Maintenance, troubleshooting, spare parts and dismantling
ACT VS 3000 - 6000
EN - 47
Electronic Expansion
Valve EEV doesn't
work properly
Each dryer is equipped with a DRVD display (display for DRV available in the following
picture) required for DRV troubleshooting.
Connect the DRVD display to each DRV, one by one, in order to check which of the following has
caused the activation:
1. DRVD display is not powered:
-
Verify the DRV(1…n) electric wiring power supply included.
- Verify that all DRV connectors are properly tight.
-
Blow of fuse (see FU(4…n) according to dryer model) of DRV (EEV controller) power
supply - Replace it and check the proper dryer operation.
2. DRVD display is powered and shows the four vertical led on the left part blinking.
This condition means that one or more alarms are active.
Press once the upper button and display will show one or more of the following alarm code:
E24
– Temperature sensor error – Failure temperature probe BS(1…n) - see electric
diagram - check the electric cabling and/or replace the probe
.
E20
– Pressure sensor error – Failure pressure transducer BP(1…n) - see electric diagram
- check the electric cabling and/or replace the transducer.
A44
– Fault in controller – replace the DRV controller.
E1
– Fault in controller – replace the DRV controller.
A11
– Fault in controller – replace the DRV controller.
E19
– Fault in controller – replace the DRV controller.
E25
– Fault in controller – replace the DRV controller.
As soon as the problem is solved, the four led on the left of the display will be OFF (not
blinking).
Verify that the actual evaporator refrigerant super-heating (in °K) shown by the DRV is
matching with the effective super-heating of that evaporator.
NOTE!
–
Never restart the dryer with one or more DRV still in alarm (four led on the left
of the display are blinking).
Non-observance will cause damage.
3. DRVD display is powered and it is not in alarm (the four vertical led on the left part are not
powered).
This condition means that the alarm contact on the DRV(1…n) was open but currently the
DRV is not in alarm.
Press once the upper button, display shows “non” to confirm that no alarm is active.
- The rela
y KDA (1…n) is not powered - Check that all wires are properly connected and
tight, verify that proper operation of the relay or replace it.
-
Verify the DRV(1…n) electric wiring of (EEV controller).
Check that all DRV connectors are properly tight.
If the problem still persists, one or more DRV is defect
– Find which one/s is defect and
replace it/them.
1. DRVD display
