Mitsubishi SRK25ZD-S User Manual

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48
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(10) Inspection procedures of indoor electrical equipment
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)
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.
(9) How to make sure of remote controller
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
(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
main unit
Is the unit
operable with remote
controller?
Defective remote
controller
NO
YES
Normal

Mitsubishi SRK25ZD-S Specifications

General

Brand	Mitsubishi
Model	SRK25ZD-S
Category	Air Conditioner
Language	English