NANO VDR 2600, Instruction Book, Page: 86 / 96

Condition Fault Remedy
Motor overload
protection of refrigerant
compressor motor has
tripped
Have motor checked
For resetting: see the section
Electrical system
High-pressure switch
tripped
See above
Condensate drain remains
inoperative Automatic drain system
clogged
Flush the assembly by opening
manual drain valve.
Have system inspected
Condensate trap
continuously discharges air
and water
Automatic drain system
out of order Have system checked. If necessary
replace automatic drain
Evaporator pressure is too
high or too low at unload Condenser pressure too
high or too low
See above
Shortage of refrigerant
Have circuit checked for leaks and
recharged
Incorrect working of
electronic hot gas by-
pass valve (steering)
Check electrical connection of
valve or contact Nano
Faults and remedies (controller)
Condition Fault Remedy
Drain alarm No pressure in the air net
Error disappears when the
pressure in the air net is
restored
Drain was not able to drain all
the water
Push drain button manually.
When this occurs frequently
the drain should be replaced
No voltage supply to the drain
Check and correct supply to
the drain
High pressure switch has shut
down the dryer
Condensing pressure too high
Push the small button of the
high pressure switch
Clean condenser
Improve ventilation of the
cooling air
Dryer does not start Circuit has not cooled down
Wait 1 minute before
restarting the dryer
Too high flow or inlet
temperature too high
Dryer sizing too small Try running in regular mode
Refrigerant compressor inlet or
Superheat refrigerant
temperature too high
Too high load Reduce air flow
Shortage of refrigerant
Have circuit checked for
leaks and recharged
Incorrect working of electronic
expansion valve (steering) Check electrical connection
of valve or contact Nano
Instruction book
84 2987 2020 00