Danfoss VZH052 Manual page 47

Troubleshooting
Check alarm #
(Continue)
#29
Drive over
temperature
Ambiant temp.
Too high or fan damaged
Electrical cabinet
Poor ventilation
Dirt on
CDS303 coil
Air by-pass
Or recycled
Missing
CDS303 back side
Metal sheet
Turn off power
Reset & start
Commercial Compressors
Check alarm #
(Continue)
#7
DC-OV
Check main power supply
voltage
Too high or
too low
Turn off power
Reset & start
Commercial Compressors
#65
Control card
Over temp.
direct wire
Check
connections
#8
DC-UV
Power
normal
Internal
components
damage
Contact your
Local Danfoss
#68
Safe stop
activated
Check 24V
On 12/13
terminals
24V supply to
terminal 37
Check external
controls
Reset & start
#36
Main Failure
Check power
supply voltage
Set 14-11 to
lower value
Reset & start
AB237586440343en-000601
March, 2014| 3
March, 2014| 4
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