Rational Combi Master, Training Manual

Page: 168 / 200

168
Trouble shooting SCC
Edition 10-2008a
No or to low steam production
Steam above 110°C is not visible, it does not condensate on the cabi-
net door!
Humid cooking mode is selected
but no/not enough steam is visible
Check:
- Pressure sensor P1;
- Hoses of pressure sensor P1;
- Thermocouple humidity control
B4
- Thermocouple quenching B2
For testing refer to training manual
Check hot air element/SSR in
diagnostic test.
Measure current draw with clamp
meter
Check solenoid valve lling Y1 for
proper function
YES
Close door, check door contact
switch
NO
Check level electrode S2 with
diagnostic program
(item 13)
indication must be „ 1 „?
Indication Service 14?
or sensor steam generator defect?
Check level electrode,
osmosis water supply (check water
quality), Check sensor steam
generator with dia-gnostic program
(655/900°C)
NO
YES
YES
Service 21: Check ap motor M3
and end switch S4
Service 28: Temperature
SG>180°C, Check scale level
Check steam heating/SSR with
diagnostic program.
Measure current with
clamp meter
Check with diagnostic program step 15
Cooking mode steam
Temp. 98 - 103°C humidity > 70%
Temp. 104 -130°C humidity > 85%
Check quenching system.
Calibrate unit as described in trai-
ning manual
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Clean lters of the water supply
NO
Door closed ?
Is the water tap symbol
ashing on the display?
Is water tap open?
Is hand shower working?
Has steam production
failed completely
Press function, service
and nally mod key.
Emergency humidity control
active
Indication Service 21
or Service 28
Steam heating elements
ok?
Humidity value ok?