Danfoss EKC 531D1 Instructions page 9

Service
Status on DI1 input
Status on DI2 input
Read temperature at sensor "Sc3"
Read temperature at sensor "Sc4"
Status on DI3 input
Status on DI4 input
Status on DI5 input
The controller can give the following messages
Error
E1 Fault in controller
message
E2 Regulation is outside the range, or the control
signal is defective
A2 Alarm Low P0
message
A11 Refrigerant not selected
A17 High Pc
A19 DO 1 alarm. Terminal 29 is open
A20 DO 2 alarm. Terminal 30 is open
A21 DO 3 alarm. Terminal 31 is open
A22 DO 4 alarm. Terminal 32 is open
A23 DO 5 alarm. Terminal 33 is open
A24 DO 6 alarm. Terminal 34 is open
A25 DO 7 alarm. Terminal 35 is open
A26 DO 8 alarm. Terminal 36 is open
A27 Room temperature alarm (Saux1 temp.)
A28 DI 1 alarm. Terminal 46 interrupted
A29 DI 2 alarm. Terminal 47 interrupted
A30 DI 3 alarm. Terminal 49 interrupted
A31 DI 4 alarm. Terminal 50 interrupted
A32 DI 5 alarm. Terminal 52 interrupted
A34 Fan alarm. There is a signal on DI1 input
A45 Regulation stopped
S2 Status Wait for "c01"
message
S5 Wait for "c07"
S8 Wait for "c11" or "c12"
S9 Wait for "c14" or "c15"
S10 Refrigeration stopped by the internal or external
start/stop function
S25 Manual control of outputs
S34 Safety cutout. Setting A30 is exceeded or all
safety inputs (29-36) are open
Info
PS Access code is required before you have access to
the settings
EKC 531D1
u10
u37
u44
u45
u87
u88
u89
Instructions RI8HU452 © Danfoss 10/2006
Messages can be brought up on the display by briefly
pressing the uppermost key. If there is more than one alarm,
they can be scrolled through
Factory setting
If you need to return to the factory-set values, it can be done in
this way:
- Cut out the supply voltage to the controller
- Keep the upper and the lower button depressed at the same
time as you reconnect the supply voltage
°C
°C
9