Condition Fault Remedy
Condensate trap remains
inoperative
Automatic drain system clogged Flush the assembly by opening
the manual drain valve. Have
system inspected
Clean the inlet filter of the
automatic drain
Condition Fault Remedy
Condensate trap continuously
discharges air and water
Automatic drain system out of order Have system checked, if
necessary replace automatic
drain
Condition Fault Remedy
Evaporator pressure is too high or
too low at unload
Hot gas bypass valve incorrectly set
or out of order
Have hot gas bypass valve
adjusted
Shortage of refrigerant Have circuit checked for leaks
and recharged
Drain alarm visible (red light and blinking drain icon)
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
Condition Fault Remedy
Phase sequence relay shut down (3-
phase units)
Voltage supply connected wrong Reverse two incoming electric
lines.
Also correct the rotation direction
of the fan motor; if necessary
change wiring K12:1, K12:3
Condition Fault Remedy
High pressure switch has shut down
the dryer
Condenser pressure too high Push the small button of the high
pressure switch
Clean condenser
Improve ventilation of the cooling
air
Instruction book
54 2920 7103 90
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