC voltmeter to measure the voltage between terminal L

and N on the wiring board XT)

• If the compressor coil resistance is normal? If the insulation of compressor coil’s against the copper tube is in good

condition?

Switch on the unit and wait

1 minute.

Use DC voltmeter to

measure the voltage on the

two ends of electrolytic

capacitor.

Voltage higher than 200V Faulty with the voltage testing

circuit on control panel AP1

Replace the control

panel AP1

Measure the AC voltage

between terminal L and N on

wiring board XT(power supply)

Voltage within 210 ~ 250VAC.

Switch off the power and repair

the supply power to restore the

voltage to 210VAC ~ 250 VAC

Re-energize and

switch on the unit

If the fault is

elmininated?

Switch off the power and

wait 20 minutes; or use DC

voltmeter to measure the

voltage on the two ends of

capacitor (test3), until the

voltage is lower than 20V.

Check the connection of

reactor (L in the Electrical

Wiring Diagram)

If the wiring of reactor L is

normal?

Connect the reactor L according

to Electrical Wiring Diagram

Re-energize and

switch on the unit

If the fault is

eliminated

Replace the control panel AP1

End

Yes

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