DAMA-SM-21-001 Troubleshooting
Service Diagnosis 84
Troubleshooting
Check No.17 Refer to P.91
Check No.18 Refer to P.91
Check No.22 Refer to P.94
Error again?
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
Normal?
Check the power supply voltage.
Voltage as rated?
Stop valve fully open?
Check No. 17
Check the installation condition.
Check No. 22
Check the power module.
Turn off the power. Then, turn on
the power to restart the system.
See if the same error occurs.
Short circuit of
wire breakage between
compressor’s coil
phases?
Monitor the power supply
voltage, discharge and suction
pressures, and other factors
for a long term.
Possible causes
* Momentary drop of power
supply voltage
* Compressor overload
* Short circuit
Fully open the stop valve.
Replace the compressor.
Correct the power supply.
Check the discharge pressure.
Go to Check No. 18
Replace the outdoor unit
PCB (main PCB).
Check the connectors and
other components.
Not a malfunction.
Keep observing.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
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