Smart
Combi™
Service
Finally all fan modes should be test with the „fan test“!
Explanation:
19
Carry out step 8 „fan test“ in the
service area. The fan speed and the
direction of rotation appears on the
display as a confirmation. The fan is
running, but there is no confirmation
(0 rpm) on the display.
Attention!
The front panel and the
door must be closed. Otherwise the
door contact switch is open.
Yes
Check supply and plug X9 on the keyboard pcb.
The hall sensor in the fan has broken. Replace fan..
The keyboard pcb has broken. Exchange part.
Yes
Yes
Carry out the fan test. At least one
of the four fan modes does not work.
No
Works the mode " right slow "?
No
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.
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.
No
Works the mode " right fast "?
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
No
Works the mode " left slow "?
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
No
Works the mode " left fast "?
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
Yes
Yes
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 ...
Page 41: ...SmartCombi Service 41 ...
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