Gree GVH24AK-K3DNC6A, Руководство по обслуживанию

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40
Installation and Maintenance
Service Manual
3.1:IPM 保护、失步故障、压缩机相电流过流（外机故障）
主要检测点：
●控制板 AP1 与压缩机 COMP 是否可靠连接？是否有松脱？连接顺序是否正确？
●机组电压输入是否在正常范围内（用交流电压表测量接线板 XT 的 L、N 之间的电压）？
●压缩机线圈电阻是否正常？压缩机线圈对铜管的绝缘是否完好？
●机组工作负荷是否过重 ? 机组散热是否良好？
●冷媒灌注量是否合适？
23
Compressor is
desynchronizing
□
☆
■
☆
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
Refer to malfunction analysis (IPM protection,
desynchronizing of compressor, overcurrent
protection of phase-current of compressor).
24
Overcurrent
protection of
phase current for
compressor
□
☆
□ □
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
Refer to malfunction analysis (IPM protection,
desynchronizing of compressor, overcurrent
protection of phase-current of compressor).
25
Malfunction of
phase current
detection circuit for
compressor
□
☆
■ □
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
Replace control board of outdoor unit.
26 Startup failure □
☆
□
☆
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
Refer to malfunction analysis.
27 PFC protection □ ■
☆ ☆
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
Refer to malfunction analysis.
28
EEPROM
malfunction
□ □ ■ ■
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
Replace control board of outdoor unit.
29
Charging
malfunction of
capacitor
□ ■ □ ■
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
Refer to malfunction analysis for charging of
capacitor.
30
Malfunction of
voltage dropping for
DC bus-bar
□ ■ ■ ■
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
The supply voltage is not stable.
31
Voltage of DC bus-
bar is too low
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
1. Measure the voltage between L and N on wiring
board (XT), if the voltage is lower than 150 VAC,
turn on the unit after the supply voltage is increased
to the normal range.
2.If the AC input is normal, measure the voltage
of electrolytic capacitor on control board after
energizing the unit (TEST3 in the fig.), if it’s the DC
voltage is more than 180V, there’s malfunction in
the circuit, please replace the control panel; if the
voltage is less than 180V, please check wiring of
the unit.
32
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, all
loads stop operation.
1. Measure the voltage between L and N on wiring
board, if the voltage is over 265 VAC, turn on the
unit after the supply voltage is increased to the
normal range.
2.If the AC input is normal, measure the voltage
of electrolytic capacitor C on control board after
energizing the unit, if the voltage is less than 400V,
it means the circuit for measuring DC voltage is
faulted, please replace the control board.