Toshiba RAV-SM560AT-E Service Manual page 76

Toshiban lämmitys- ja jäähdytyslaitteiden jälleenmyyjä pääkaupunkiseudulla on Jäähdytinpalvelu RefGroup Oy
[P12 error]/[11 error]
<Only for 4-way air discharge cassette type models (RAV-SM560UT-E/RAV-SM800UT-E)>
Turn off the power.
Are not there connections errors or
disconnection on connectors CN333 and CN334
of indoor unit P.C. board (MCC-1402)?
Remove connectors CN333 and
CN334 of indoor unit P.C. board
(MCC-1402).
Does the fan rotate without trouble
when handling the fan with hands?
Are resistance values between phases
at fan motor connector CN333 motor side of
indoor P.C. board (MCC-1402) correct? *1
Is resistance value of fan motor connector
CN333 at motor side of indoor P.C. board
(MCC-1402) correct? *2
Is signal output of indoor fan motor
position detection correct? *3
Check indoor P.C. board
(MCC-1402).
Defect Replace
NO
YES
YES
*
• Are not coil windings between
• Is not earthed between cabinet and 1, 3, 5
*
YES
Check resistance of fan motor position detection circuit.
Is not coil winding between
opened or shorted?
YES
*
Check fan motor position detection signal.
• Using a tester, measure the voltage between CN334
• Between
www.ilmalämpöpumput.com
YES
NO
NO
1
between (White lead) and
3
(Black lead) and (Red lead) opened or shorted?
5 1
For resistance, see the following values.
AIU-P401H/HR, P451, P501, P561, P631, P711, P801
Approx. 70 to 100
AIU-P1121H/HR, P1401, P1601
NO
2
Resistance: Approx. 5 to 20k
NO
3
indoor P.C. board (MCC-1402) under condition that CN333 and
CN334 are mounted and the power is turned on.
Rotate the fan slowly with hands,
and check the pin voltage
swings between 0 to 5V voltage.
and : 5V
4 5
– 76 –
Correct connection of connector.
Replace indoor fan motor.
Replace indoor fan motor.
(Red lead) and (White lead),
1 3
(Black lead), between
5
Approx. 35 to 50
10M or more
Replace indoor fan motor.
(Yellow lead) and (Pink lead)
1 4
Replace indoor fan motor.
CN333
and of
1 5
CN334