Error “Lt” is shown on
controller
*controller
* sensor
● Lt error occurs when dew point temperature value drops below -2°C
● Bypass valve is not set properly – unscrew the protection cap and
tighten the nub in a counter clockwise fashion for 1 full turn (360°),
wait if dew point values are raising, if not repeat process
● May occur if the ambient temperature is to low
Error “Cln” is shown on
controller
*controller
* sensor
● Cln error occurs when the temperature on the condenser surpasses
70°C
● May occur if the ambient temperature is too high
● May occur if condenser coil is dirty – please clean the condenser coil.
● May occur if the fan is not working (there is no ambient airflow
through the dryer) - please check the electrical wiring of the fan.
● May occur if there is a bad connection of temperature sensor Ntc.
Cond. to the controller – check if the connection of condenser
temperature sensor is good.
Error ”Ht” is shown on
controller
*controller
*sensor
● Ht error occurs when the temperature of compressor surpasses
110°C
● Check the copper tubing for any leakage – there may very well be a
leakage and the temperature goes above 110°C due to insufficient
coolant in the system
High dew point
temperature shown on
controller (E.g. >5°C)
*controller
*sensor
*bypass
*copper tubing
● Check if sensor is installed correctly (placed in the insulated tubing on
evaporator inlet) – adjust the placement of sensor if needed
● Bypass valve is not set properly – unscrew the protection cap and
tighten the nub in a clockwise fashion for 1 full turn (360°), wait if dew
point values are lowering, if not repeat process
● There could be a leakage of coolant in the system – of possible check
the pressure of the dryer on service valves
● May occur if the ambient temperature is too high
Fan on condenser does
not work
*fan
*controller
● Check the electrical wiring of the fan
● Check the output voltage for fan on the controller
● Check the working of the fan itself (connect it to an external power
supply)
Dryer does not start
*controller
*sensor
*bypass
*copper tubing
● Check the electrical installation (internal and external).
● Check if the controller is malfunctioning (E.g. is there output voltage
on the controller pins after start up time has elapsed)
● Check if there are not safety switches (high and low pressure) active
(this applies for first dryer start after it has been installed)
● If the dryer is 3 phase powered, check if the phase sequence is
correct
● There could be leakage of coolant in the system – of possible check
the pressure of the dryer on service valves
* part/category with issue
NOTE: When the condensate drain is in alarm condition, the solenoid valve will open every 7
minutes for 7.5 seconds
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