Airwell PNXA 12 DCI, Руководство по обслуживанию

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TROUBLESHOOTING
13-6
SM PNXADCI 1-A.1 GB
27 Bad Communication
1 1 0 1 1
28
Missing ODU configuration
1 1 1 0 0
29 Undefined ODU Model
1 1 1 0 1
30 Outdoor/Indoor Coil Overheating
1 1 1 1 0
31 Operation conditions are exceeded
1 1 1 1 1
13.1.3.4 Outdoor unit diagnosis and corrective actions
No.
Fault
Probable Cause Corrective Action
Sensors failures of all
types Check sensors
connections or replace
sensors.
IPM Fault Electronics HW
problem Check all wiring and
jumper settings, if OK,
replace electronics.
Bad EEPROM No action, unless special
parameters are required
for unit operation.
DC under/over Voltage Electronics HW
problem Check outdoor unit power
supply voltage
AC under Voltage Check outdoor unit power
supply voltage
Indoor / Outdoor unit
Communication mismatch Indoor and Outdoor
controllers are with
different versions Replace Indoor controller
No Communication Communication or
grounding wiring is not
good. Check Indoor to Outdoor
wiring and grounding
Compressor Lock Switch unit to STBY and
restart
Bad Communication Communication quality is
low reliability Check Indoor to Outdoor
wiring and grounding
13.1.4 Judgement by MegaTool
MegaTool is a special tool to monitor the system states.
Using MegaTool requires:
•
A computer with RS232C port.
•
A connection wire for MegaTool.
•
A special MegaTool software.
Use MegaTool according to following procedure:
•
Setup MegaTool software: copy the software to the computer.
•
Connect RS232C port in computer with MegaTool port in Indoor/Outdoor unit
controller by the connection wire.
•
Run the software and choose the COM port, you can monitor the A/C system state in
monitor tab.
13.2 Simple procedures for checking the Main Parts