Rational Combi Master, Training Manual

Page: 169 / 200

169
Trouble shooting SCC
Edition 10-2008a
Check polarity (Gas units)
For ame monitoring mains must be connected with correct polarity
Unit shows
Check polarity
Check power connection for cor-
rect polarity, colour code:
Live = brown or black
Neutral = blue
„RESET“ indication (Gas units)
Reason:
Flame monitoring does not work after ignition
Indication „RESET“
NO
Does the connected gas
type comply with the gas type
on the name plate?
Open gas supply
Switch on ventilation system
Convert unit to connected gas
type.
Follow instruction of training
manual
Attention: Carry out ue gas
analysis
Reset was carried out several
times?
Service 33 comes up if reset was
carried out 4 times.
Service 33 can be deleted by
switching unit off and on again
(function implemented as of soft-
ware version 01_07_08)
YES
Gas supply open
External Ventilation system
on?
- Cross section of the gas
supply pipe is too small
- Flow gas pressure is too
Reset only in case all
gas appliances of the kitchen
are switched on ?
Install suf cient supply pipe,
and/or increase gas pressure
Check ignition-electrode, -cable,
-box and gas valve
YES
NO
YES
NO