Smart
Combi™
Service
Fan direction
Error description:
The fan turns at least in one mode in the wrong direction.
Troubleshooting:
Explanation:
24
Ja
Enter the service menu and select „8 fan test“ and check all four fan modes. The fan speed and the direction of rotation
appears on the display as a confirmation. The selected direction of rotation must agree with the displayed reply
(L or R).
Attention!
The front panel and the door must be closed. Otherwise the door contact switch is open.
Yes
Carry out step 8 „fan test“ in the
service area. At least one of the four
fan modes does not work correct.
Works the mode " right slow "?
Check the function of relay K3 and K5 with the help of the relay
test. (Voltage measurement at the respective outputs). If one of the
relays is broken, the „reserve relay“ function can be used.
Exchange relay pcb if necessary
Works the mode " right fast "?
Check the function of relay K3 with the help of the relay test.
(Voltage measurement at the respective outputs). If the relay is
broken, the „reserve relay“ function can be used.
Exchange relay pcb if necessary
Works the mode " left slow "?
Check the function of relay K2 and K5 with the help of the relay
test. (Voltage measurement at the respective outputs). If one of the
relays is broken, the „reserve relay“ function can be used.
Exchange relay pcb if necessary
s the mode " left fast "?
Check the function of relay K2 with the help of the relay test.
(Voltage measurement at the respective outputs). If the relay is
broken, the „reserve relay“ function can be used.
Exchange relay pcb if necessary
K2 energizes D0
K3 energizes D1
K5 energizes D2
Fast speed mode:
x.1 approx. 1450 rpm
x.2 approx. 1600 rpm
Medium speed mode:
x.1 approx. 750 rpm
x.2 approx. 1000 rpm
Slow speed mode:
x.1 approx. 450 rpm
x.2 approx. 600 rpm
Input
Fan mode
D2 D1
D0
Right slow
1
1
1
Right medium
1
1
0
Right fast
0
1
0
Left slow
1
0
0
Left medium
1
0
1
Left fast
0
0
1
1 = 230V measured against N
0 = no voltage
Yes
Yes
No
No
No
No
Summary of Contents for SmartCombi ESC-220
Page 2: ...SmartCombi Service 2 ...
Page 4: ...SmartCombi Service 4 Error messages and troubleshooting ...
Page 35: ...SmartCombi Service 35 Generally troubleshooting no error message appears ...
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