4. Service procedures

(4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y

If something goes wrong with the outdoor unit, LED lamps on the outdoor P.C.B. Ass’y light up to show the cause of the trouble, in addition to the Alarm message on the remote controller.

Section

1

2

3

 

LED 2 on

 

 

LED 1 on

Remote

Possible cause of trouble

 

P.C. board

P.C. board

controller

 

 

 

 

 

 

 

 

No message

Normal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E06, E07, L04

Outdoor unit serial communication signal is abnormal.

 

 

 

 

 

 

 

 

 

Outdoor unit address is duplicated.

 

 

 

 

*

No message

Other outdoor units are performing auto address and

 

 

 

 

detecting refrigerant shortage.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P02

FMo • CM thermal protection is in operation.

 

 

 

 

 

 

Power supply voltage is abnormal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P04, P05

High voltage SW activates

 

 

 

 

 

 

Negative phase protector activates.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*

F04~F09

Sensor is abnormal. (Open or short)

 

 

 

 

 

 

 

 

 

 

 

*

 

 

 

 

 

H01, H02

Abnormal compressor current value is detected.

 

 

 

 

 

 

 

 

 

 

 

*

 

 

 

*

E15, E16

Auto address failure

 

Flash at th

 

e

same time

 

 

 

 

 

 

 

 

 

 

 

 

 

*

 

 

 

*

“SETTING”

Auto address is in operation.

 

Flash al

te

rnately

flashes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE

: LED lamps OFF : LED lamps ON (lights up) *: LED lamps ON (flashes)

4

LED 2 (D12)

LED 1 (D11)

1125_C_I

Fig. 20

CAUTION

*REFRIGERANT SHORTAGE

Note particularly that a shortage of refrigerant is only shown by the outdoor P.C.B. Ass’y LEDs and the Alarm Message does not appear on the Indoor Remote Controller . The compressor keeps running even when the refrigerant is less, so when you find the LED indication on the outdoor P.C.B. Ass’y, stop the air conditioner immediately to avoid the compressor damage.

SM830076

– 60 –

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Sanyo XHS3632, XHS2432, CH2432, CH3632 service manual Refrigerant Shortage

XHS3632, XHS2432, CH3632, CH2432 specifications

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