Daikin FTXS09HVJU, Руководство по обслуживанию

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SiUS04-904 Troubleshooting
142 Service Diagnosis
4.22 Over-voltage Detection
Remote
Controller
Display
U2
Method of
Malfunction
Detection An abnormal voltage rise is detected by checking the specified over-voltage detection circuit.
Malfunction
Decision
Conditions

An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer (The
voltage is over 400V).

The system is shut down if the error occurs 255 times.

Clearing condition: Continuous run for about 10 minutes (normal)
Supposed
Causes

Supply voltage not as specified

Over-voltage detection circuit defective

PAM control part(s) defective
Troubleshooting
Note: If the model does not have SPM, replace the outdoor unit PCB.
Correct the po w er s u pply.
Replace the SPM.
Check for s u ch factors for
an extended period of time.
(R02 8 4)
Caution
Be s u re to t u rn off po w er s w itch b efore connect or disconnect connector,
or parts damage may b e occ u rred.
N O
YES
YES
N O
YES
N O
Replace fan motor and
o
u tdoor u nit PCB.
(Replace the o u tdoor u nit
PCB.)
Check the s u pply v oltage.
Rotate fan b y hand.
Dist u r b ance factors
*
N oise
*
Po w er s u pply distortion
Repeat a
T u rn on the
po w er again. System
restarted?
Does fan rotate
smoothly?
S u pply v oltage
as specified?