Daikin GYEQ20AN, Руководство по обслуживанию

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SiAUY361411EA Inspecting the Outdoor Unit
Parts Inspection 192
1.26 Inspecting the Outdoor Fan Motor
Caution When you inspect the outdoor fan motor with the outdoor unit powered ON, take extreme care
not to directly touch the circuit board (except the switches) or you may get an electrical shock.
Even with the power OFF, there is a risk of an electric shock when any circuit board has an LED
still lit. Before accessing any circuit board, make sure that there is no circuit board whose
LED(s) are still lit.
„
Output voltage
∗
Reference value
1. Using a tester, check if the output voltage requirements specified above are met.
2. If the voltage is significantly different than specified above, stop the system using the
onboard checker and wait for 5 minutes; then, with the power shut OFF, check the harness
for continuity and the junction connectors for contact failure using a tester.
3. If the harness and connectors are OK, then check each component.
„
Inspecting the fan motor
Inspect the fan motor by measuring the resistance between its terminals.
∗
At 20°C (reference value)
Parts to inspect Measuring points During system stop With actuator check ON
Power supply
circuit board
Between CN104-1 and -3 280 V DC
∗
280 V DC
∗
DCBL circuit
board
Between CN201-1 and -3 280 V DC
∗
280 V DC
∗
CN203
CN204
CN205
Between phases
0 V
∗
Speed (min
-1
) Voltage
700 180±5 V AC
∗
600 180±5 V AC
∗
500 180±5 V AC
∗
Measuring points Measured value (
Ω
)
∗
Power
supply
Between terminals #1(red) and #2 (white) 7.3±10%
Between terminals #1(red) and #3 (black) 7.3±10%
Between terminals #2(white) and #3 (black) 7.3±10%
Measuring points Measured value (k
Ω
)
∗
Signal
Between #1 (pink) and #2 (gray) 100±10%
Between #1 (pink) and #3 (yellow) 10±10%
Between #1 (pink) and #4 (blue) 10±10%
Between #1 (pink) and #5 (amber) 10±10%
Between #2 (gray) and #3 (yellow) 100±10%
Between #2 (gray) and #4 (blue) 100±10%
Between #2 (gray) and #5 (amber) 100±10%
Between #3 (yellow) and #4 (blue) 20±10%
Between #3 (yellow) and #5 (amber) 20±10%
Between #4 (blue) and #5 (amber) 20±10%