Airwell YBZE218-324-430, Руководство по обслуживанию

Страница: 53 / 68

TROUBLESHOOTING
Service Manual
– YBZE DCI 1-A.1 GB
13-3
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchange.
6. Over charged system.
PFC protection HC 6 1. PFC module assembly problem.
2. Poor heat exchange of Heatsink
3. PFC reactor problem.
4. Abnormal power voltage
5. PFC circuit problem on PCB
Desynchronizing of compressor H7 7 1. Abnormal power input voltage.
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchange.
6. Over charged system.
。
Compressor start-up failure Lc 11 1. Compressor wiring mistake
2. Over charged system
3. System not balanced before compressor
starting
4. Compressor problem
Compressor phase current
detection problem
U1 12 Phase current detection circuit for
compressor has problem.
DC over current P5 15 1. Abnormal power input voltage.
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchange.
6. Over charged system.
Charging malfunction of
capacitor
PU 17 1. Reactor open
2. Charging relay or other components
damaged on PCB.
HST failure P7 18 1. Senor was broken or damaged
2. PCB temperature detection circuit has
problem
HST over heating protection P8 19
1. Insufficient attachment of IPM module to
Heatsink
2. Outdoor PCB problem.
DC under voltage PL 21 1. AC input voltage is too low
2. Reactor has problem
3. ODU PCB has problem
Lack Phase Protection of
Compressor
Ld 1. Compressor wiring problem
2. Compressor problem
3. IPM module problem or compressor
current detection circuit has problem
4. Compressor malfunction due to EEV
problem
Demagnetic protection of
compressor
HE DC compressor has problem
Malfunction of voltage dropping
for DC BUS U3 20 Supply voltage is unstable
Outdoor EEPROM Malfunction EE Outdoor PCB problem
Installation test failed dn 1. Check the communication wires
2. Check the EEV
AC Current detection problem U5 13 Outdoor main board damaged
Outdoor DC fan motor
malfunction
L3 23 1.DC fan motor malfunction or blocked
2.Bad connection
Under installation test dd normal status
Refrigerant Recovery Fo normal status
Dry mode AL normal status
Outdoor Deicing or Oil Return H1 normal status
The RV is abnormal U7 20 1.Supply voltage is lower than AC175V;
2.Wiring terminal RV is loosened or broken;
3.RV is damaged.
Downloaded from www.Manualslib.com manuals search engine