-

 37 

-

(5)

Inspection procedures of indoor electrical equipment

NO

YES

YES

YES

NO

NO

Is fuse (3.15A) blown?

Indoor electrical equipment
are normal.

Is voltage applied between
terminals 

1

~

2

 on terminal

block? (AC 220/230/240V)

Is DC 0~12V detected between
terminals 

2

~

3

 on terminal

block?

Replace fuse.

Replace PCB.

Replace PCB.

Notes (1) Since the communication timing signal is transmitted only when the 52C is turned ON, check it under the operating condition.

(2) Check the voltage on the terminal block.

¡

Power supply: Between 

1

~

2

 (AC 220/230/240V)

¡

Signal: Between 

2

~

3

 (Changing between DC 0~Approx. 12V)

(6)

How to make sure of remote controller

(1)

Is remote

controller

normal?

YES

Again pushing
operating switch

Operating the unit?

NO

Does backup
switch operates?

Operating the unit.

NO

NO

YES

YES

Remote controller
defects

Abnormality is not
found.

Replace the display.

Control problem on
indoor unit

Is the unit

operable with remote

controller?

Defective remote
controller

NO

YES

Normal

Note (1) Check method of remote controller

(a) Press the reset switch of the remote controller.
(b) If all LCD are displayed after zero (0) display, it is basically normal.

LO

MED

HI

AUTO

HI POWER

ECONO

ON

OFF

AM

PM

Опубликовано TopClimat