Danfoss VZH Series Application Guidelines

Application guidelines
64 FRCC.PC.023.A7.22
Single compressorsTroubleshooting
Commercial Compressors
March, 2014| 1
VZH Compressor
not working
Power output
from CDS303
drive ?
CD warning
CD switches
to Alarm
Check alarm #
Torque limit
VZH blocked
Check oil level
VZH to be
replaced
Piping check
oil return
Reset & Start
Over current
Check VZH + CDS303
compatibility
Replace
relevant part
Check motor current
&Settings
Control Comp
Working load/map
Mains Shut off
& reset
yes no
#12 #13
Commercial Compressors
March, 2014| 2
#14
Earth Fault
Output side
Check motor
cable
Correct
the fault
Check VZH
Motor resistance
and isolation
Reset &
start
Check alarm #
(Continue)
#16
Short circuit
Output side
#30,31,32
Motor phase
missing
#38
Internal fault
Setting Error(s)
Incompatibility
Between
Software &
Additional option
Come back to
factory settings
Contact your
Local Danfoss
Mains shut-off
before
checking !

Danfoss VZH Series Specifications

General

Brand	Danfoss
Model	VZH Series
Category	Air Compressor
Language	English