Rational CombiMaster Plus CMP User Manual

V08 en, SCC - 70 -
Diagnostic - Gas Error History - Gas Reset
Whenever the unit is showing Gas reset, always check the gas error history. Indicated gas errors can can guide you
to faster troubl shooting
Note: be aware service errors and gas errors are dierent.
Gas errors are triggered by the ignition box itself.
Service 32 and Service 33 are a result of individual gas errors during operation of the gas unit.
Gas errors can be grouped into 2 sections
A)
Likely Ignition box failure
Gas error number Action
1-15, 21, 23, 31 more than 5x: change ignition box
33, 36, 37
and additional Service 32
change ignition box
B)
The following gas errors have most likely a reason in electrode distances, ignition wire or soiled burner head
(units 2004 - 2011):
Gas error number Action
17, 18, 27, 28 for more than 5x
and additional Service 33
change only ignition box if the above components are ok.
19, 29 for more than 5x
and additional Service 33
Perform ue gas analysis, check ignition electrode distances, ignition wire and
burner. Clean Burner. If ok, change ignition box
20, 30
and additional Service 33
Check power supply 3 wire cable to gas blower for continuity (check TI 1426).
Change ignition box, if no result, re-install ignition box and change blower.
22, 32
and additional Service 33
check for gas supply and function of gas valve (22), check electrode distances,
ignition wire or soiled burner head
39, 42 for more than 5x
and additional Service 32
Check ignition electrode distances, ignition wire and burner. If ok, change igni-
tion box
34 L1 – N was changed
35
and additional Service 32
check voltage and frequency, only important when Service 32 was recorded
38
and additional Service 60
only important when Service 60 was recorded, contact Rational for soware
repair.
Aer disassembling and reassembling of the burner always perform ue gas analysis.
When changing the steam burner always use a new white burner gasket:
Index E-G: 72.00.048, Index H-I: 72.00.077
The most common gas errors are:
19(Hot air), 29(Steam) Ignition electrode distance, burner blocked from inside (units 2004-2011)
22(Hot air), 32(Steam) no ame detection aer ignition, check Gas main stop valve, Gas supply,
Gas pressure, Gas valve
When you have changed the ignition box, please always reset the Gas Error History!
Please reset the gas error history aer changing the ignition box!

Rational CombiMaster Plus CMP Specifications

General

Brand	Rational
Model	CombiMaster Plus CMP
Category	Commercial Food Equipment
Language	English