Danfoss VZH Series - Page 66

Application guidelines
66 FRCC.PC.023.A7.22
Single compressorsTroubleshooting
Commercial Compressors
March, 2014| 5
Speed limit (low)
Automatic restart
after 30s
Wrong wiring of U/V/W
Start failed
Minimum speed
not reached
after 2 sec.
Compressor stopped,
similar reason as A49
Automatic restart
after 30s
10 restarts
before blockage
(20 possible)
#49
Check alarm #
(Continue)
#18
Compressor stopped
Compressor bearing wear
10 restarts
before blockage
(20 possible)
More information on CDS303 inverter trouble shooting checklist is described in document "FRCC.PC.036".