Sanyo MDF-U500VX - Page 38

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(5) Flowchart of “Fan motor lock” detection
Fan motor A turns on
Fan motor B turns on
Fan motor B turns on
Diagnosed value is stored
Value in current
trans. A is lower
than 20
Fan motor A malfunctions
Value in current
trans.B is lower
than 20
Current diagnosed
value is overthan
criterion +15%
Current diagnosed
value is under than
criterion-15%
Fan motor B malfunctions
1 hour elapses
1 hour elapses
Fan motor A
temporary turns off
Fan motor B
temporary turns off
Fan motor A turns on
Fan motor B turns on
Value in fan motor A
deviates from ±15%
of criterion
Value in fan motor B
deviates from ±15%
of criterion
Diagnosed value
= value in current trans. A/ value in current trans. B
Temp. in compressor
A is higher than +55
㷄
Tem p. i n c ompres sor
B is higher than +55
㷄
Both fan motor A and B
turn on
Power turns on
Value in Current trans
A is lower than 20
value in Current trans
B is lower than 20
Calculate current diagnosed
va lu e
Diagnosed value
= value in current trans. A/ value in current trans. B
In case both condensing fan motor A
and B turn on;